ALCON INC, 6-K filed on 8/19/2025
Report of Foreign Issuer
v3.25.2
Cover
6 Months Ended
Jun. 30, 2025
Cover [Abstract]  
Document Type 6-K
Entity File Number 001-31269
Entity Registrant Name ALCON INC.
Entity Address, Address Line One Rue Louis-d'Affry 6
Entity Address, Address Line Two 1701
Entity Address, City or Town Fribourg
Entity Address, Country CH
Document Period End Date Jun. 30, 2025
Entity Central Index Key 0001167379
Current Fiscal Year End Date --12-31
Amendment Flag false
Document Fiscal Year Focus 2025
Document Fiscal Period Focus Q2
v3.25.2
Consolidated Income Statement (unaudited) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Profit or loss [abstract]        
Net sales $ 2,577 $ 2,482 $ 5,028 $ 4,926
Other revenues 19 14 41 29
Net sales and other revenues 2,596 2,496 5,069 4,955
Cost of net sales (1,196) (1,108) (2,267) (2,171)
Cost of other revenues (12) (14) (31) (28)
Gross profit 1,388 1,374 2,771 2,756
Selling, general & administration (870) (837) (1,683) (1,639)
Research & development (245) (220) (467) (419)
Other income 5 5 154 11
Other expense (31) (4) (60) (23)
Operating income 247 318 715 686
Interest expense (51) (50) (100) (95)
Other financial income & expense 4 12 13 24
Share of (loss) from associated companies (1) 0 (15) 0
Income before taxes 199 280 613 615
Taxes (23) (57) (87) (144)
Net income 176 223 526 471
Net income attributable to:        
Shareholders of Alcon Inc. 176 223 526 471
Non-controlling interests $ 0 $ 0 $ 0 $ 0
Earnings per share        
Basic (in dollars per share) [1] $ 0.36 $ 0.45 $ 1.06 $ 0.95
Diluted (in dollars per share) [1] $ 0.35 $ 0.45 $ 1.06 $ 0.95
Weighted average number of shares outstanding        
Basic (in shares) 495.2 494.5 495.2 494.1
Diluted (in shares) 497.9 497.0 497.9 496.7
[1] Earnings per share is calculated on the amount of net income attributable to shareholders of Alcon Inc.
v3.25.2
Consolidated Statement of Comprehensive Income (unaudited) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Statement of comprehensive income [abstract]        
Net income $ 176 $ 223 $ 526 $ 471
Other comprehensive income to be eventually recycled into the Consolidated Income Statement:        
Currency translation effects, net of taxes [1] 141 (22) 194 (74)
Total of items to eventually recycle 141 (22) 194 (74)
Other comprehensive income never to be recycled into the Consolidated Income Statement:        
Actuarial gains/(losses) from defined benefit plans, net of taxes [2] (3) 5 5 19
Fair value adjustments on equity securities, net of taxes [3] 51 4 63 5
Total of items never to be recycled 48 9 68 24
Total comprehensive income 365 210 788 421
Total comprehensive income for the period attributable to:        
Shareholders of Alcon Inc. 365 210 788 421
Non-controlling interests $ 0 $ 0 $ 0 $ 0
[1] Amounts are net of tax expense of $2 million and $1 million for the three months ended June 30, 2025 and 2024, respectively. Amounts are net of tax expense of $3 million and $0.5 million for the six months ended June 30, 2025 and 2024, respectively.
[2] Amount is net of tax benefit of $0.6 million for the three months ended June 30, 2025. Amount is net of tax expense of $2 million for the three months ended June 30, 2024. Amounts are net of tax expense of $1 million and $6 million for the six months ended June 30, 2025 and 2024, respectively.
[3] Amounts are net of tax expense of $8 million and $0.9 million for the three months ended June 30, 2025 and 2024, respectively. Amounts are net of tax expense of $10 million and $1 million for the six months ended June 30, 2025 and 2024, respectively.
