| Cover Page - USD ($) $ in Thousands | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2024 | Feb. 18, 2025 | Jun. 28, 2024 | |
| Document Type | 10-K | ||
| Document Annual Report | true | ||
| Document Period End Date | Dec. 31, 2024 | ||
| Current Fiscal Year End Date | --12-31 | ||
| Document Transition Report | false | ||
| Entity File Number | 001-33519 | ||
| Entity Registrant Name | PUBLIC STORAGE | ||
| Entity Incorporation, State or Country Code | MD | ||
| Entity Tax Identification Number | 93-2834996 | ||
| Entity Address, Address Line One | 701 Western Avenue | ||
| Entity Address, City or Town | Glendale | ||
| Entity Address, State or Province | CA | ||
| Entity Address, Postal Zip Code | 91201-2349 | ||
| City Area Code | 818 | ||
| Local Phone Number | 244-8080 | ||
| Entity Well-known Seasoned Issuer | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Interactive Data Current | Yes | ||
| Entity Filer Category | Large Accelerated Filer | ||
| Entity Small Business | false | ||
| Entity Emerging Growth Company | false | ||
| ICFR Auditor Attestation Flag | true | ||
| Document Financial Statement Error Correction [Flag] | false | ||
| Entity Shell Company | false | ||
| Entity Public Float | $ 43,242,396 | ||
| Entity Common Stock, Shares Outstanding | 175,415,530 | ||
| Documents Incorporated by Reference | Portions of the definitive proxy statement to be filed in connection with the Annual Meeting of Shareholders to be held in 2025 are incorporated by reference into Part III of this Annual Report on Form 10-K to the extent described therein. | ||
| Amendment Flag | false | ||
| Document Fiscal Year Focus | 2024 | ||
| Document Fiscal Period Focus | FY | ||
| Entity Central Index Key | 0001393311 | ||
| Common Shares | |||
| Title of 12(b) Security | Common Shares, $0.10 par value | ||
| Trading Symbol | PSA | ||
| Security Exchange Name | NYSE | ||
| Series F Preferred Stock | |||
| Title of 12(b) Security | Depositary Shares Each Representing 1/1,000 of a 5.150% Cum Pref Share, Series F, $0.01 par value | ||
| Trading Symbol | PSAPrF | ||
| Security Exchange Name | NYSE | ||
| Series G Preferred Stock | |||
| Title of 12(b) Security | Depositary Shares Each Representing 1/1,000 of a 5.050% Cum Pref Share, Series G, $0.01 par value | ||
| Trading Symbol | PSAPrG | ||
| Security Exchange Name | NYSE | ||
| Series H Preferred Stock | |||
| Title of 12(b) Security | Depositary Shares Each Representing 1/1,000 of a 5.600% Cum Pref Share, Series H, $0.01 par value | ||
| Trading Symbol | PSAPrH | ||
| Security Exchange Name | NYSE | ||
| Series I Preferred Stock | |||
| Title of 12(b) Security | Depositary Shares Each Representing 1/1,000 of a 4.875% Cum Pref Share, Series I, $0.01 par value | ||
| Trading Symbol | PSAPrI | ||
| Security Exchange Name | NYSE | ||
| Series J Preferred Stock | |||
| Title of 12(b) Security | Depositary Shares Each Representing 1/1,000 of a 4.700% Cum Pref Share, Series J, $0.01 par value | ||
| Trading Symbol | PSAPrJ | ||
| Security Exchange Name | NYSE | ||
| Series K Preferred Stock | |||
| Title of 12(b) Security | Depositary Shares Each Representing 1/1,000 of a 4.750% Cum Pref Share, Series K, $0.01 par value | ||
| Trading Symbol | PSAPrK | ||
| Security Exchange Name | NYSE | ||
| Series L Preferred Stock | |||
| Title of 12(b) Security | Depositary Shares Each Representing 1/1,000 of a 4.625% Cum Pref Share, Series L, $0.01 par value | ||
| Trading Symbol | PSAPrL | ||
| Security Exchange Name | NYSE | ||
| Series M Preferred Stock | |||
| Title of 12(b) Security | Depositary Shares Each Representing 1/1,000 of a 4.125% Cum Pref Share, Series M, $0.01 par value | ||
| Trading Symbol | PSAPrM | ||
| Security Exchange Name | NYSE | ||
| Series N Preferred Stock | |||
| Title of 12(b) Security | Depositary Shares Each Representing 1/1,000 of a 3.875% Cum Pref Share, Series N, $0.01 par value | ||
| Trading Symbol | PSAPrN | ||
| Security Exchange Name | NYSE | ||
| Series O Preferred Stock | |||
| Title of 12(b) Security | Depositary Shares Each Representing 1/1,000 of a 3.900% Cum Pref Share, Series O, $0.01 par value | ||
| Trading Symbol | PSAPrO | ||
| Security Exchange Name | NYSE | ||
| Series P Preferred Stock | |||
| Title of 12(b) Security | Depositary Shares Each Representing 1/1,000 of a 4.000% Cum Pref Share, Series P, $0.01 par value | ||
| Trading Symbol | PSAPrP | ||
| Security Exchange Name | NYSE | ||
| Series Q Preferred Stock | |||
| Title of 12(b) Security | Depositary Shares Each Representing 1/1,000 of a 3.950% Cum Pref Share, Series Q, $0.01 par value | ||
| Trading Symbol | PSAPrQ | ||
| Security Exchange Name | NYSE | ||
| Series R Preferred Stock | |||
| Title of 12(b) Security | Depositary Shares Each Representing 1/1,000 of a 4.000% Cum Pref Share, Series R, $0.01 par value | ||
| Trading Symbol | PSAPrR | ||
| Security Exchange Name | NYSE | ||
| Series S Preferred Stock | |||
| Title of 12(b) Security | Depositary Shares Each Representing 1/1,000 of a 4.100% Cum Pref Share, Series S, $0.01 par value | ||
| Trading Symbol | PSAPrS | ||
| Security Exchange Name | NYSE | ||
| Notes Due 2032 | |||
| Title of 12(b) Security | Guarantee of 0.875% Senior Notes due 2032 issued by Public Storage Operating Company | ||
| Trading Symbol | PSA/32 | ||
| Security Exchange Name | NYSE | ||
| Notes Due 2030 | |||
| Title of 12(b) Security | Guarantee of 0.500% Senior Notes due 2030 issued by Public Storage Operating Company | ||
| Trading Symbol | PSA/30 | ||
| Security Exchange Name | NYSE | 
| Audit Information | 12 Months Ended | 
|---|---|
| Dec. 31, 2024 | |
| Audit Information [Abstract] | |
| Auditor Firm ID | 42 | 
| Auditor Name | Ernst & Young LLP | 
| Auditor Location | Los Angeles, California | 
| CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares | Dec. 31, 2024 | Dec. 31, 2023 | 
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Preferred stock, par value (in USD per share) | $ 0.01 | $ 0.01 | 
| Preferred stock, shares authorized (in shares) | 100,000,000 | 100,000,000 | 
| Preferred stock, shares issued (in shares) | 174,000 | 174,000 | 
| Preferred stock, shares outstanding (in shares) | 174,000 | 174,000 | 
| Common stock, par value (in USD per share) | $ 0.10 | $ 0.10 | 
| Common stock, shares authorized (in shares) | 650,000,000 | 650,000,000 | 
| Common stock, shares issued (in shares) | 175,408,393 | 175,670,727 | 
| CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | |
| Statement of Comprehensive Income [Abstract] | |||
| Net income | $ 2,084,410 | $ 2,160,120 | $ 4,366,274 | 
| Foreign currency translation (loss) gain on investment in Shurgard | (4,739) | 13,078 | (26,730) | 
| Total comprehensive income | 2,079,671 | 2,173,198 | 4,339,544 | 
| Allocation to noncontrolling interests | (12,386) | (11,793) | (17,127) | 
| Comprehensive income allocable to Public Storage shareholders | $ 2,067,285 | $ 2,161,405 | $ 4,322,417 | 
| CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) | 12 Months Ended | 
|---|---|
| Dec. 31, 2022  $ / shares  shares | |
| Issuance of common shares in connection with share-based compensation (in shares) | 283,190 | 
| Distributions to common shareholders and restricted share unitholders (in USD per share) | $ / shares | $ 21.15 | 
| Issuance of commons shares for cash (in shares) | 0 | 
| Employee stock-based compensation and exercise of stock options (in shares) | 283,190 | 
| Cumulative Preferred Shares | |
| Issuance of preferred shares (in shares) | 10,000 | 
| Common Shares | |
| Issuance of common shares in connection with share-based compensation (in shares) | 283,190 | 
| Retirement of common shares (in shares) | 151,977 | 
| Employee stock-based compensation and exercise of stock options (in shares) | 283,190 | 
| Description of the Business | 12 Months Ended | 
|---|---|
| Dec. 31, 2024 | |
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
| Description of the Business | 1.   Description of the Business Public Storage is a Maryland real estate investment trust (“REIT”) engaged in the ownership and operation of self-storage facilities that offer storage spaces for lease, generally on a month-to-month basis, for personal and business use, ancillary activities such as tenant reinsurance, merchandise sales, and third party management, as well as the acquisition and development of additional self-storage space.  Effective August 14, 2023, we are structured as an umbrella partnership REIT, or UPREIT, under which substantially all of our business is conducted through Public Storage OP, L.P. (“PSA OP”), an operating partnership, and its subsidiaries, including Public Storage Operating Company (“PSOC”). The primary assets of the parent entity, Public Storage, are general partner and limited partner interests in PSA OP, which holds all of the Company’s assets through its ownership of all of the equity interests in PSOC. As of December 31, 2024, Public Storage owned all of the general partner interests and approximately 99.87% of the limited partnership interests of PSA OP, with the remaining 0.13% of limited partnership interests owned by certain trustees and officers of the Company. Unless stated otherwise or the context otherwise requires, references to “Public Storage” mean the parent entity, Public Storage, and references to “the Company,” “we,” “us,” and “our” mean collectively Public Storage, PSA OP, PSOC, and those entities/subsidiaries owned or controlled by Public Storage, PSA OP, and PSOC. At December 31, 2024, we owned interests in 3,073 self-storage facilities (with approximately 221.3 million net rentable square feet) located in 40 states in the United States (“U.S.”) operating under the Public Storage® name, and 1.0 million net rentable square feet of commercial and retail space. In addition, we managed 307 facilities (with approximately 23.3 million net rentable square feet) for third parties at December 31, 2024. At December 31, 2024, we owned an approximate 35% common equity interest in Shurgard Self Storage Limited (“Shurgard”), a public company traded on the Euronext Brussels under the “SHUR” symbol, which owned 318 self-storage facilities (with approximately 17 million net rentable square feet) located in seven Western European countries, all operating under the Shurgard® name. | 
| Basis of Presentation and Summary of Significant Accounting Policies | 12 Months Ended | 
|---|---|
| Dec. 31, 2024 | |
| Accounting Policies [Abstract] | |
| Basis of Presentation and Summary of Significant Accounting Policies | 2.   Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation We have prepared the accompanying consolidated financial statements in accordance with U.S. generally accepted accounting principles (“GAAP”) as set forth in the Accounting Standards Codification of the Financial Accounting Standards Board, and in conformity with the rules and regulations of the Securities and Exchange Commission (“SEC”). Disclosures of the number and square footage of facilities, as well as the number and coverage of tenant reinsurance policies (Note 14) are unaudited and outside the scope of our independent registered public accounting firm’s audit of our financial statements in accordance with the standards of the Public Company Accounting Oversight Board (U.S.). Summary of Significant Accounting Policies Consolidation and Equity Method of Accounting We consider entities to be Variable Interest Entities (“VIEs”) when they have insufficient equity to finance their activities without additional subordinated financial support provided by other parties, or the equity holders as a group do not have a controlling financial interest. In addition, we have general partner interests in limited partnerships along with third-party investors to develop, construct or operate self-storage facilities. As the general partner, we consider the limited partnerships to be VIEs if the limited partners lack both substantive participating rights and substantive kick-out rights. We consolidate VIEs when we have (i) the power to direct the activities most significantly impacting economic performance, and (ii) either the obligation to absorb losses or the right to receive benefits from the VIE. PSA OP met the definition of a VIE and is consolidated by the Company as the primary beneficiary of PSA OP. All of the assets and liabilities of the Company are held by PSA OP. The total assets, primarily real estate assets, and the total liabilities of our other consolidated VIEs are not material as of December 31, 2024. We consolidate all other entities when we control them through voting shares or contractual rights. We refer to the entities we consolidate, for the period in which the reference applies, collectively as the “Subsidiaries,” and we eliminate intercompany transactions and balances.  We account for our investments in entities that we do not consolidate but over which we have significant influence using the equity method of accounting. We refer to these entities, for the periods in which the reference applies, collectively as the “Unconsolidated Real Estate Entities,” and we eliminate intra-entity profits and losses and amortize any differences between the cost of our investment and the underlying equity in net assets against equity in earnings as if the Unconsolidated Real Estate Entity were a consolidated subsidiary.  Equity in earnings of unconsolidated real estate entities presented on our income statements represents our pro-rata share of the earnings of the Unconsolidated Real Estate Entities. The dividends we receive from the Unconsolidated Real Estate Entities are reflected on our consolidated statements of cash flows as “distributions from cumulative equity in earnings of unconsolidated real estate entities” to the extent of our cumulative equity in earnings, with any excess classified as “distributions in excess of cumulative equity in earnings from unconsolidated real estate entities.”  Use of Estimates The preparation of consolidated financial statements and accompanying notes in conformity with GAAP requires us to make estimates and assumptions that affect the amounts reported. Actual results could differ from those estimates and assumptions. Cash Equivalents Cash equivalents represent highly liquid financial instruments that mature within three months of acquisition such as money market funds with a rating of at least AAA by Standard & Poor’s, commercial paper that is rated A1 by Standard & Poor’s or deposits with highly rated commercial banks. Fair Value As used herein, the term “fair value” is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. In the absence of active markets for identical assets or liabilities, such measurements involve developing assumptions based on market observable data and, in the absence of such data, internal information that is consistent with what market participants would use in a hypothetical transaction that occurs at the balance sheet date.  Assets and liabilities recorded at fair value are measured and classified in accordance with a three-tier fair value hierarchy based on the observability of the inputs available in the market used to measure fair value: Level 1 Quoted prices in active markets for identical assets or liabilities at the measurement date.  Level 2 Significant observable inputs other than Level 1, that are observable for the asset or liability, either directly or indirectly through corroboration with observable market data.  Level 3 Unobservable inputs that are supported by little or no market data for the related assets or liabilities.  The categorization of a financial instrument within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Our financial instruments consist of cash and cash equivalents, notes receivable, other assets, other liabilities, and notes payable. Cash equivalents, notes receivable, other assets and other liabilities are stated at book value, which approximates fair value as of the balance sheet date due to the short time period to maturity.  We estimate and disclose the fair value of our notes payable using Level 2 inputs by discounting the related future cash flows at a rate based upon quoted interest rates for securities that have similar characteristics such as credit quality and time to maturity. We use significant judgment to estimate fair values of real estate facilities, goodwill, and other intangible assets for the purposes of purchase price allocation or impairment analysis. In estimating their values, we consider Level 3 inputs such as market prices of land, market capitalization rates, expected returns, earnings multiples, projected levels of earnings, costs of construction, and functional depreciation.  Real Estate Facilities We record real estate facilities at cost. We capitalize all costs incurred to acquire, develop, construct, renovate and improve facilities as part of major repair and maintenance programs, including interest and property taxes incurred during the construction period. We expense the costs of demolition of existing facilities associated with a renovation as incurred. We allocate the net acquisition cost of acquired real estate facilities to the underlying land, buildings, and identified intangible assets based upon their respective individual estimated fair values.  We expense costs associated with dispositions of real estate, as well as routine repairs and maintenance costs, as incurred. We depreciate buildings and improvements on a straight-line basis over estimated useful lives ranging generally between 5 to 40 years. When we sell a full or partial interest in a real estate facility without retaining a controlling interest following sale, we recognize a gain or loss on sale as if 100% of the property was sold at fair value. If we retain a controlling interest following the sale, we record a noncontrolling interest for the book value of the partial interest sold, and recognize additional paid-in capital for the difference between the consideration received and the partial interest at book value. Goodwill and Other Intangible Assets Intangible assets consist of goodwill, the Shurgard® trade name, which Shurgard uses pursuant to a fee-based licensing agreement, and finite-lived assets. Goodwill and the Shurgard® trade name have indefinite lives and are not amortized. Our finite-lived assets consist primarily of (i) acquired customers in place amortized relative to the benefit of the customers in place, with such amortization reflected as depreciation and amortization expense on our income statement, (ii) property tax abatements acquired and amortized relative to the reduction in property tax paid, with such amortization reflected as self-storage cost of operations on our income statement and (iii) acquired non real estate-related contracts, with such amortization reflected as depreciation and amortization expense on our income statement. Notes Receivable We account for notes receivable from bridge loans we originate to third-party self-storage owners at amortized cost. The bridge loans, collateralized by operating self-storage properties, typically have a term of three years or four years with two one-year extensions, and have variable interest rates. We recognize interest income and other fee income related to the bridge loans using the effective interest method, with deferred fees and costs amortized over the lives of the related loans as yield adjustment. We recognize an allowance for expected credit losses for outstanding notes receivable and unfunded loan commitments. At December 31, 2024, we had a notes receivable balance of $10.0 million included in other assets and an unfunded loan commitment of $12.5 million expected to close in 2025 subject to the satisfaction of certain conditions. As of December 31, 2024, none of the notes receivable were in past-due or nonaccrual status and the allowance for expected credit losses was immaterial. Evaluation of Asset Impairment We evaluate our real estate and finite-lived intangible assets for impairment each quarter. If there are indicators of impairment and we determine that the asset is not recoverable from future undiscounted cash flows to be received through the asset’s remaining life (or, if earlier, the expected disposal date), we record an impairment charge to the extent the carrying amount exceeds the asset’s estimated fair value or net proceeds from expected disposal.  We evaluate our investment in unconsolidated real estate entity for impairment quarterly. We record an impairment charge to the extent the carrying amount exceeds estimated fair value, when we believe any such shortfall is other than temporary.  We evaluate goodwill for impairment annually and whenever relevant events, circumstances, and other related factors indicate that it is more likely than not that the fair value of the related reporting unit is less than the carrying amount. When we conclude that it is not more likely than not that the fair value of the reporting unit is less than the aggregate carrying amount, no impairment charge is recorded and no further analysis is performed. Otherwise, we record an impairment charge to the extent the carrying amount of the goodwill exceeds the amount that would be allocated to goodwill if the reporting unit were acquired for estimated fair value.  We evaluate other indefinite-lived intangible assets, such as the Shurgard® trade name for impairment at least annually and whenever relevant events, circumstances and other related factors indicate that it is more likely than not that the asset is impaired. When we conclude that it is not more likely than not that the asset is impaired, we do not record an impairment charge and no further analysis is performed. Otherwise, we record an impairment charge to the extent the carrying amount exceeds the asset’s estimated fair value.  No impairments were recorded in any of our evaluations for all periods presented herein. Revenue and Expense Recognition We recognize revenues from self-storage facilities, which primarily comprise rental income earned pursuant to month-to-month leases, as well as associated late charges and administrative fees, as earned. Promotional discounts reduce rental income over the promotional period, which is generally one month. We recognize ancillary revenues when earned.  We accrue for property tax expense based upon actual amounts billed and, in some circumstances, estimates when bills or assessments have not been received from the taxing authorities. If these estimates are incorrect, the timing and amount of expense recognition could be incorrect. We expense cost of operations (including advertising expenditures), general and administrative expense, and interest expense as incurred.  Foreign Currency Exchange Translation The local currency (the Euro) is the functional currency for our equity interests in Shurgard. The related balance sheet amounts are translated into U.S. Dollars at the exchange rates at the respective financial statement date, while amounts on our consolidated statements of income are translated at the average exchange rates during the respective period. Cumulative translation adjustments, are included in equity as a component of accumulated other comprehensive income (loss). When financial instruments denominated in a currency other than the U.S. Dollar are expected to be settled in cash in the foreseeable future, the impact of changes in the U.S. Dollar equivalent are reflected in current earnings. At December 31, 2024, due primarily to our investment in Shurgard (Note 4) and our notes payable denominated in Euros (Note 7), our operating results and financial position are affected by fluctuations in currency exchange rates between the Euro, against the U.S. Dollar. The Euro was translated at exchange rates of approximately 1.039 U.S. Dollars per Euro at December 31, 2024 (1.104 at December 31, 2023), and average exchange rates of 1.082, 1.081 and 1.054 for the years ended December 31, 2024, 2023, and 2022, respectively.  Income Taxes We and a subsidiary of PSOC have elected to be treated as a REIT, as defined in the Internal Revenue Code of 1986, as amended (the “Code”). For each taxable year in which we qualify for taxation as a REIT, we will not be subject to U.S. federal corporate income tax on our “REIT taxable income” (generally, taxable income subject to specified adjustments, including a deduction for dividends paid and excluding our net capital gain) that is distributed to our shareholders. We believe we have met these REIT requirements for all periods presented herein. Accordingly, we have recorded no U.S. federal corporate income tax expense related to our REIT taxable income.  We have elected taxable REIT subsidiary (“TRS”) status for some of our consolidated subsidiaries. Our tenant reinsurance, merchandise, third party management operations and our equity investment in Shurgard are conducted under these TRSs and are subject to federal corporate income tax. For these entities, deferred tax assets and liabilities for temporary differences are recognized based on the future tax consequences attributable to differences that exist between the financial statement carrying amounts of assets and liabilities and their respective tax bases, as well as tax attributes such as operating loss, capital loss and tax credits carryforwards on a taxing jurisdiction basis. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are established when necessary to reduce deferred tax assets to the amounts that are expected more likely than not to be realized in the future.   We recognize tax benefits of uncertain income tax positions only if we believe it is more likely than not that the position would ultimately be sustained assuming the relevant taxing authorities had full knowledge of the relevant facts and circumstances of our positions. As of December 31, 2024, we had no uncertain tax positions. We also incur income taxes in certain state and local jurisdictions, which are included in income tax expense in the Consolidated Statements of Income. Share-Based Compensation Under various share-based compensation plans and under terms established or modified by our Board or a committee thereof, we grant awards to trustees, officers, and key employees, including non-qualified options to purchase the Company’s common shares, restricted share units (“RSUs”), deferred share units (“DSUs”), and unrestricted common shares issued in lieu of trustee compensation.  In February 2024, we amended our 2021 Equity and Performance-Based Incentive Plan to further provide for the grant of awards to certain officers and trustees of the Company in the form of LTIP units and appreciation-only LTIP units (“AO LTIP units”) of PSA OP. LTIP units are structured as “profit interests” for U.S. federal income tax purposes. We estimate the fair value of share-based payment awards on the date of grant. We determine the fair value of RSUs, DSUs, and LTIP units with no market conditions based on the closing market price of the Company’s common shares on the date of grant. We value stock options and AO LTIP units with no market conditions at the grant date using the Black-Scholes option-pricing model. We value awards with market conditions at the grant date using a Monte-Carlo valuation simulation. Our determination of the fair value of share-based payment awards on the date of grant using an option-pricing model or Monte-Carlo valuation simulation is affected by our stock price as well as assumptions regarding a number of subjective and complex variables. These variables include, but are not limited to, our expected stock price volatility over the expected term of the awards. For stock options and AO LTIP units, variables also include actual and projected stock option exercise and AO LTIP unit conversion behaviors. For awards with performance conditions, we adjust compensation cost each quarter as needed for any changes in the assessment of the probability that the specified performance criteria will be achieved. We amortize the grant-date fair value of awards as compensation expense over the service period, which begins on the grant date and ends on the expected vesting date. For awards that are earned solely upon the passage of time and continued service, the entire cost of the award is amortized on a straight-line basis over the service period. For awards with market and/or performance conditions, the individual cost of each vesting is amortized separately over each individual service period (the “accelerated attribution” method). For awards with performance conditions, the estimated number of stock awards that will ultimately vest requires judgment, and to the extent actual results or updated estimates differ from our current estimates, such amounts will be recorded as a cumulative adjustment in the period estimates are revised.  In amortizing share-based compensation expense, we do not estimate future forfeitures. Instead, we reverse previously amortized share-based compensation expense with respect to grants that are forfeited in the period the employee terminates employment. Our share-based compensation plans allow immediate vesting of outstanding unvested awards upon retirement (“Retirement Acceleration”) for employees who meet certain conditions. We accelerate amortization of compensation expense for each grant by changing the end of the service period from the original vesting date to the date an employee is expected to be eligible for Retirement Acceleration, if earlier. Recent Accounting Pronouncements Not Yet Adopted In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, to enhance the transparency and decision-usefulness of income tax disclosures, particularly in the rate reconciliation table and disclosures about income taxes paid. The ASU’s amendments are effective for annual periods beginning after December 15, 2024 on a prospective basis. Early adoption is permitted. We are currently evaluating the impact of this ASU on our Consolidated Financial Statements and related disclosures. In November 2024, the FASB issued ASU 2024-03,  Income Statement — Reporting Comprehensive Income — Expense Disaggregation Disclosures (Subtopic 220-40) that requires the disclosure of additional information related to certain costs and expenses, including amounts of inventory purchases, employee compensation, and depreciation and amortization included in each income statement line item. The guidance also requires disclosure of the total amount of selling expenses and the entity’s definition selling expenses. The guidance is effective for annual periods beginning after December 15, 2026 and interim periods within fiscal years beginning after December 15, 2027. The guidance may be applied prospectively or retrospectively. Early adoption is permitted. We are currently evaluating the impact of this ASU on our Consolidated Financial Statements and related disclosures. | 
| Real Estate Facilities | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Dec. 31, 2024 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Real Estate [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Real Estate Facilities | 3.    Real Estate Facilities Activity in real estate facilities during 2024, 2023, and 2022 is as follows: 