v3.25.2
Consolidated Statement of Comprehensive Income (unaudited) (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Statement of comprehensive income [abstract]        
Currency translation effects, tax expense $ 2.0 $ 1.0 $ 3.0 $ 0.5
Actuarial gains/(losses) from defined benefit plans, tax expense (benefit) (0.6) 2.0 1.0 6.0
Fair value adjustments on equity securities, tax expense $ 8.0 $ 0.9 $ 10.0 $ 1.0
v3.25.2
Consolidated Balance Sheet (unaudited) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Non-current assets    
Property, plant & equipment $ 4,612 $ 4,389
Right-of-use assets 463 449
Goodwill 9,181 8,946
Intangible assets other than goodwill 9,195 8,587
Deferred tax assets 470 421
Financial assets 763 652
Other non-current assets 397 594
Total non-current assets 25,081 24,038
Current assets    
Inventories 2,394 2,268
Trade receivables 1,992 1,736
Income tax receivables 23 23
Cash and cash equivalents 1,408 1,676
Time deposits 0 153
Other current assets 489 453
Total current assets 6,306 6,309
Total assets 31,387 30,347
Equity    
Share capital 20 20
Reserves 22,094 21,533
Equity attributable to shareholders of Alcon Inc. 22,114 21,553
Non-controlling interests 16 0
Total equity 22,130 21,553
Non-current liabilities    
Financial debts 4,664 4,538
Lease liabilities 440 429
Deferred tax liabilities 857 724
Provisions & other non-current liabilities 872 825
Total non-current liabilities 6,833 6,516
Current liabilities    
Trade payables 895 773
Financial debts 81 105
Lease liabilities 76 68
Current income tax liabilities 215 104
Provisions & other current liabilities 1,157 1,228
Total current liabilities 2,424 2,278
Total liabilities 9,257 8,794
Total equity and liabilities $ 31,387 $ 30,347
v3.25.2
Consolidated Statement of Changes in Equity (unaudited) - USD ($)
$ in Millions
Total
Total
Share capital
Other reserves
Fair value adjustments on equity investments
Actuarial gains from defined benefit plans
Cumulative currency translation effects
Total value adjustments
[1]
Non-controlling interests
Beginning balance at Dec. 31, 2023 $ 20,624   $ 20 $ 20,624 $ (32) $ 37 $ (25) $ (20)  
Net income 471     471          
Other comprehensive income/(loss) (50)       5 19 (74) (50)  
Total comprehensive income 421     471 5 19 (74) (50)  
Dividends (131)     (131)          
Equity-based compensation 29     29          
Other movements [2] (2)     (2)          
Total other movements (104)     (104)          
Ending balance at Jun. 30, 2024 20,941   20 20,991 (27) 56 (99) (70)  
Beginning balance at Dec. 31, 2024 21,553 $ 21,553 20 21,688 (65) 51 (141) (155) $ 0 [2]
Net income 526 526   526          
Other comprehensive income/(loss) 262 262     63 5 194 262  
Total comprehensive income 788 788   526 63 5 194 262  
Dividends (168) (168)   (168)          
Acquisition of treasury shares (121) (121)   (121)          
Equity-based compensation 40 40   40          
Initial recognition of non-controlling interests 27               27
Changes in non-controlling interests (11)               (11)
Other movements [2] 22 22   24 (2)     (2)  
Total other movements (211) (227)   (225) (2)     (2) 16
Ending balance at Jun. 30, 2025 $ 22,130 $ 22,114 $ 20 $ 21,989 $ (4) $ 56 $ 53 $ 105 $ 16 [2]
[1] "Total value adjustments" are presented net of the corresponding tax effects.
[2] Activity includes hyperinflationary accounting. For the six months ended June 30, 2025, Other reserves also includes the reversal of previously-recognized deferred tax and a reclassification related to the settlement of an equity investment.