 During 2024, we acquired 22 self-storage facilities (1.7 million net rentable square feet of storage space), for a total cost of $267.5 million in cash. Approximately $12.5 million of the total cost was allocated to intangible assets. We completed development and redevelopment activities costing $343.4 million, adding 1.5 million net rentable square feet of self-storage space. Construction in process at December 31, 2024 consisted of projects to develop new self-storage facilities and expand existing self-storage facilities. During 2023, we acquired all the membership interests of BREIT Simply Storage LLC, a self-storage company that owns and operates 127 self-storage facilities (9.4 million net rentable square feet) and manages 25 self-storage facilities for third parties, for a purchase price of $2.2 billion in cash (the “Simply Acquisition”). Approximately $2.0 billion of the total costs was allocated to real estate facilities and $214.3 million was allocated to intangible assets. During 2023, in addition to the Simply Acquisition, we acquired 37 self-storage facilities (2.7 million net rentable square feet of storage space), for a total cost of $473.2 million in cash. Approximately $23.2 million of the total cost was allocated to intangible assets. We completed development and redevelopment activities costing $362.9 million during 2023, adding 1.7 million net rentable square feet of self-storage space. Construction in process at December 31, 2023 consisted of projects to develop new self-storage facilities and expand existing self-storage facilities. During 2023, we wrote off $11.7 million of accumulated development costs for cancelled development and redevelopment projects in construction in process as real estate acquisition and development expense. We also transferred $12.7 million of land cost related to cancelled development projects to other assets at December 31, 2023. During 2023, we completed a real estate transaction with a third-party, through which we sold an operating self-storage facility with a net book value of $7.1 million for gross proceeds of $40.0 million and acquired a nearby land parcel for $13.5 million. At the close of the transaction, we entered into a leaseback of the self-storage facility until we complete development of the acquired land into a self-storage facility, no later than December 31, 2026. Of the $40.0 million in gross proceeds, $24.3 million was allocated to the sale of the property based on its estimated fair value, resulting a net gain on sale of real estate of $17.1 million after direct transaction costs, and $15.7 million was classified as a reduction of costs to develop the acquired land included in construction in process. During 2023, we also sold a land parcel for $0.1 million in cash and recorded a related gain on sale of real estate of $0.1 million. During 2022, we acquired 74 self-storage facilities (4.7 million net rentable square feet of storage space), for a total cost of $730.5 million, consisting of $710.6 million in cash and $19.9 million in partnership units in one of our subsidiaries. Approximately $24.1 million of the total cost was allocated to intangible assets. We completed development and redevelopment activities costing $227.2 million during 2022, adding 1.4 million net rentable square feet of self-storage space. Construction in process at December 31, 2022 consisted of projects to develop new self-storage facilities and expand existing self-storage facilities. During 2022, we wrote off $7.0 million of accumulated development costs for cancelled development and redevelopment projects in construction in process as real estate acquisition and development expense. We also transferred $2.2 million of land cost related to a cancelled development project to other assets at December 31, 2022. Additionally, on July 8, 2022, we acquired from PS Business Parks, Inc. (“PSB”) the commercial interests in five properties at three sites jointly occupied with certain of our self-storage facilities located in Maryland and Virginia, for $47.3 million. We recognized $27.0 million of real estate assets and $0.7 million of intangibles for the properties acquired, representing the cost of these commercial properties that we did not have interest in through our equity investment in PSB. We recognized the remaining $19.6 million as an increase to our basis in our equity investment in PSB, which represents the elimination of our portion of the gain recorded by PSB. During 2022, we sold portions of real estate facilities in connection with eminent domain proceedings for $1.5 million in cash proceeds and recorded a related gain on sale of real estate of approximately $1.5 million. At December 31, 2024, the adjusted basis of real estate facilities for U.S. federal tax purposes was approximately $18.6 billion (unaudited). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Investment in Unconsolidated Real Estate Entities | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Dec. 31, 2024 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity Method Investments and Joint Ventures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Investment in Unconsolidated Real Estate Entities | 4.    Investment in Unconsolidated Real Estate Entities The following table sets forth our equity in earnings of the Unconsolidated Real Estate Entities (amounts in thousands): 
 Investment in Shurgard Throughout all periods presented, we had an approximately 35% equity interest in Shurgard. On November 14, 2023, Shurgard issued 8,163,265 new common shares to institutional investors. We participated on a pro-rata basis in the offering and acquired 2,863,674 common shares for a cost of $112.6 million. On September 26, 2024, Shurgard issued 1,114,194 new common shares to its shareholders who opted to exchange the cash dividend rights declared on August 13, 2024 for additional shares. We received 487,600 new common shares in exchange for all of our dividend rights. At December 31, 2024, we effectively owned 34,619,733 common shares of Shurgard. Based upon the closing price at December 31, 2024 (€35.85 per share of Shurgard common stock, at 1.039 exchange rate of U.S. Dollars to the Euro), the shares we owned had a market value of approximately $1.3 billion.  Our equity in earnings of Shurgard comprise our equity share of Shurgard’s net income, less amortization of the Shurgard Basis Differential (defined below). During 2024, 2023, and 2022, we received $4.3 million, $3.8 million, and $3.5 million of trademark license fees that Shurgard pays to us for the use of the Shurgard® trademark, respectively. We eliminated $1.5 million, $1.3 million, and $1.2 million of intra-entity profits and losses for 2024, 2023, and 2022, respectively, representing our equity share of the trademark license fees. We classify the remaining license fees we receive from Shurgard as interest and other income on our Consolidated Statements of Income. During 2024, 2023, and 2022, we received cash dividend distributions from Shurgard totaling $22.8 million, $39.0 million, and $37.8 million, respectively. Approximately $13.3 million, $11.0 million, and $13.7 million of total cash distributions from Shurgard during the year ended 2024, 2023, and 2022, respectively, represented distributions in excess of cumulative equity in earnings from Shurgard, which was classified within cash flows from investing activities in the Consolidated Statements of Cash Flows. At December 31, 2024, our investment in Shurgard’s real estate assets exceeded our pro-rata share of the underlying amounts on Shurgard’s balance sheet by $62.6 million ($63.7 million at December 31, 2023). This differential (the “Shurgard Basis Differential”) includes our basis adjustments in Shurgard’s real estate assets net of related deferred income taxes. The Shurgard Basis Differential increased by $3.4 million during 2024, due to an increase of our ownership interest in Shurgard from the exchange of our cash dividend rights for additional common shares of Shurgard. The Shurgard Basis Differential is being amortized as a reduction to equity in earnings of the Unconsolidated Real Estate Entities. Such amortization totaled approximately $4.5 million, $4.1 million, and $6.9 million during 2024, 2023, and 2022, respectively. As of December 31, 2024, 2023, and 2022, we translated the book value of our investment in Shurgard from Euro to U.S. Dollars and recorded $4.7 million other comprehensive loss, $13.1 million other comprehensive income, and $26.7 million other comprehensive loss, respectively. Investment in PSB On July 20, 2022, in connection with the closing of the merger of PS Business Parks, Inc. (“PSB”) with affiliates of Blackstone Real Estate (“Blackstone”), we completed the sale of our 41% common equity interest in PSB in its entirety. At the close of the merger transaction, we received a total of $2.7 billion of cash proceeds and recognized a gain of $2.1 billion during the third quarter of 2022. During 2022, we received cash distributions from PSB totaling $109.5 million, which were classified within cash flows from operating activities in the Consolidated Statements of Cash flows. Since the sale of PSB in July 2022, we no longer recognize equity in earnings or receive cash distributions from PSB. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Goodwill and Other Intangible Assets | 12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Goodwill and Intangible Assets Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Goodwill and Other Intangible Assets | 5.   Goodwill and Other Intangible Assets Goodwill and other intangible assets consisted of the following (amounts in thousands): 
 Finite-lived intangible assets consist primarily of acquired customers in place. Amortization expense related to intangible assets subject to amortization was $117.6 million, $82.7 million and $95.2 million in 2024, 2023, and 2022, respectively. During 2024, 2023, and 2022, intangibles increased $12.5 million, $237.5 million, and $24.8 million, respectively, in connection with the acquisition of real estate facilities and Simply Acquisition (Note 3). The remaining amortization expense will be recognized over a weighted average life of approximately 1.2 years. The estimated future amortization expense for our finite-lived intangible assets at December 31, 2024 is as follows (amounts in thousands): 
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| Credit Facility | 12 Months Ended | 
|---|---|
| Dec. 31, 2024 | |
| Line of Credit Facility [Abstract] | |
| Credit Facility | 6.    Credit Facility On June 12, 2023, PSOC entered into an amended revolving credit agreement (the “Credit Facility”), which increased our borrowing limit from $500 million to $1.5 billion and extended the maturity date from April 19, 2024 to June 12, 2027. We have the option to further extend the maturity date by up to one additional year with additional extension fees up to 0.125% of the extended commitment amount. Amounts drawn on the Credit Facility bear annual interest at rates ranging from  plus 0.65% to SOFR plus 1.40% depending upon our credit rating (SOFR plus 0.70% at December 31, 2024). We are also required to pay a quarterly facility fee ranging from 0.10% per annum to 0.30% per annum depending upon our credit rating (0.10% per annum at December 31, 2024). At December 31, 2024 and February 24, 2025, we had no outstanding borrowings under this Credit Facility. We had undrawn standby letters of credit, which reduce our borrowing capacity, totaling $19.4 million at December 31, 2024 and $19.6 million at February 24, 2025 ($14.6 million at December 31, 2023). The Credit Facility has various customary restrictive covenants with which we were in compliance at December 31, 2024.  Public Storage has provided a full and unconditional guarantee of PSOC’s obligations under the Credit Facility. | 
| Notes Payable | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Dec. 31, 2024 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Payable [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Payable | 7.    Notes Payable Our notes payable (all of which were issued by PSOC), are reflected net of issuance costs (including original issue discounts), which are amortized as interest expense on the effective interest method over the term of each respective note. Our notes payable at December 31, 2024 and December 31, 2023 are set forth in the tables below: 
 Public Storage has provided a full and unconditional guarantee of PSOC’s obligations under each series of unsecured notes. U.S. Dollar Denominated Unsecured Notes On April 16, 2024, PSOC completed a public offering of $1.0 billion aggregate principal amount of senior notes, including $700 million aggregate principal amount of floating rate senior notes bearing interest at a rate of Compounded  + 0.70% (reset quarterly) maturing on April 16, 2027 and $300 million aggregate principal amount of senior notes bearing interest at a fixed annual rate of 5.350% maturing on August 1, 2053. The 2053 notes issued at a discount of $5.3 million constitute a further issuance of, and form a single series with, PSOC’s outstanding 5.350% senior notes due 2053 issued on July 26, 2023 in the aggregate principal amount of $600 million. Interest on the floating rate senior notes is payable quarterly, commencing on July 16, 2024. Interest on the 2053 notes is payable semi-annually, commencing on August 1, 2024. In connection with the offering, we received $988.5 million in net proceeds. On April 23, 2024, we repaid PSOC’s outstanding $700 million aggregate principal amount of floating rate senior notes bearing interest at a rate of Compounded  + 0.47% at maturity. On July 26, 2023, PSOC completed a public offering of $400 million, $500 million, $700 million, and $600 million aggregate principal amount of unsecured senior notes bearing interest at an annual rate of Compounded SOFR + 0.60% (reset quarterly), 5.125%, 5.100%, and 5.350%, respectively, and maturing on July 25, 2025, January 15, 2029, August 1, 2033, and August 1, 2053, respectively. Interest on the 2025 notes is payable quarterly, commencing on October 25, 2023. Interest on the 2029 notes is payable semi-annually, commencing on January 15, 2024. Interest on the 2033 notes and 2053 notes is payable semi-annually, commencing on February 1, 2024. In connection with the offering, we incurred a total of $18.7 million in costs. On August 15, 2022, PSOC redeemed its 2.370% Senior Notes due September 15, 2022, with an aggregate principal amount of $500.0 million. The U.S. Dollar denominated unsecured notes (the “U.S. Dollar Denominated Unsecured Notes”) have various financial covenants with which we were in compliance at December 31, 2024. Included in these covenants are (a) a maximum Debt to Total Assets of 65% (approximately 17% at December 31, 2024) and (b) a minimum ratio of Adjusted EBITDA to Interest Expense of 1.5x (approximately 12x for the twelve months ended December 31, 2024) as well as covenants limiting the amount we can encumber our properties with mortgage debt. Euro Denominated Unsecured Notes At December 31, 2024, our Euro denominated unsecured notes (the “Euro Notes”) consisted of four tranches: (i) €242.0 million issued to institutional investors on November 3, 2015, (ii) €500.0 million issued in a public offering on January 24, 2020, (iii) €700.0 million issued in a public offering on September 9, 2021, and (iv) €150.0 million issued to institutional investors on April 11, 2024. Interest is payable semi-annually on the notes issued November 3, 2015 and April 11, 2024, and annually on the notes issued January 24, 2020 and September 9, 2021. The Euro Notes have financial covenants similar to those of the U.S. Dollar Denominated Unsecured Notes. The €150.0 million notes issued to institutional investors on April 11, 2024 bear interest at a fixed rate of 4.080% and mature on April 11, 2039. We received $162.5 million in net proceeds upon converting the Euros to U.S. Dollars. On April 11, 2024, we repaid PSOC’s outstanding €100.0 million aggregate principal amount 1.540% senior notes due April 12, 2024 to the same institutional investors for $108.4 million. We reflect changes in the U.S. Dollar equivalent of the amount payable including the associated interest, as a result of changes in foreign exchange rates as “Foreign currency exchange gain (loss)” on our income statement (gains of $103.0 million for 2024, as compared to losses of $51.6 million for 2023 and gains of $99.2 million for 2022). Mortgage Notes We assumed our non-recourse mortgage debt in connection with property acquisitions, and we recorded such debt at fair value with any premium or discount to the stated note balance amortized using the effective interest method.  At December 31, 2024, the related contractual interest rates of our mortgage notes are fixed, ranging between 3.9% and 7.1%, and mature between September 1, 2028 and July 1, 2030. At December 31, 2024, approximate principal maturities of our Notes Payable are as follows (amounts in thousands): 
 Interest capitalized as real estate totaled $10.5 million, $9.3 million, and $6.0 million for 2024, 2023, and 2022, respectively. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Noncontrolling Interests | 12 Months Ended | 
|---|---|
| Dec. 31, 2024 | |
| Noncontrolling Interest [Abstract] | |
| Noncontrolling Interests | 8.    Noncontrolling Interests There are noncontrolling interests related to several subsidiaries of PSOC we consolidate of which we do not own 100% of the equity. At December 31, 2024, certain of these subsidiaries have issued 499,966 partnership units to third-parties that are redeemable by the holders on a one-for-one basis for common shares of the Company or cash at our option. The holders of these partnership units are entitled to receive the same per-unit cash distributions equal to the dividends paid on our common shares. Noncontrolling interests also include the partnership interests of PSA OP not owned by the Company, including common units (“OP Units”) and vested LTIP units from equity awards we issue to certain officers and trustees of the Company (see Note 11 Share-based Compensation). Vested LTIP units (subject to certain conditions) may be converted into the same number of OP Units of PSA OP, which are redeemable by the holders on a one-for-one basis for common shares of the Company or cash at our option. The holders of OP Units and vested LTIP units are entitled to receive per-unit cash distributions equal to the per-share dividends received by our common shareholders. At December 31, 2024, approximately 0.13% of the partnership interests of PSA OP, representing 227,340 vested LTIP units, were not owned by the Company. There were no outstanding OP Units not owned by the Company at December 31, 2024. We adjust the balance of noncontrolling interests of PSA OP to reflect their proportionate share of the net assets of PSA OP as of the end of each period. | 
| Shareholders' Equity | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Dec. 31, 2024 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Stockholders' Equity Note [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholders' Equity | 9.    Shareholders’ Equity Preferred Shares At December 31, 2024 and 2023, we had the following series of Cumulative Preferred Shares (“Preferred Shares”) outstanding: 
 The holders of our Preferred Shares have general preference rights with respect to liquidation, quarterly distributions, and any accumulated unpaid distributions. Except as noted below, holders of the Preferred Shares do not have voting rights. In the event of a cumulative arrearage equal to six quarterly dividends, holders of all outstanding series of preferred shares (voting as a single class without regard to series) will have the right to elect two additional members to serve on our Board of Trustees (our “Board”) until the arrearage has been cured. At December 31, 2024, there were no dividends in arrears. The affirmative vote of at least 66.67% of the outstanding shares of a series of Preferred Shares is required for any material and adverse amendment to the terms of such series. The affirmative vote of at least 66.67% of the outstanding shares of all of our Preferred Shares, voting as a single class, is required to issue shares ranking senior to our Preferred Shares. Except under certain conditions relating to the Company’s qualification as a REIT, the Preferred Shares are not redeemable prior to the dates indicated on the table above. On or after the respective dates, each of the series of Preferred Shares is redeemable at our option, in whole or in part, at $25.00 per depositary share, plus accrued and unpaid dividends. Holders of the Preferred Shares cannot require us to redeem such shares. Upon issuance of our Preferred Shares, we classify the liquidation value as preferred equity on our consolidated balance sheet with any issuance costs recorded as a reduction to Paid-in capital. In 2022, we issued 10.0 million depositary shares, each representing 0.001 of a share of our 4.100% Series S Preferred Shares, at an issuance price of $25.00 per depositary share, for a total of $250.0 million in gross proceeds, and we incurred $7.2 million in issuance costs. Common Shares During 2024, 2023, and 2022, activity with respect to our common shares was as follows (dollar amounts in thousands): 
 In 2024, our Board authorized an “at the market” offering program pursuant to which management may issue common shares up to an aggregate gross sales price of $2.0 billion on the open market or in privately negotiated transactions. In 2024, we issued 184,390 of our common shares on the open market for aggregate net proceeds of approximately $60.3 million in cash. Our Board has authorized a share repurchase program pursuant to which management may repurchase up to 35,000,000 of our common shares on the open market or in privately negotiated transactions. During 2024, we repurchased 726,865 of our common shares under the repurchase program on the open market for a total cost of $200.0 million. The repurchased shares are constructively retired and returned to an authorized and unissued status. There are 10,551,219 common shares that may yet be repurchased under our repurchase program as of December 31, 2024. On February 4, 2023, our Board declared a 50% increase in our regular common quarterly dividend from $2.00 to $3.00 per share. The distribution equates to an annualized increase to the Company’s regular common dividend from $8.00 to $12.00 per share. Common share dividends paid, including amounts paid to our restricted share unitholders, deferred share unitholders, and unvested LTIP unitholders totaled $2.107 billion ($12.00 per share), $2.111 billion ($12.00 per share), and $3.714 billion ($21.15 per share) for the years ended December 31, 2024, 2023, and 2022, respectively. Included in common share dividends paid during 2022 is $2.3 billion of a special cash dividend (“Special Dividend”) of $13.15 per common share paid on August 4, 2022 in connection with the sale of our equity investment in PSB on July 20, 2022. Preferred share dividends totaled $194.7 million, $194.7 million and $194.4 million for the years ended December 31, 2024, 2023, and 2022, respectively. The unaudited characterization of dividends for U.S. federal corporate income tax purposes is made based upon earnings and profits of the Company, as defined by the Code. For the tax year ended December 31, 2024, distributions for the common shares and all the various series of preferred shares were classified as follows: 
 The ordinary income dividends distributed for the tax year ended December 31, 2024 are not qualified dividends under the Internal Revenue Code; however, they are subject to the 20% deduction under IRS Section 199A. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Related Party Transactions | 12 Months Ended | 
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| Dec. 31, 2024 | |
| Related Party Transactions [Abstract] | |
| Related Party Transactions | 10.   Related Party Transactions At December 31, 2024, Tamara Hughes Gustavson, a current member of our Board, held less than a 0.1% equity interest in, and is a manager of, a limited liability company that owns 66 self-storage facilities in Canada. Two of Ms. Gustavson’s adult children own the remaining equity interest in the limited liability company. These facilities operate under the Public Storage® tradename, which we license to the owners of these facilities for use in Canada on a royalty-free, non-exclusive basis. We have no ownership interest in these facilities, and we do not own or operate any facilities in Canada. If we chose to acquire or develop our own facilities in Canada, we would have to share the use of the Public Storage® name in Canada. We have a right of first refusal, subject to limitations, to acquire the stock or assets of the corporation engaged in the operation of these facilities if their owners agree to sell them. Our subsidiaries reinsure risks relating to loss of goods stored by customers in these facilities, and have received premium payments of approximately $2.2 million, $2.1 million and $2.2 million for 2024, 2023, and 2022, respectively. | 
| Share-Based Compensation | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Dec. 31, 2024 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Share-Based Payment Arrangement [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Share-Based Compensation | 11.   Share-Based Compensation  We recorded share-based compensation expense associated with our equity awards in the various expense categories in the Consolidated Statements of Income as set forth in the following table. In addition, $3.1 million, $2.4 million, and $4.1 million of share-based compensation cost was capitalized as real estate facilities for the year ended December 31, 2024, 2023, and 2022, respectively. 
 Following the amendment of our 2021 Equity and Performance-Based Incentive Plan in February 2024, which further provided for the grant of awards in the form of LTIP units and AO LTIP units of PSA OP, we issued LTIP units and AO LTIP units in substitution for 156,632 RSUs and 2,238,874 stock options, respectively. The LTIP units and AO LTIP units issued have the same vesting conditions as the original awards and remain classified as equity awards. The fair value of the LTIP units and AO LTIP units issued is materially the same as the original awards immediately before the substitution. As a result, we did not adjust the share-based compensation costs associated with these substituted awards. Restricted Share Units and LTIP Units We have service-based and performance-based RSUs and LTIP units outstanding, which generally vest over 5 to 8 years from the grant date. Performance-based RSUs and LTIP units outstanding vest upon meeting certain performance conditions or market conditions. Upon vesting, the grantee of RSUs receives new common shares equal to the number of vested RSUs, less common shares withheld to satisfy the grantee’s statutory tax liabilities arising from the vesting. Vested LTIP units represent noncontrolling interests of PSA OP and may be converted, subject to the satisfaction of all applicable vesting conditions, on a one-for-one basis into common units of PSA OP, which are exchangeable by the holders for cash, or at the Company’s election, on a one-for-one basis into common shares of the Company. Holders of RSUs and LTIP units are entitled to receive per-unit cash distributions equal to the per-share dividends received by our common shareholders, except that holders of performance-based awards are not entitled to receive the full distributions until expiration of the applicable performance period, at which time holders of any earned performance-based awards are entitled to receive a catch-up distribution for the periods prior to such time.  For the years ended December 31, 2024, 2023, and 2022, we incurred share-based compensation cost for RSUs and LTIP units of $34.4 million, $28.2 million, and $39.9 million, respectively. Among the 128,565 RSUs and LTIP units granted in 2024, 34,550 performance-based LTIP unit awards and 3,770 performance-based RSUs were granted to certain executive officers and key employees. The vesting of performance-based LTIP unit awards is dependent upon meeting certain market conditions over a three-year period from March 5, 2024 through March 4, 2027, with continued service-based vesting through the first quarter of 2029. These LTIP unit awards require relative achievement of the Company’s total shareholder return as compared to the weighted average total shareholder return of specified peer groups and can result in grantees earning from zero to a maximum of 69,100 LTIP units. The vesting of performance-based RSUs is dependent upon meeting certain operational performance targets in 2024 and continued service through 2028. These performance targets were met at 100% achievement at December 31, 2024. During 2023, 37,211 RSUs were awarded where vesting is dependent upon meeting certain market conditions over a three-year period from March 15, 2023 through March 14, 2026, with continued service-based vesting through the first quarter of 2028. These RSUs require relative achievement of the Company’s total shareholder return as compared to the weighted average total shareholder return of specified peer groups and can result in grantees earning up to 200% of the target RSUs originally granted. During 2024, we issued LTIP units in substitution for these outstanding RSUs.  During 2022, 21,985 RSUs were awarded where vesting is dependent upon meeting certain market conditions over a three-year period from January 1, 2022 through December 31, 2024, with continued service-based vesting through the first quarter of 2027. During 2024, we issued LTIP units in substitution for these RSUs. As of December 31, 2024, these targets were met at 130% achievement. Remaining compensation cost related to RSUs and LTIP units outstanding at December 31, 2024 totals approximately $68.6 million and is expected to be recognized over the next three years on average. The following tables set forth relevant information with respect to restricted shares (dollar amounts in thousands): 
 
 (a)Number of performance-based awards are presented based on the target performance pursuant to the terms of each applicable award when granted and adjusted to the actual number of awards earned based on the actual performance. (b)Amount granted for performance-based awards includes 6,594 LTIP units for payout adjustments based on Total Shareholder Return modifier for awards granted in 2022. Stock Options and AO LTIP Units We have service-based and performance-based stock options and AO LTIP units outstanding. Performance-based stock options and AO LTIP units vest upon meeting certain performance conditions or market conditions. Stock options and AO LTIP units generally vest over 1 to 5 years, expire 10 years after the grant date, and have an exercise or conversion price equal to the closing trading price of our common shares on the grant date. Common shares of the Company are issued for options exercised and vested LTIP units are issued for AO LTIP units converted. Employees cannot require the Company to settle their awards in cash. For the years ended December 31, 2024, 2023, and 2022, we incurred share-based compensation cost for outstanding stock options of $12.7 million, $14.9 million and $19.9 million, respectively. During 2024, we granted 106,484 of service-based AO LTIP units, 63,717 of performance-based AO LTIP units, and 3,600 service-based options to certain executive officers and trustees. The vesting of the performance-based AO LTIP units is dependent upon meeting certain market conditions over a three-year period from March 5, 2024 through March 4, 2027, with continued service-based vesting through the first quarter of 2029. These performance-based AO LTIP units require relative achievement of the Company’s total shareholder return as compared to the weighted average total shareholder return of specified peer groups and can result in grantees earning from zero to a maximum of 127,434 AO LTIP units. During 2023, we granted 60,000 stock options in connection with non-management trustee compensation.  117,168 stock options were awarded during 2023 where vesting is dependent upon meeting certain market conditions over the three-year period from March 15, 2023 through March 14, 2026, with continued service-based vesting through the first quarter of 2028. These stock options require relative achievement of the Company’s total shareholder return as compared to the weighted average total shareholder return of specified peer groups and can result in grantees earning up to 200% of the target options originally granted. During 2024, we issued AO LTIP units in substitution for these stock options.  During 2022, 77,683 stock options were awarded where vesting is dependent upon meeting certain market conditions over the three-year period from January 1, 2022 through December 31, 2024, with continued service-based vesting through the first quarter of 2027. During 2024, we issued AO LTIP units in substitution for these stock options. As of December 31, 2024, these targets were met at 130% achievement.  The stock options and AO LTIP units outstanding at December 31, 2024 have an aggregate intrinsic value (the excess, if any, of each option’s market value over the exercise price) of approximately $172.5 million and remaining average contractual lives of approximately five years. Total compensation cost related to nonvested AO LTIP units and stock options that have not yet been recognized is $10.2 million and are expected to be recognized as compensation cost over approximately two years on average. Exercisable stock options and convertible AO LTIP units have an aggregate intrinsic value of approximately $143.4 million at December 31, 2024 and remaining average contractual lives of approximately four years. Additional information with respect to stock options and AO LTIP units during 2024, 2023, and 2022 is as follows: 
 (a)Number of performance-based awards are presented based on the target performance pursuant to the terms of each applicable award when granted and adjusted to the actual number of awards earned based on the actual performance. (b)On August 4, 2022, we paid a Special Dividend of $13.15 per common share to shareholders of record as of August 1, 2022. Stock options that were outstanding at the time of the Special Dividend were adjusted pursuant to the anti-dilution provisions of the Company’s applicable equity and performance-based incentive compensation plans that provide for equitable adjustments in the event of an extraordinary cash dividend. The anti-dilution adjustments proportionately increased the number of outstanding stock options and reduced the exercise prices of outstanding stock options by a conversion rate of 1.03275, resulting in an increase of 104,348 stock options outstanding. The adjustments did not result in incremental share-based compensation expense. (c)Amount granted for performance-based stock options includes 63,257 options for payout adjustments based on Total Shareholder Return modifier for options granted in 2021. (d)Amount granted for performance-based awards includes 24,065 AO LTIP units for payout adjustments based on Total Shareholder Return for awards granted in 2022.  (e)214,996 common shares were issued upon the exercise of stock options. 186,944 vested LTIP units were issued upon conversion of 468,352 AO LTIP units in the year ended December 31, 2024. 