v3.25.2
Consolidated Statement of Cash Flows (unaudited) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Statement of cash flows [abstract]    
Net income $ 526 $ 471
Adjustments to reconcile net income to net cash flows from operating activities    
Depreciation, amortization, impairments and fair value adjustments 529 606
Equity-based compensation expense 77 77
Non-cash change in current and non-current provisions and other non-current liabilities 44 33
Losses on disposal and other adjustments on property, plant & equipment and other non-current assets, net 2 3
Interest expense 100 95
Other financial income & expense (13) (24)
Share of loss from associated companies 15 0
Taxes 87 144
Interest received 37 31
Interest paid (101) (99)
Other financial payments (4) (5)
Taxes paid (52) (87)
Net cash flows before working capital changes and net payments out of provisions and other non-current liabilities 1,247 1,245
Net payments out of provisions and other cash movements in non-current liabilities (32) (58)
Change in net current assets and other operating cash flow items (326) (316)
Net cash flows from operating activities 889 871
Purchase of property, plant & equipment (208) (204)
Purchase of intangible assets (65) (59)
Purchase of investments in associated companies (8) 0
Payments for financial assets (24) (97)
Proceeds from time deposits 150 0
Proceeds from financial assets 1 9
Acquisitions of businesses, net of cash acquired (568) 0
Other investing cash flows (10) 0
Net cash flows used in investing activities (732) (351)
Dividends paid to shareholders of Alcon Inc. (166) (130)
Repayment of financial debts (102) (47)
Proceeds from financial debts, net of issuance costs 49 39
Other net changes in financial debts 39 (7)
Payments for acquisition of treasury shares (116) 0
Lease payments (38) (43)
Payment of withholding taxes related to equity-based compensation (43) (42)
Transactions with non-controlling interests (11) 0
Other financing cash flows (91) (7)
Net cash flows used in financing activities (479) (237)
Effect of exchange rate changes on cash and cash equivalents 54 (5)
Net change in cash and cash equivalents (268) 278
Cash and cash equivalents at January 1 1,676 1,094
Cash and cash equivalents at June 30 $ 1,408 $ 1,372
v3.25.2
Selected accounting policies
6 Months Ended
Jun. 30, 2025
Corporate information and statement of IFRS compliance [abstract]  
Selected accounting policies Selected accounting policies
Basis of preparation
These Condensed Consolidated Interim Financial Statements for Alcon Inc. ("the Company") and the subsidiaries it controls (collectively, "Alcon") have been prepared in accordance with International Accounting Standard 34, Interim Financial Reporting, as issued by the International Accounting Standards Board ("IASB") and with the accounting policies as described in Note 2 to the December 31, 2024 Consolidated Financial Statements in the Company’s 2024 Form 20-F ("Form 20-F").
These Condensed Consolidated Interim Financial Statements do not include all of the information required for a complete set of International Financial Reporting Standards ("IFRS") financial statements. The financial information consolidates the Company and the subsidiaries it controls, and includes selected notes to explain events and transactions that are significant to an understanding of the changes in Alcon's financial position and performance since the prior annual Consolidated Financial Statements. For non-wholly owned subsidiaries, non-controlling interests are recognized to reflect the portion of equity that is not attributable, directly or indirectly, to Alcon. The Condensed Consolidated Interim Financial Statements should be read in conjunction with the annual Consolidated Financial Statements for the year ended December 31, 2024, which have been prepared in accordance with IFRS as issued by the IASB ("IFRS Accounting Standards") and can be found in the Form 20-F.
The accompanying Condensed Consolidated Interim Financial Statements present our historical financial position, results of operations, comprehensive income and cash flows in accordance with IFRS Accounting Standards. Alcon's principal accounting policies are set out in Note 2 to the Consolidated Financial Statements in the Form 20-F.
Use of estimates and assumptions
The preparation of Condensed Consolidated Interim Financial Statements requires management to make certain estimates and assumptions, either at the balance sheet date or during the period, that affect the reported amounts of assets and liabilities as well as revenues and expenses. Because of the inherent uncertainties, actual outcomes and results may differ from management's assumptions and estimates.
Business combinations
The business combinations accounting policy was expanded in 2025 to include business combinations achieved in stages and non-controlling interests, as follows:
If the business combination is achieved in stages, the acquisition date carrying value of Alcon’s previously held equity interest in the acquiree is remeasured to fair value at the acquisition date. Any gains or losses arising from such remeasurement are recognized in Other income or Other expense, respectively, in the Consolidated Income Statement.
Alcon recognizes non-controlling interests in the acquired entity on an acquisition-by-acquisition basis, either at fair value or at the non-controlling interests' proportionate share of the acquired entity’s net identifiable assets. This decision is made on an acquisition-by-acquisition basis.
Treasury shares
The accounting policies were expanded in 2025 to include treasury shares acquired in repurchases, as follows:
Common shares repurchased, which are measured at fair value on their trade date and include transaction costs directly attributable to the repurchase, are held in treasury and deducted from equity. No gains or losses are recognized in the Consolidated Income Statement on the purchase or issuance of such shares. Payments for the acquisition of treasury shares are recorded in Financing activities in the Consolidated Statement of Cash Flows.
Treasury share repurchases denominated in a currency other than the reporting currency are valued at the trade date using the spot exchange rate for the reporting currency. Any realized foreign exchange gains or losses arising between the trade date and settlement date is recognized in Other financial income & expense in the Consolidated Income Statement. If the trade date by the broker or bank and settlement date of the repurchase by the Company fall in different reporting periods, an accrued liability is recognized at period-end for the settlement obligation in Provisions & other current liabilities on the Consolidated Balance Sheet.