 Trustee Deferral ProgramNon-management trustees may elect to receive all or a portion of their cash retainers in cash, unrestricted common shares, or fully-vested DSUs to be settled at a specified future date. Unrestricted common shares and/or DSUs will be granted to the non-management trustee on the last day of each calendar quarter based on the cash retainer earned for that quarter and converted into a number of shares or units based on the applicable closing price of our common shares on such date. During 2024, we granted 1,836 DSUs and 434 unrestricted common shares. During 2024, 871 previously granted DSUs were settled in common shares. A total of 11,734 DSUs were outstanding at December 31, 2024 (10,769 at December 31, 2023). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net Income per Common Share | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Earnings Per Share [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net Income per Common Share | 12.   Net Income per Common Share We allocate net income to (i) noncontrolling interests based upon their contractual rights in the respective subsidiaries or for participating noncontrolling interests based upon their participation in both distributed and undistributed earnings of the Company, (ii) preferred shareholders, for distributions paid or payable, (iii) preferred shareholders, to the extent redemption cost exceeds the related original net issuance proceeds (a “preferred share redemption charge”), and (iv) RSUs and unvested LTIP units, for non-forfeitable dividends and distributions paid and adjusted for participation rights in undistributed earnings of the Company.  We calculate basic and diluted net income per common share based upon net income allocable to common shareholders, divided by (i) weighted average common shares for basic net income per common share, and (ii) weighted average common shares adjusted for the impact of dilutive stock options and AO LTIP units outstanding for diluted net income per common share. Stock options and AO LTIP units representing 138,739 common shares were excluded from the computation of diluted earnings per share for 2024, as compared to 375,577 common shares for 2023, because their effect would have been antidilutive. The following table reconciles the numerators and denominators of the basic and diluted net income per common shares computation for the year ended December 31, 2024, 2023, and 2022, respectively (in thousands, except per share amounts): 
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| Segment Information | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Dec. 31, 2024 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Segment Reporting [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Segment Information | 13.   Segment Information Our operating segments reflect the significant components of our operations where discrete financial information is evaluated separately by our President and Chief Executive Officer, who is our chief operating decision maker (“CODM”).  Self-Storage Operations The Self-Storage Operations reportable segment reflects the aggregated rental operations from the self-storage facilities we own through the following operating segments: (i) Same Store Facilities, (ii) Acquired Facilities, (iii) Newly Developed and Expanded Facilities, and (iv) Other Non-Same Store Facilities. Our CODM evaluates performance and allocates resources for the Self-Storage Operations reportable segment based on its Net Operating Income (“NOI”), which represents the related revenue less cost of operations. Our CODM utilizes NOI during the budget and forecasting process to allocate capital and personnel resources and evaluates financial performance and operating trends of the reportable segment based on the budget-to-actual variance and year-over-year change of the NOI on an ongoing basis. The presentation in the table below sets forth the revenue, significant expense categories, and NOI of this reportable segment, as well as the related depreciation expense. For all periods presented, substantially all of our real estate facilities, goodwill and other intangible assets, other assets, and accrued and other liabilities are associated with the Self-Storage Operations reportable segment.  Ancillary Operations The Ancillary Operations reflects the combined operations of our tenant reinsurance, merchandise sales, and third party property management operating segments. Presentation of Segment Information The following table reconciles NOI and net income attributable to our reportable segment to our consolidated net income: 
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| Commitments and Contingencies | 12 Months Ended | 
|---|---|
| Dec. 31, 2024 | |
| Commitments and Contingencies Disclosure [Abstract] | |
| Commitments and Contingencies | 14.   Commitments and Contingencies Contingent Losses We are a party to various legal proceedings and subject to various claims and complaints; however, we believe that the likelihood of these contingencies resulting in a material loss to the Company, either individually or in the aggregate, is remote. Insurance and Loss Exposure We carry property, earthquake, general liability, employee medical insurance, and workers compensation coverage through internationally recognized insurance carriers, subject to deductibles. Our deductible for general liability is $2.0 million per occurrence. Our annual deductible for property loss is $25.0 million per occurrence. This deductible decreases to $5.0 million once we reach $35.0 million in aggregate losses for occurrences that exceed $5.0 million. Insurance carriers’ aggregate limits on these policies of $75.0 million for property losses and $102.0 million for general liability losses are higher than estimates of maximum probable losses that could occur from individual catastrophic events determined in recent engineering and actuarial studies; however, in case of multiple catastrophic events, these limits could be exceeded. We reinsure a program that provides insurance to our customers from an independent third-party insurer. This program covers customer claims for losses to goods stored at our facilities as a result of specific named perils (earthquakes are not covered by this program), up to a maximum limit of $5,000 per storage unit. We reinsure all risks in this program, but purchase insurance to cover this exposure for a limit of $15.0 million for losses in excess of $10.0 million per occurrence. We are subject to licensing requirements and regulations in all states. Customers participate in the program at their option. At December 31, 2024, there were approximately 1.4 million certificates held by self-storage customers under the program, representing aggregate coverage of approximately $6.8 billion. Commitments We have construction commitments representing future expected payments for construction under contract totaling $194.9 million at December 31, 2024. We expect to pay approximately $166.1 million in 2025 and $28.8 million in 2026 for these construction commitments. We have future contractual payments on land, equipment and office space under various lease commitments totaling $61.8 million at December 31, 2024. We expect to pay approximately $4.1 million in each of 2025 and 2026, $2.7 million in 2027, $2.5 million in each of 2028 and 2029, and $45.9 million thereafter for these commitments. We have an unfunded loan commitment totaling $12.5 million at December 31, 2024. We expect to fund the loan in 2025 subject to the satisfaction of certain conditions. | 
| Subsequent Events | 12 Months Ended | 
|---|---|
| Dec. 31, 2024 | |
| Subsequent Events [Abstract] | |
| Subsequent Events | 15.   Subsequent Events Subsequent to December 31, 2024, we acquired or were under contract to acquire nine self-storage facilities across six states with 0.7 million net rentable square feet, for $140.7 million. In early 2025, multiple wildfires erupted in southern California and caused significant destruction of business and residential structures. We did not incur any direct property damage in the affected areas. In response to the devastation, a “State of Emergency” has been declared for Los Angeles County and Ventura County, under which a temporary governmental pricing limitation is in place for our self-storage facilities located in these counties. These self-storage facilities generated approximately 10% of revenues earned by our Same Store Facilities in 2024. We anticipate a potentially significant negative impact on the revenue growth from these self-storage facilities, the extent of which depends largely on the duration of the State of Emergency order and other future actions by government authorities, among other factors. | 
| SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Dec. 31, 2024 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION | 
 
 
 Note: Buildings and improvements are depreciated on a straight-line basis over estimated useful lives ranging generally between 5 to 40 years. In addition, disclosures of the number and square footage of our facilities are unaudited. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure - USD ($) $ in Thousands | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | |
| Pay vs Performance Disclosure | |||
| Net Income (Loss) | $ 2,072,011 | $ 2,148,327 | $ 4,349,147 | 
| Insider Trading Arrangements | 3 Months Ended | 
|---|---|
| Dec. 31, 2024 | |
| Trading Arrangements, by Individual | |
| Rule 10b5-1 Arrangement Adopted | false | 
| Non-Rule 10b5-1 Arrangement Adopted | false | 
| Rule 10b5-1 Arrangement Terminated | false | 
| Non-Rule 10b5-1 Arrangement Terminated | false | 
| Insider Trading Policies and Procedures | 12 Months Ended | 
|---|---|
| Dec. 31, 2024 | |
| Insider Trading Policies and Procedures [Line Items] | |
| Insider Trading Policies and Procedures Adopted | true | 
| Cybersecurity Risk Management and Strategy Disclosure | 12 Months Ended | 
|---|---|
| Dec. 31, 2024 | |
| Cybersecurity Risk Management, Strategy, and Governance [Line Items] | |
| Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block] | Our cybersecurity program focuses on (i) preventing and preparing for cybersecurity incidents, (ii) detecting and analyzing cybersecurity incidents, and (iii) containing, eradicating, recovering from, and reporting cybersecurity events.  Prevention and Preparation We identify and address information security risks by employing a defense-in-depth methodology, consisting of both proactive and reactive elements, which provides multiple, redundant defensive measures and prescribes actions to take in case a security control fails or a vulnerability is exploited. We leverage internal resources, along with strategic external partnerships, to mitigate cybersecurity threats to the Company. We have partnerships for security operations center (SOC) services, penetration testing, incident response, and various third-party assessments. We deploy both commercially available solutions and proprietary systems to actively manage threats to our information technology environment. We assess our cybersecurity program against various frameworks. Our information security program is certified for compliance with the Payment Card Industry Data Security Standard for the safe handling and protection of credit card data. Annually, we are assessed, either internally or by an independent third party, against the National Institute of Standards and Technology (NIST) 800-53 Moderate Baseline. We also utilize reports prepared by our external partners to assess our cyber proficiency on a standalone basis and comparatively against peers and other companies, and we regularly engage external resources regarding emerging threats. We have policies and procedures to oversee and identify the cybersecurity risks associated with our use of third-party service providers, including contractual mechanisms, as well as the regular review of SOC reports, relevant cyber attestations, and other independent cyber ratings. We employ an information security and training program for our employees, including annual mandatory computer-based training, regular internal communications, and ongoing end-user testing to measure the effectiveness of our information security program. As part of this commitment, we require our employees to complete a Cybersecurity Awareness eCourse and acknowledge our Information Security policy each year. In addition, we have an established schedule and process for regular phishing awareness campaigns that are designed to imitate real-world contemporary threats and provide immediate feedback (and, if necessary, additional training or remedial action) to employees. As discussed above, we maintain an IRP that guides our response to a cybersecurity incident. Annually, we test the IRP’s response procedures, including thorough disaster response and business continuity plan exercises. These exercises are intended to challenge and validate our information security response and resources through simulated cybersecurity incidents, including engagement of outside cybersecurity legal counsel, other third-party partners, key internal personnel, executive management, and our Board.  Detection and Analysis Cybersecurity incidents may be detected through a variety of means, which may include, but are not limited to, automated event-detection notifications, employee notifications, notification from external parties (e.g., our third-party information technology provider), and proactive threat hunting in conjunction with our external partners. Once a potential cybersecurity incident is identified, including a third-party cybersecurity event, the incident response team designated pursuant to the IRP follows the procedures set forth in the plan to investigate the potential incident, including determining the nature of the event. Containment, Eradication, Recovery, and Reporting Our IRP sets forth the procedures we follow in responding to a cybersecurity incidents. Once a cybersecurity incident is contained, our focus shifts to remediation and recovery. These activities depend on the nature of the cybersecurity incident and may include rebuilding systems and/or hosts, replacing compromised files with clean versions and validation of files or data that may have been affected. We also maintain cybersecurity insurance providing coverage for certain costs related to security failures and specified cybersecurity-related incidents that interrupt our network or networks of our vendors, in all cases up to specified limits and subject to certain exclusions. Our IRP provides clear communication protocols, including with respect to members of executive management, internal and external counsel, the Audit Committee and our Board. These protocols include a framework for assessing our SEC and other regulatory reporting obligations related to a cybersecurity incident.Following the conclusion of an incident, the incident response team will generally assess the effectiveness of the cybersecurity program and IRP and make adjustments as appropriate. | 
| Cybersecurity Risk Management Processes Integrated [Flag] | true | 
| Cybersecurity Risk Management Processes Integrated [Text Block] | Public Storage devotes significant resources to protecting and continuing to improve the security of its computer systems, software, networks, and other technology assets. Our security efforts are designed to preserve the confidentiality, integrity, and continued availability of information owned by, or in the care of, the Company and protect against, among other things, cybersecurity attacks by unauthorized parties attempting to obtain access to confidential information, destroy data, disrupt or degrade service, sabotage systems, or cause other damage. | 
| Cybersecurity Risk Management Third Party Engaged [Flag] | true | 
| Cybersecurity Risk Third Party Oversight and Identification Processes [Flag] | true | 
| Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag] | false | 
| Cybersecurity Risk Board of Directors Oversight [Text Block] | Our Board considers cybersecurity risk one of the most significant risks to our business. The Board has delegated to the Audit Committee oversight of cybersecurity, data privacy, and other information technology risks affecting the Company. Our CTO and CISO typically provide quarterly reports to the Audit Committee, which also provides quarterly reports on its activities to the Board. Annually, the Board receives a comprehensive update regarding the Company’s cybersecurity efforts, which may include a cybersecurity tabletop exercise, presentation by third party cybersecurity experts, or similar events. Several members of our Board and Audit Committee have cybersecurity, data privacy, or related experience from their principal occupation or other professional experience. | 
| Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block] | Our Board considers cybersecurity risk one of the most significant risks to our business. The Board has delegated to the Audit Committee oversight of cybersecurity, data privacy, and other information technology risks affecting the Company. Our CTO and CISO typically provide quarterly reports to the Audit Committee, which also provides quarterly reports on its activities to the Board. Annually, the Board receives a comprehensive update regarding the Company’s cybersecurity efforts, which may include a cybersecurity tabletop exercise, presentation by third party cybersecurity experts, or similar events. Several members of our Board and Audit Committee have cybersecurity, data privacy, or related experience from their principal occupation or other professional experience. | 
| Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block] | Our Board considers cybersecurity risk one of the most significant risks to our business. The Board has delegated to the Audit Committee oversight of cybersecurity, data privacy, and other information technology risks affecting the Company. Our CTO and CISO typically provide quarterly reports to the Audit Committee, which also provides quarterly reports on its activities to the Board. Annually, the Board receives a comprehensive update regarding the Company’s cybersecurity efforts, which may include a cybersecurity tabletop exercise, presentation by third party cybersecurity experts, or similar events. Several members of our Board and Audit Committee have cybersecurity, data privacy, or related experience from their principal occupation or other professional experience. | 
| Cybersecurity Risk Role of Management [Text Block] | Our risk management processes include a comprehensive enterprise risk management framework focused on (i) evaluating the risks facing the Company and aligning the Company’s efforts to mitigate those risks with its strategy and risk appetite; (ii) communicating and improving the Company’s understanding of its key risks and responsive actions; and (iii) providing the Board with a defined, rated risk inventory and framework against which the Board can direct its responsibilities to oversee the Company’s risk assessment and risk management efforts. Our cybersecurity program is a key component of our overall enterprise risk management framework. A dedicated team of technology professionals monitors and manages cybersecurity risks. They are led by our Chief Technology Officer (CTO), who has significant experience in senior leadership positions with responsibility for cybersecurity and IT risk management, and our Chief Information Security Officer (CISO), who is a Certified Information Systems Security Professional (CISSP). Their teams are responsible for leading enterprise-wide cyber resilience strategy, policy, standards, architecture, and processes. Our CTO and CISO regularly engage with our Chief Administrative Officer. They also report monthly on cybersecurity matters to our entire executive management team. In the event of an incident that jeopardizes the confidentiality, integrity, or availability of the information technology systems we use, we utilize a regularly updated information security incident response plan (IRP). The IRP is overseen by our executive Incident Response Committee (IRC), which consists of our Chief Financial and Investment Officer, Chief Administrative Officer, Chief Legal Officer, and CTO. The IRP guides our internal response to cybersecurity incidents. Pursuant to our IRP and its escalation protocols, designated personnel are responsible for assessing the severity of the incident and associated threat, containing the threat, remediating the threat, including recovery of data and access to systems, analyzing the reporting obligations associated with the incident, and performing post-incident analysis and program improvements.  While the particular personnel assigned to an incident response team will depend on the particular facts and circumstances, the response team is generally led by the IRC with support from internal personnel and external counsel or other experts. | 
| Cybersecurity Risk Management Positions or Committees Responsible [Flag] | true | 
| Cybersecurity Risk Management Positions or Committees Responsible [Text Block] | A dedicated team of technology professionals monitors and manages cybersecurity risks. They are led by our Chief Technology Officer (CTO), who has significant experience in senior leadership positions with responsibility for cybersecurity and IT risk management, and our Chief Information Security Officer (CISO), who is a Certified Information Systems Security Professional (CISSP). Their teams are responsible for leading enterprise-wide cyber resilience strategy, policy, standards, architecture, and processes. Our CTO and CISO regularly engage with our Chief Administrative Officer. They also report monthly on cybersecurity matters to our entire executive management team. | 
| Cybersecurity Risk Management Expertise of Management Responsible [Text Block] | A dedicated team of technology professionals monitors and manages cybersecurity risks. They are led by our Chief Technology Officer (CTO), who has significant experience in senior leadership positions with responsibility for cybersecurity and IT risk management, and our Chief Information Security Officer (CISO), who is a Certified Information Systems Security Professional (CISSP). Their teams are responsible for leading enterprise-wide cyber resilience strategy, policy, standards, architecture, and processes. Our CTO and CISO regularly engage with our Chief Administrative Officer. They also report monthly on cybersecurity matters to our entire executive management team. | 
| Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block] | Our Board considers cybersecurity risk one of the most significant risks to our business. The Board has delegated to the Audit Committee oversight of cybersecurity, data privacy, and other information technology risks affecting the Company. Our CTO and CISO typically provide quarterly reports to the Audit Committee, which also provides quarterly reports on its activities to the Board. Annually, the Board receives a comprehensive update regarding the Company’s cybersecurity efforts, which may include a cybersecurity tabletop exercise, presentation by third party cybersecurity experts, or similar events. Several members of our Board and Audit Committee have cybersecurity, data privacy, or related experience from their principal occupation or other professional experience. | 
| Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag] | true | 
| Basis of Presentation and Summary of Significant Accounting Policies (Policies) | 12 Months Ended | 
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| Dec. 31, 2024 | |
| Accounting Policies [Abstract] | |
| Basis of Presentation | Basis of Presentation We have prepared the accompanying consolidated financial statements in accordance with U.S. generally accepted accounting principles (“GAAP”) as set forth in the Accounting Standards Codification of the Financial Accounting Standards Board, and in conformity with the rules and regulations of the Securities and Exchange Commission (“SEC”). Disclosures of the number and square footage of facilities, as well as the number and coverage of tenant reinsurance policies (Note 14) are unaudited and outside the scope of our independent registered public accounting firm’s audit of our financial statements in accordance with the standards of the Public Company Accounting Oversight Board (U.S.). | 
| Consolidation and Equity Method of Accounting | Consolidation and Equity Method of Accounting We consider entities to be Variable Interest Entities (“VIEs”) when they have insufficient equity to finance their activities without additional subordinated financial support provided by other parties, or the equity holders as a group do not have a controlling financial interest. In addition, we have general partner interests in limited partnerships along with third-party investors to develop, construct or operate self-storage facilities. As the general partner, we consider the limited partnerships to be VIEs if the limited partners lack both substantive participating rights and substantive kick-out rights. We consolidate VIEs when we have (i) the power to direct the activities most significantly impacting economic performance, and (ii) either the obligation to absorb losses or the right to receive benefits from the VIE. PSA OP met the definition of a VIE and is consolidated by the Company as the primary beneficiary of PSA OP. All of the assets and liabilities of the Company are held by PSA OP. The total assets, primarily real estate assets, and the total liabilities of our other consolidated VIEs are not material as of December 31, 2024. We consolidate all other entities when we control them through voting shares or contractual rights. We refer to the entities we consolidate, for the period in which the reference applies, collectively as the “Subsidiaries,” and we eliminate intercompany transactions and balances.  We account for our investments in entities that we do not consolidate but over which we have significant influence using the equity method of accounting. We refer to these entities, for the periods in which the reference applies, collectively as the “Unconsolidated Real Estate Entities,” and we eliminate intra-entity profits and losses and amortize any differences between the cost of our investment and the underlying equity in net assets against equity in earnings as if the Unconsolidated Real Estate Entity were a consolidated subsidiary. Equity in earnings of unconsolidated real estate entities presented on our income statements represents our pro-rata share of the earnings of the Unconsolidated Real Estate Entities. The dividends we receive from the Unconsolidated Real Estate Entities are reflected on our consolidated statements of cash flows as “distributions from cumulative equity in earnings of unconsolidated real estate entities” to the extent of our cumulative equity in earnings, with any excess classified as “distributions in excess of cumulative equity in earnings from unconsolidated real estate entities.” | 
| Use of Estimates | Use of Estimates The preparation of consolidated financial statements and accompanying notes in conformity with GAAP requires us to make estimates and assumptions that affect the amounts reported. Actual results could differ from those estimates and assumptions. | 
| Cash Equivalents | Cash Equivalents Cash equivalents represent highly liquid financial instruments that mature within three months of acquisition such as money market funds with a rating of at least AAA by Standard & Poor’s, commercial paper that is rated A1 by Standard & Poor’s or deposits with highly rated commercial banks. | 
| Fair Value | Fair Value As used herein, the term “fair value” is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. In the absence of active markets for identical assets or liabilities, such measurements involve developing assumptions based on market observable data and, in the absence of such data, internal information that is consistent with what market participants would use in a hypothetical transaction that occurs at the balance sheet date.  Assets and liabilities recorded at fair value are measured and classified in accordance with a three-tier fair value hierarchy based on the observability of the inputs available in the market used to measure fair value: Level 1 Quoted prices in active markets for identical assets or liabilities at the measurement date.  Level 2 Significant observable inputs other than Level 1, that are observable for the asset or liability, either directly or indirectly through corroboration with observable market data.  Level 3 Unobservable inputs that are supported by little or no market data for the related assets or liabilities.  The categorization of a financial instrument within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Our financial instruments consist of cash and cash equivalents, notes receivable, other assets, other liabilities, and notes payable. Cash equivalents, notes receivable, other assets and other liabilities are stated at book value, which approximates fair value as of the balance sheet date due to the short time period to maturity.  We estimate and disclose the fair value of our notes payable using Level 2 inputs by discounting the related future cash flows at a rate based upon quoted interest rates for securities that have similar characteristics such as credit quality and time to maturity.We use significant judgment to estimate fair values of real estate facilities, goodwill, and other intangible assets for the purposes of purchase price allocation or impairment analysis. In estimating their values, we consider Level 3 inputs such as market prices of land, market capitalization rates, expected returns, earnings multiples, projected levels of earnings, costs of construction, and functional depreciation. | 
| Real Estate Facilities | Real Estate Facilities We record real estate facilities at cost. We capitalize all costs incurred to acquire, develop, construct, renovate and improve facilities as part of major repair and maintenance programs, including interest and property taxes incurred during the construction period. We expense the costs of demolition of existing facilities associated with a renovation as incurred. We allocate the net acquisition cost of acquired real estate facilities to the underlying land, buildings, and identified intangible assets based upon their respective individual estimated fair values.  We expense costs associated with dispositions of real estate, as well as routine repairs and maintenance costs, as incurred. We depreciate buildings and improvements on a straight-line basis over estimated useful lives ranging generally between 5 to 40 years. When we sell a full or partial interest in a real estate facility without retaining a controlling interest following sale, we recognize a gain or loss on sale as if 100% of the property was sold at fair value. If we retain a controlling interest following the sale, we record a noncontrolling interest for the book value of the partial interest sold, and recognize additional paid-in capital for the difference between the consideration received and the partial interest at book value. | 
| Goodwill and Other Intangible Assets | Goodwill and Other Intangible Assets Intangible assets consist of goodwill, the Shurgard® trade name, which Shurgard uses pursuant to a fee-based licensing agreement, and finite-lived assets. Goodwill and the Shurgard® trade name have indefinite lives and are not amortized. Our finite-lived assets consist primarily of (i) acquired customers in place amortized relative to the benefit of the customers in place, with such amortization reflected as depreciation and amortization expense on our income statement, (ii) property tax abatements acquired and amortized relative to the reduction in property tax paid, with such amortization reflected as self-storage cost of operations on our income statement and (iii) acquired non real estate-related contracts, with such amortization reflected as depreciation and amortization expense on our income statement. | 
| Notes Receivable | Notes Receivable We account for notes receivable from bridge loans we originate to third-party self-storage owners at amortized cost. The bridge loans, collateralized by operating self-storage properties, typically have a term of three years or four years with two one-year extensions, and have variable interest rates. We recognize interest income and other fee income related to the bridge loans using the effective interest method, with deferred fees and costs amortized over the lives of the related loans as yield adjustment. We recognize an allowance for expected credit losses for outstanding notes receivable and unfunded loan commitments. At December 31, 2024, we had a notes receivable balance of $10.0 million included in other assets and an unfunded loan commitment of $12.5 million expected to close in 2025 subject to the satisfaction of certain conditions. As of December 31, 2024, none of the notes receivable were in past-due or nonaccrual status and the allowance for expected credit losses was immaterial. | 
| Evaluation of Asset Impairment | Evaluation of Asset Impairment We evaluate our real estate and finite-lived intangible assets for impairment each quarter. If there are indicators of impairment and we determine that the asset is not recoverable from future undiscounted cash flows to be received through the asset’s remaining life (or, if earlier, the expected disposal date), we record an impairment charge to the extent the carrying amount exceeds the asset’s estimated fair value or net proceeds from expected disposal.  We evaluate our investment in unconsolidated real estate entity for impairment quarterly. We record an impairment charge to the extent the carrying amount exceeds estimated fair value, when we believe any such shortfall is other than temporary.  We evaluate goodwill for impairment annually and whenever relevant events, circumstances, and other related factors indicate that it is more likely than not that the fair value of the related reporting unit is less than the carrying amount. When we conclude that it is not more likely than not that the fair value of the reporting unit is less than the aggregate carrying amount, no impairment charge is recorded and no further analysis is performed. Otherwise, we record an impairment charge to the extent the carrying amount of the goodwill exceeds the amount that would be allocated to goodwill if the reporting unit were acquired for estimated fair value. We evaluate other indefinite-lived intangible assets, such as the Shurgard® trade name for impairment at least annually and whenever relevant events, circumstances and other related factors indicate that it is more likely than not that the asset is impaired. When we conclude that it is not more likely than not that the asset is impaired, we do not record an impairment charge and no further analysis is performed. Otherwise, we record an impairment charge to the extent the carrying amount exceeds the asset’s estimated fair value. | 
| Revenue and Expense Recognition | Revenue and Expense Recognition We recognize revenues from self-storage facilities, which primarily comprise rental income earned pursuant to month-to-month leases, as well as associated late charges and administrative fees, as earned. Promotional discounts reduce rental income over the promotional period, which is generally one month. We recognize ancillary revenues when earned. We accrue for property tax expense based upon actual amounts billed and, in some circumstances, estimates when bills or assessments have not been received from the taxing authorities. If these estimates are incorrect, the timing and amount of expense recognition could be incorrect. We expense cost of operations (including advertising expenditures), general and administrative expense, and interest expense as incurred. | 
| Foreign Currency Exchange Translation | Foreign Currency Exchange Translation The local currency (the Euro) is the functional currency for our equity interests in Shurgard. The related balance sheet amounts are translated into U.S. Dollars at the exchange rates at the respective financial statement date, while amounts on our consolidated statements of income are translated at the average exchange rates during the respective period. Cumulative translation adjustments, are included in equity as a component of accumulated other comprehensive income (loss). When financial instruments denominated in a currency other than the U.S. Dollar are expected to be settled in cash in the foreseeable future, the impact of changes in the U.S. Dollar equivalent are reflected in current earnings.At December 31, 2024, due primarily to our investment in Shurgard (Note 4) and our notes payable denominated in Euros (Note 7), our operating results and financial position are affected by fluctuations in currency exchange rates between the Euro, against the U.S. Dollar. The Euro was translated at exchange rates of approximately 1.039 U.S. Dollars per Euro at December 31, 2024 (1.104 at December 31, 2023), and average exchange rates of 1.082, 1.081 and 1.054 for the years ended December 31, 2024, 2023, and 2022, respectively. | 
| Income Taxes | Income Taxes We and a subsidiary of PSOC have elected to be treated as a REIT, as defined in the Internal Revenue Code of 1986, as amended (the “Code”). For each taxable year in which we qualify for taxation as a REIT, we will not be subject to U.S. federal corporate income tax on our “REIT taxable income” (generally, taxable income subject to specified adjustments, including a deduction for dividends paid and excluding our net capital gain) that is distributed to our shareholders. We believe we have met these REIT requirements for all periods presented herein. Accordingly, we have recorded no U.S. federal corporate income tax expense related to our REIT taxable income.  We have elected taxable REIT subsidiary (“TRS”) status for some of our consolidated subsidiaries. Our tenant reinsurance, merchandise, third party management operations and our equity investment in Shurgard are conducted under these TRSs and are subject to federal corporate income tax. For these entities, deferred tax assets and liabilities for temporary differences are recognized based on the future tax consequences attributable to differences that exist between the financial statement carrying amounts of assets and liabilities and their respective tax bases, as well as tax attributes such as operating loss, capital loss and tax credits carryforwards on a taxing jurisdiction basis. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are established when necessary to reduce deferred tax assets to the amounts that are expected more likely than not to be realized in the future.   We recognize tax benefits of uncertain income tax positions only if we believe it is more likely than not that the position would ultimately be sustained assuming the relevant taxing authorities had full knowledge of the relevant facts and circumstances of our positions. As of December 31, 2024, we had no uncertain tax positions. We also incur income taxes in certain state and local jurisdictions, which are included in income tax expense in the Consolidated Statements of Income. | 
| Share-Based Compensation | Share-Based Compensation Under various share-based compensation plans and under terms established or modified by our Board or a committee thereof, we grant awards to trustees, officers, and key employees, including non-qualified options to purchase the Company’s common shares, restricted share units (“RSUs”), deferred share units (“DSUs”), and unrestricted common shares issued in lieu of trustee compensation.  In February 2024, we amended our 2021 Equity and Performance-Based Incentive Plan to further provide for the grant of awards to certain officers and trustees of the Company in the form of LTIP units and appreciation-only LTIP units (“AO LTIP units”) of PSA OP. LTIP units are structured as “profit interests” for U.S. federal income tax purposes. We estimate the fair value of share-based payment awards on the date of grant. We determine the fair value of RSUs, DSUs, and LTIP units with no market conditions based on the closing market price of the Company’s common shares on the date of grant. We value stock options and AO LTIP units with no market conditions at the grant date using the Black-Scholes option-pricing model. We value awards with market conditions at the grant date using a Monte-Carlo valuation simulation. Our determination of the fair value of share-based payment awards on the date of grant using an option-pricing model or Monte-Carlo valuation simulation is affected by our stock price as well as assumptions regarding a number of subjective and complex variables. These variables include, but are not limited to, our expected stock price volatility over the expected term of the awards. For stock options and AO LTIP units, variables also include actual and projected stock option exercise and AO LTIP unit conversion behaviors. For awards with performance conditions, we adjust compensation cost each quarter as needed for any changes in the assessment of the probability that the specified performance criteria will be achieved. We amortize the grant-date fair value of awards as compensation expense over the service period, which begins on the grant date and ends on the expected vesting date. For awards that are earned solely upon the passage of time and continued service, the entire cost of the award is amortized on a straight-line basis over the service period. For awards with market and/or performance conditions, the individual cost of each vesting is amortized separately over each individual service period (the “accelerated attribution” method). For awards with performance conditions, the estimated number of stock awards that will ultimately vest requires judgment, and to the extent actual results or updated estimates differ from our current estimates, such amounts will be recorded as a cumulative adjustment in the period estimates are revised.  In amortizing share-based compensation expense, we do not estimate future forfeitures. Instead, we reverse previously amortized share-based compensation expense with respect to grants that are forfeited in the period the employee terminates employment. Our share-based compensation plans allow immediate vesting of outstanding unvested awards upon retirement (“Retirement Acceleration”) for employees who meet certain conditions. We accelerate amortization of compensation expense for each grant by changing the end of the service period from the original vesting date to the date an employee is expected to be eligible for Retirement Acceleration, if earlier. | 
| Recent Accounting Pronouncements Not Yet Adopted | Recent Accounting Pronouncements Not Yet Adopted In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, to enhance the transparency and decision-usefulness of income tax disclosures, particularly in the rate reconciliation table and disclosures about income taxes paid. The ASU’s amendments are effective for annual periods beginning after December 15, 2024 on a prospective basis. Early adoption is permitted. We are currently evaluating the impact of this ASU on our Consolidated Financial Statements and related disclosures. In November 2024, the FASB issued ASU 2024-03,  Income Statement — Reporting Comprehensive Income — Expense Disaggregation Disclosures (Subtopic 220-40) that requires the disclosure of additional information related to certain costs and expenses, including amounts of inventory purchases, employee compensation, and depreciation and amortization included in each income statement line item. The guidance also requires disclosure of the total amount of selling expenses and the entity’s definition selling expenses. The guidance is effective for annual periods beginning after December 15, 2026 and interim periods within fiscal years beginning after December 15, 2027. The guidance may be applied prospectively or retrospectively. Early adoption is permitted. We are currently evaluating the impact of this ASU on our Consolidated Financial Statements and related disclosures. | 
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| Equity Method Investments and Joint Ventures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Investments in Real Estate Entities And Equity in Earnings of Real Estate Entities | The following table sets forth our equity in earnings of the Unconsolidated Real Estate Entities (amounts in thousands): 
 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Goodwill and Other Intangible Assets (Tables) | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec. 31, 2024 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Goodwill and Intangible Assets Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Intangible Assets and Goodwill | Goodwill and other intangible assets consisted of the following (amounts in thousands): 
 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | 
 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Payable (Tables) | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec. 31, 2024 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Payable [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Notes Payable | 
 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Maturities of Notes Payable | At December 31, 2024, approximate principal maturities of our Notes Payable are as follows (amounts in thousands): 
 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholders' Equity (Tables) | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec. 31, 2024 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Stockholders' Equity Note [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Preferred Shares | At December 31, 2024 and 2023, we had the following series of Cumulative Preferred Shares (“Preferred Shares”) outstanding: 
 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Issuance of Common Shares | During 2024, 2023, and 2022, activity with respect to our common shares was as follows (dollar amounts in thousands): 
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| Schedule of Distribution Classification | 
 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Share-Based Compensation (Tables) | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Dec. 31, 2024 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Share-Based Payment Arrangement [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Share-Based Compensation Expense | We recorded share-based compensation expense associated with our equity awards in the various expense categories in the Consolidated Statements of Income as set forth in the following table. In addition, $3.1 million, $2.4 million, and $4.1 million of share-based compensation cost was capitalized as real estate facilities for the year ended December 31, 2024, 2023, and 2022, respectively. 
 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Restricted Share Units and LTIP Units Activity | 
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| Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions | 
 (a)Number of performance-based awards are presented based on the target performance pursuant to the terms of each applicable award when granted and adjusted to the actual number of awards earned based on the actual performance. (b)Amount granted for performance-based awards includes 6,594 LTIP units for payout adjustments based on Total Shareholder Return modifier for awards granted in 2022. 