Impairment of goodwill, Alcon brand name and definite lived intangible assets
As discussed in Note 2 to the Consolidated Financial Statements in the Form 20-F, Goodwill, the Alcon brand name and acquired in-process research & development ("IPR&D") projects are reviewed for impairment at least annually and these, as well as all other investments in intangible assets, are reviewed for impairment whenever events or changes in circumstance indicate that the asset's balance sheet or reportable segment carrying amount may not be recoverable. Goodwill and other intangible assets represent a significant amount of total assets on the Consolidated Balance Sheet. Impairment testing may lead to potentially significant impairment charges in the future, which could have a materially adverse impact on Alcon's results of operations and financial condition.
New standards and interpretations not yet adopted
In April 2024, the IASB issued IFRS 18, Presentation and Disclosure in Financial Statements, which will replace IAS 1, Presentation of Financial Statements and accompanies limited amendments to other standards which will be effective upon the adoption of the new standard. IFRS 18 will be retroactively effective for our annual reporting periods beginning on January 1, 2027, with early adoption permitted. The standard is expected to improve comparability and transparency of financial statements by requiring defined subtotals in the Consolidated Income Statement, requiring disclosure of management-defined performance measures and adding new principles for aggregation and disaggregation of information. Alcon is currently evaluating the impact of this standard on its Consolidated Financial Statements.
Other than previously described, as of June 30, 2025 there are no IFRS Accounting Standards, interpretations or amendments not yet effective that would be expected to have a material impact on Alcon upon adoption.
v3.25.2
Significant transactions
6 Months Ended
Jun. 30, 2025
Significant Transactions [Abstract]  
Significant transactions Significant transactions
Significant transactions in 2025
Vision Care - Acquisition of majority interest in Aurion Biotech, Inc.
On March 24, 2025, Alcon closed on agreements with certain existing shareholders of Aurion Biotech, Inc. ("Aurion") to acquire approximately 58.7% of outstanding equity for approximately $486 million and outstanding convertible notes from the same shareholders for approximately $36 million, totaling $522 million cash paid at closing. When combined with Alcon's existing 40.3% investment in Aurion, the transaction resulted in 99% ownership of Aurion on an outstanding basis. Aurion's ownership on a fully diluted basis at closing was approximately 85.0% held by Alcon and 15.0% held by non-controlling interests. This transaction supports Alcon's ophthalmic pharmaceutical portfolio expansion, including biopharmaceutical applications, with the potential to advance the first-ever corneal cell therapy candidate. The acquisition of majority interest was accounted for as a business combination that resulted in goodwill of $140 million after the preliminary purchase price allocation ("PPA") of the consideration to the fair values of acquired assets and assumed liabilities. The fair values of the acquired assets and assumed liabilities are provisional primarily due to pending final measurement of the non-controlling interests and valuation of acquired tax attributes. Total cash paid at closing, net of cash acquired, was $496 million. Refer to Note 11 for additional information, including preliminary PPA and details related to the associated non-controlling interests.
Surgical - Acquisition of Cylite Pty Ltd.
On January 16, 2025, Alcon executed a stock purchase agreement and acquired approximately 91.2% of outstanding equity from Cylite Pty Ltd. ("Cylite") shareholders, resulting in 100% ownership when combined with Alcon's existing 8.8% investment in Cylite. The Cylite diagnostic device complements Alcon’s existing Surgical portfolio for cataracts. The acquisition of the remaining equity interest was accounted for as a business combination that resulted in goodwill of $90 million after the preliminary PPA of the consideration to the fair values of acquired assets and assumed liabilities. The fair value of the assets acquired and liabilities assumed for the acquisition were based on preliminary calculations and valuations, and the estimates and assumptions for this acquisition are subject to change as additional information is obtained during the respective measurement period up to one year from the acquisition date. Total cash paid at closing, net of cash acquired, was $72 million. Refer to Note 11 for additional information and preliminary PPA.
Significant transactions in 2024
Divestment of product rights and out-licensing in China
On October 17, 2024, Alcon closed on a set of definitive agreements to divest its rights in China in favor of Ocumension Therapeutics (Hong Kong) Limited (“Ocumension”) to Bion Tears and Tears Naturale (reported in Vision Care segment) and procedural eye drops (reported in Surgical segment). Under the terms of the agreements, Ocumension licensed the exclusive commercialization rights to Systane Ultra in China and development and commercialization rights to AR-15512 in China. In exchange, Alcon received up-front consideration of $116 million in the form of approximately 16.7% of the ordinary shares of Ocumension. Alcon will also receive royalties and defined AR-15512 sales milestones.