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| Schedule of Stock Options and AO LTIP Units Activity | Additional information with respect to stock options and AO LTIP units during 2024, 2023, and 2022 is as follows: 
 (a)Number of performance-based awards are presented based on the target performance pursuant to the terms of each applicable award when granted and adjusted to the actual number of awards earned based on the actual performance. (b)On August 4, 2022, we paid a Special Dividend of $13.15 per common share to shareholders of record as of August 1, 2022. Stock options that were outstanding at the time of the Special Dividend were adjusted pursuant to the anti-dilution provisions of the Company’s applicable equity and performance-based incentive compensation plans that provide for equitable adjustments in the event of an extraordinary cash dividend. The anti-dilution adjustments proportionately increased the number of outstanding stock options and reduced the exercise prices of outstanding stock options by a conversion rate of 1.03275, resulting in an increase of 104,348 stock options outstanding. The adjustments did not result in incremental share-based compensation expense. (c)Amount granted for performance-based stock options includes 63,257 options for payout adjustments based on Total Shareholder Return modifier for options granted in 2021. (d)Amount granted for performance-based awards includes 24,065 AO LTIP units for payout adjustments based on Total Shareholder Return for awards granted in 2022.  (e)214,996 common shares were issued upon the exercise of stock options. 186,944 vested LTIP units were issued upon conversion of 468,352 AO LTIP units in the year ended December 31, 2024. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net Income per Common Share (Tables) | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Dec. 31, 2024 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Earnings Per Share [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Net Income Per Common Share | The following table reconciles the numerators and denominators of the basic and diluted net income per common shares computation for the year ended December 31, 2024, 2023, and 2022, respectively (in thousands, except per share amounts): 
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| Segment Information (Tables) | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Dec. 31, 2024 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Segment Reporting [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Segment Information | The following table reconciles NOI and net income attributable to our reportable segment to our consolidated net income: 
 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Basis of Presentation and Summary of Significant Accounting Policies (Real Estate Facilities) (Narrative) (Details) | 12 Months Ended | 
|---|---|
| Dec. 31, 2024 | |
| Summary Of Significant Accounting Policies [Line Items] | |
| Percentage of interest in real estate sold at fair value | 100.00% | 
| Minimum | |
| Summary Of Significant Accounting Policies [Line Items] | |
| Estimated useful lives of buildings and improvements (in years) | 5 years | 
| Maximum | |
| Summary Of Significant Accounting Policies [Line Items] | |
| Estimated useful lives of buildings and improvements (in years) | 40 years | 
| Basis of Presentation and Summary of Significant Accounting Policies (Notes Receivable) (Narrative) (Details) $ in Millions | Dec. 31, 2024  USD ($)  extension | 
|---|---|
| Unfunded Loan Commitment | |
| Summary Of Significant Accounting Policies [Line Items] | |
| Other commitment | $ 12.5 | 
| Notes Receivable | |
| Summary Of Significant Accounting Policies [Line Items] | |
| Number of extensions | extension | 2 | 
| Financing receivable, extension period | 1 year | 
| Financing receivable, after allowance for credit loss | $ 10.0 | 
| Notes Receivable | Minimum | |
| Summary Of Significant Accounting Policies [Line Items] | |
| Financing receivable, term | 3 years | 
| Notes Receivable | Maximum | |
| Summary Of Significant Accounting Policies [Line Items] | |
| Financing receivable, term | 4 years | 
| Basis of Presentation and Summary of Significant Accounting Policies (Evaluation Of Asset Impairment) (Narrative) (Details) - USD ($) | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | |
| Accounting Policies [Abstract] | |||
| Goodwill and Intangible Asset Impairment | $ 0 | $ 0 | $ 0 | 
| Basis of Presentation and Summary of Significant Accounting Policies (Foreign Currency Exchange Translation) (Narrative) (Details) | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | |
| Trading Activity, Gains and Losses, Net [Line Items] | |||
| Exchange rate translation (as percent) | 1.039 | 1.104 | |
| Weighted Average | |||
| Trading Activity, Gains and Losses, Net [Line Items] | |||
| Exchange rate | 1.082 | 1.081 | 1.054 | 
| Basis of Presentation and Summary of Significant Accounting Policies (Income Taxes) (Narrative) (Details) | Dec. 31, 2024  USD ($) | 
|---|---|
| Accounting Policies [Abstract] | |
| Unrecognized tax benefits | $ 0 | 
| Investment in Unconsolidated Real Estate Entities (Schedule of Investments in Real Estate Entities and Equity in Earnings of Real Estate Entities) (Details) - USD ($) $ in Thousands | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | |
| Schedule of Equity Method Investments [Line Items] | |||
| Total | $ 19,821 | $ 27,897 | $ 106,981 | 
| Shurgard | |||
| Schedule of Equity Method Investments [Line Items] | |||
| Total | 19,821 | 27,897 | 26,385 | 
| PSB | |||
| Schedule of Equity Method Investments [Line Items] | |||
| Total | $ 0 | $ 0 | $ 80,596 | 
| Investment in Unconsolidated Real Estate Entities (Investment in PSB) (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
| Jul. 20, 2022 | Sep. 30, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | |
| Schedule of Equity Method Investments [Line Items] | |||||
| Proceeds from sale of equity investment in PS Business Parks, Inc. | $ 0 | $ 0 | $ 2,636,011 | ||
| Gain on sale of equity investment in PS Business Parks, Inc. | 0 | 0 | 2,128,860 | ||
| Cash distribution received | $ 11,039 | $ 29,333 | 134,769 | ||
| PSB | |||||
| Schedule of Equity Method Investments [Line Items] | |||||
| Ownership interest (as percent) | 41.00% | ||||
| Cash distribution received | $ 109,500 | ||||
| PSB | Blackstone Real Estate | |||||
| Schedule of Equity Method Investments [Line Items] | |||||
| Proceeds from sale of equity investment in PS Business Parks, Inc. | $ 2,700,000 | ||||
| Gain on sale of equity investment in PS Business Parks, Inc. | $ 2,100,000 | ||||
| Goodwill and Other Intangible Assets (Schedule of Intangible Assets and Goodwill) (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | 
|---|---|---|
| Indefinite-lived Intangible Assets [Line Items] | ||
| Goodwill, gross | $ 165,843 | $ 165,843 | 
| Goodwill, net | 165,843 | 165,843 | 
| Gross Book Value | 1,008,111 | 995,578 | 
| Accumulated Amortization | (910,591) | (792,978) | 
| Total | 97,520 | 202,600 | 
| Gross Book Value | 1,192,778 | 1,180,245 | 
| Net Book Value | 282,187 | 387,267 | 
| Trade Names | ||
| Indefinite-lived Intangible Assets [Line Items] | ||
| Indefinite-lived intangible assets | $ 18,824 | $ 18,824 | 
| Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | |
| Goodwill and Intangible Assets Disclosure [Abstract] | |||
| Amortization expense | $ 117.6 | $ 82.7 | $ 95.2 | 
| Increase in finite-lived intangible assets | $ 12.5 | $ 237.5 | $ 24.8 | 
| Finite-lived intangible assets, weighted average useful life (in years) | 1 year 2 months 12 days | ||
| Goodwill and Other Intangible Assets (Schedule of Finite-Lived Intangible Assets, Future Amortization Expense) (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | 
|---|---|---|
| Goodwill and Intangible Assets Disclosure [Abstract] | ||
| 2025 | $ 69,121 | |
| 2026 | 21,573 | |
| 2027 | 2,956 | |
| 2028 | 381 | |
| 2029 | 212 | |
| Thereafter | 3,277 | |
| Total | $ 97,520 | $ 202,600 | 
| Notes Payable (Schedule of Maturities of Notes Payable) (Details) $ in Thousands | Dec. 31, 2024  USD ($) | 
|---|---|
| Debt Instrument [Line Items] | |
| 2025 | $ 651,516 | 
| 2026 | 1,150,138 | 
| 2027 | 1,200,146 | 
| 2028 | 1,200,129 | 
| 2029 | 1,000,088 | 
| Thereafter | 4,203,350 | 
| Total debt | $ 9,405,367 | 
| Weighted average effective rate | 3.10% | 
| Unsecured Debt | |
| Debt Instrument [Line Items] | |
| 2025 | $ 651,385 | 
| 2026 | 1,150,000 | 
| 2027 | 1,200,000 | 
| 2028 | 1,200,000 | 
| 2029 | 1,000,000 | 
| Thereafter | 4,202,274 | 
| Total debt | $ 9,403,659 | 
| Weighted average effective rate | 3.10% | 
| Mortgage Debt | |
| Debt Instrument [Line Items] | |
| 2025 | $ 131 | 
| 2026 | 138 | 
| 2027 | 146 | 
| 2028 | 129 | 
| 2029 | 88 | 
| Thereafter | 1,076 | 
| Total debt | $ 1,708 | 
| Weighted average effective rate | 4.30% | 
| Noncontrolling Interests (Details) | Dec. 31, 2024  shares | 
|---|---|
| LTIP Units | |
| Noncontrolling Interest [Line Items] | |
| Partnership units conversion ratio | 1 | 
| Vested LTIP units outstanding (in shares) | 227,340 | 
| Trustees and Officers | |
| Noncontrolling Interest [Line Items] | |
| Ownership interest of noncontrolling owners | 0.13% | 
| Noncontrolling Interests | |
| Noncontrolling Interest [Line Items] | |
| Convertible partnership units (in shares) | 499,966 | 
| Partnership units conversion ratio | 1 | 
| Shareholders' Equity (Schedule of Activity of Issuance of Common Shares) (Details) - USD ($) $ in Thousands | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | |
| Stockholders' Equity Note [Abstract] | |||
| Employee stock-based compensation and exercise of stock options (in shares) | 280,141 | 405,059 | 283,190 | 
| Employee stock-based compensation and exercise of stock options | $ 47,411 | $ 53,386 | $ 35,405 | 
| Issuance of commons shares for cash (in shares) | 184,390 | 0 | 0 | 
| Issuance of commons shares for cash | $ 60,321 | $ 0 | $ 0 | 
| Repurchase of common shares (in shares) | (726,865) | 0 | 0 | 
| Repurchase of common shares | $ (200,000) | $ 0 | $ 0 | 
| Issuance (repurchase) of shares (in shares) | (262,334) | 405,059 | 283,190 | 
| Issuance (repurchase) of shares | $ (92,268) | $ 53,386 | $ 35,405 | 
| Shareholders' Equity (Schedule of Distribution Classification) (Details) | 3 Months Ended | |||
|---|---|---|---|---|
| Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | |
| Stockholders' Equity Note [Abstract] | ||||
| Ordinary Dividends | 100.00% | 100.00% | 100.00% | 100.00% | 
| Capital Gain Distributions | 0.00% | 0.00% | 0.00% | 0.00% | 
| Total | 100.00% | 100.00% | 100.00% | 100.00% | 
| Related Party Transactions (Details) $ in Millions | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2024  USD ($)  storage_facility  adult_children | Dec. 31, 2023  USD ($) | Dec. 31, 2022  USD ($) | |
| Related Party Transaction [Line Items] | |||
| Tenants reinsurance premiums earned by subsidiaries | $ | $ 2.2 | $ 2.1 | $ 2.2 | 
| Hughes Owned Canadian Facilities | Canada | Related Party | |||
| Related Party Transaction [Line Items] | |||
| Number of self-storage facilities | storage_facility | 66 | ||
| Number of Ms. Gustavson's adult children owning remaining equity in LLC | adult_children | 2 | ||
| Ownership interest by parent | 0.00% | ||
| Tamara Hughes Gustavson | Hughes Owned Canadian Facilities | Canada | Related Party | |||
| Related Party Transaction [Line Items] | |||
| Ownership interest of noncontrolling owners (less than) | 0.10% | ||
| Share-Based Compensation (Schedule of Share-Based Compensation Expense) (Details) - USD ($) $ in Thousands | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | |
| Share-based Payment Arrangement, Expensed, Amount [Line Items] | |||
| Share-based compensation expense | $ 44,747 | $ 41,566 | $ 56,703 | 
| Self-storage cost of operations | |||
| Share-based Payment Arrangement, Expensed, Amount [Line Items] | |||
| Share-based compensation expense | 12,128 | 13,636 | 17,950 | 
| Ancillary cost of operations | |||
| Share-based Payment Arrangement, Expensed, Amount [Line Items] | |||
| Share-based compensation expense | 1,161 | 1,289 | 888 | 
| Real estate acquisition and development expense | |||
| Share-based Payment Arrangement, Expensed, Amount [Line Items] | |||
| Share-based compensation expense | 2,750 | 1,242 | 11,204 | 
| General and administrative | |||
| Share-based Payment Arrangement, Expensed, Amount [Line Items] | |||
| Share-based compensation expense | $ 28,708 | $ 25,399 | $ 26,661 | 
| Share-Based Compensation (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | |
| Share-Based Payment Arrangement [Abstract] | |||
| Share-based compensation cost capitalized | $ 3.1 | $ 2.4 | $ 4.1 | 
| RSUs substituted by LTIP Units (in shares) | 156,632 | ||
| Stock options substituted by AO LTIP Units (in shares) | 2,238,874 | ||
| Share-Based Compensation (Trustee Deferral Program) (Narrative) (Details) - shares | 12 Months Ended | |
|---|---|---|
| Dec. 31, 2024 | Dec. 31, 2023 | |
| Deferred Stock Units (DSUs) | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Granted (in shares) | 1,836 | |
| Granted DSUs (in shares) | 871 | |
| Restricted share units outstanding (in shares) | 11,734 | 10,769 | 
| Unrestricted Common Stock | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Granted (in shares) | 434 | 
| Net Income Per Common share (Narrative) (Details) - shares | 12 Months Ended | |
|---|---|---|
| Dec. 31, 2024 | Dec. 31, 2023 | |
| Earnings Per Share [Abstract] | ||
| Antidilutive securities excluded from computation of earnings per share (in shares) | 138,739 | 375,577 | 
| Net Income per Common Share (Schedule of Net Income Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | |
| Earnings Per Share [Abstract] | |||
| Numerator for basic and dilutive net income per common share – net income allocable to common shareholders | $ 1,872,685 | $ 1,948,741 | $ 4,142,288 | 
| Denominator for basic net income per share - weighted average common shares outstanding (in shares) | 175,351 | 175,472 | 175,257 | 
| Net effect of dilutive stock options and AO LTIP units - based on treasury stock method (in shares) | 687 | 671 | 1,023 | 
| Denominator for dilutive net income per share - weighted average common shares outstanding (in shares) | 176,038 | 176,143 | 176,280 | 
| Basic (in USD per share) | $ 10.68 | $ 11.11 | $ 23.64 | 
| Diluted (in USD per share) | $ 10.64 | $ 11.06 | $ 23.50 | 
| Subsequent Events (Details) ft² in Millions, $ in Millions | 2 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
| Feb. 24, 2025  USD ($)  ft²  storage_facility  state | Dec. 31, 2024  USD ($)  ft² | Dec. 31, 2023  USD ($)  ft² | Dec. 31, 2022  USD ($)  ft² | |
| Subsequent Event [Line Items] | ||||
| Percentage of same store revenue | 0.10 | |||
| Acquisition of Self-Storage Facilities Other Investments | ||||
| Subsequent Event [Line Items] | ||||
| Net rentable area acquired (in Sq.ft) | ft² | 1.7 | 2.7 | 4.7 | |
| Total cost of acquisition | $ | $ 267.5 | $ 473.2 | $ 730.5 | |
| Acquisition of Self-Storage Facilities Other Investments | Subsequent Event | ||||
| Subsequent Event [Line Items] | ||||
| Number of self-storage facilities acquired | storage_facility | 9 | |||
| Number of states self-storage facilities acquired or under contracts to be acquired | state | 6 | |||
| Net rentable area acquired (in Sq.ft) | ft² | 0.7 | |||
| Total cost of acquisition | $ | $ 140.7 | |||