Surgical - Acquisition of BELKIN Vision Ltd.
On July 1, 2024, Alcon acquired 100% of the outstanding shares and equity of BELKIN Vision Ltd. ("BELKIN") as provided under the Agreement and Plan of Merger. This transaction complements Alcon’s existing Surgical portfolio in the treatment of glaucoma. The acquisition was accounted for as a business combination that resulted in goodwill of $20 million after the PPA of the consideration to the fair values of acquired assets and assumed liabilities. Total cash paid at closing for the net identifiable assets recognized, net of cash acquired, was $61 million.
v3.25.2
Segmentation of key figures
6 Months Ended
Jun. 30, 2025
Operating Segments [Abstract]  
Segmentation of key figures Segmentation of key figures
The segment information disclosed in these Condensed Consolidated Interim Financial Statements reflects historical results consistent with the identifiable reportable segments of Alcon and financial information that the Chief Operating Decision Maker ("CODM") reviews to evaluate segmental performance and allocate resources among the segments. The CODM is the Executive Committee of Alcon.
The businesses of Alcon are divided operationally on a worldwide basis into two identified reportable segments, Surgical and Vision Care. Alcon's reportable segments are the same as its operating segments as Alcon does not aggregate any operating segments in arriving at its reportable segments. As indicated below, certain income and expenses are not allocated to segments.
Reportable segments are presented in a manner consistent with the internal reporting to the CODM. The reportable segments are managed separately due to their distinct needs and activities for research, development, manufacturing, distribution and commercial execution.
The Executive Committee of Alcon is responsible for allocating resources and assessing the performance of the reportable segments.
In Surgical, Alcon researches, develops, manufactures, distributes and sells ophthalmic products for cataract surgery, vitreoretinal surgery, refractive laser surgery and glaucoma surgery. The surgical portfolio also includes implantables, consumables and surgical equipment required for these procedures and supports the end-to-end procedure needs of the ophthalmic surgeon.
In Vision Care, Alcon researches, develops, manufactures, distributes and sells daily disposable, reusable, and color-enhancing contact lenses, cell therapies to treat ocular diseases and a comprehensive portfolio of ocular health products, including products for dry eye, ocular allergies, glaucoma and contact lens care, as well as ocular vitamins and redness relievers.
Alcon also provides services, training, education and technical support for both the Surgical and Vision Care businesses.
The basis of preparation and the selected accounting policies mentioned in Note 1 are used in the reporting of segment results.
The Executive Committee of Alcon evaluates segmental performance and allocates resources among the segments based on net sales and segment contribution, which is the single measure of segment profitability.
Net identifiable assets are not assigned to the segments in the internal reporting to the CODM, and are not considered in evaluating the performance of the business segments by the Executive Committee of Alcon.
Segment contribution excludes amortization and impairment charges for acquired product rights or other intangibles, general and administrative expenses for corporate activities, fair value adjustments to contingent consideration liabilities, past service costs primarily for post-employment benefit plan amendments, acquisition and integration related costs, certain acquisition and divestment related items, product discontinuation costs, fair value adjustments of financial assets in the form of options to acquire a company carried at fair value through profit and loss ("FVPL"), net gains and losses on fund investments and equity securities valued at FVPL, fair value remeasurements of investments in associated companies, restructuring costs, legal provisions and settlements and other income and expense items not attributed to a specific segment.
Net sales and other revenues by segment
Three months ended June 30Six months ended June 30
($ millions)2025202420252024
Surgical
Implantables456 464 876 897 
Consumables777 736 1,489 1,422 
Equipment/other222 223 421 442 
Total Surgical net sales1,455 1,423 2,786 2,761 
Vision Care
Contact lenses692 636 1,380 1,307 
Ocular health430 423 862 858 
Total Vision Care net sales1,122 1,059 2,242 2,165 
Total net sales2,577 2,482 5,028 4,926 
Surgical other revenues— — — 
Vision Care other revenues
19 14 40 29 
Total other revenues19 14 41 29 
Total net sales and other revenues2,596 2,496 5,0694,955 
Segment contribution and reconciliation to income before taxes
The below tables summarize segment contribution, including material items of income and expense as required by IFRS 8, Operating Segments, and the associated IFRIC agenda decision published in July 2024. The below tables also include a reconciliation of segment contribution to Income before taxes.
SurgicalVision CareNot allocated to segmentsTotal
Three months ended June 30
Three months ended June 30
Three months ended June 30
Three months ended June 30
($ millions)20252024202520242025202420252024
Net sales1,455 1,423 1,122 1,059   2,577 2,482 
Other revenues— — 19 14 — — 19 14 
Cost of net sales(553)(510)(416)(422)(227)(176)(1,196)(1,108)
Cost of other revenues— — (12)(14)— — (12)(14)
Selling, general & administration(372)(368)(415)(390)(83)(79)(870)(837)
Research & development(152)(142)(90)(67)(3)(11)(245)(220)
Other income— — — — 
Other expense— — — — (31)(4)(31)(4)
Segment contribution and Operating income378 403 208 180 (339)(265)247 318 
Interest expense(51)(50)(51)(50)
Other financial income & expense12 12 
Share of (loss) from associated companies(1)— (1)— 
Income before taxes199 280 
SurgicalVision CareNot allocated to segmentsTotal
Six months ended June 30
Six months ended June 30
Six months ended June 30
Six months ended June 30
($ millions)20252024202520242025202420252024
Net sales2,786 2,761 2,242 2,165   5,028 4,926 
Other revenues— 40 29 — — 41 29 
Cost of net sales(1,049)(980)(813)(838)(405)(353)(2,267)(2,171)
Cost of other revenues(1)— (30)(28)— — (31)(28)
Selling, general & administration(728)(720)(788)(758)(167)(161)(1,683)(1,639)
Research & development(295)(272)(162)(132)(10)(15)(467)(419)
Other income— — — — 154 11 154 11 
Other expense— — — — (60)(23)(60)(23)
Segment contribution and Operating income714 789 489 438 (488)(541)715 686 
Interest expense(100)(95)(100)(95)
Other financial income & expense13 24 13 24 
Share of (loss) from associated companies(15)— (15)— 
Income before taxes613 615 
Net sales by region(1)
Three months ended June 30Six months ended June 30
($ millions unless indicated otherwise)2025202420252024
United States1,160 45 %1,141 46 %2,297 46 %2,290 46 %
International1,417 55 %1,341 54 %2,731 54 %2,636 54 %
Net sales2,577 100 %2,482 100 %5,028 100 %4,926 100 %
(1)     Net sales by location of third-party customer.
v3.25.2
Dividends, earnings per share and share repurchase program
6 Months Ended
Jun. 30, 2025
Earnings per share [abstract]  
Dividends, earnings per share and share repurchase program Dividends, earnings per share and share repurchase program
Dividends
On February 25, 2025, the Company's Board of Directors (the "Board") proposed a dividend of CHF 0.28 per share, which was subsequently approved by the shareholders at the Annual General Meeting on May 6, 2025 and paid in May 2025 for an amount of $166 million.
On February 27, 2024, the Board proposed a dividend of CHF 0.24 per share, which was subsequently approved by the shareholders at the Annual General Meeting on May 8, 2024 and paid in May 2024 for an amount of $130 million.
Earnings per share
As of June 30, 2025, there were 494.4 million outstanding common shares after repurchases of 1.4 million common shares, partially offset by the delivery of 1.1 million net shares vesting under the equity incentive programs during the six months ended June 30, 2025.
Basic earnings per share is computed by dividing net income attributable to shareholders of Alcon Inc. for the period by the weighted average number of common shares outstanding during the period. For the three and six months ended June 30, 2025, the weighted average number of shares outstanding was 495.2 million. For the three and six months ended June 30, 2024, the weighted average number of shares outstanding was 494.5 million and 494.1 million, respectively.
The only potentially dilutive securities are the outstanding unvested equity-based awards, as described in Note 9. Except when the effect would be anti-dilutive, the calculation of diluted earnings per common share includes the weighted average net impact of unvested equity-based awards. For the three and six months ended June 30, 2025, the weighted average diluted number of shares outstanding was 497.9 million, which includes the potential conversion of 2.7 million unvested equity-based awards. For the three and six months ended June 30, 2024, the weighted average diluted number of shares outstanding was 497.0 million and 496.7 million, respectively, which includes the potential conversion of 2.5 million and 2.6 million unvested equity-based awards, respectively.
Share repurchase program
On February 25, 2025, the Board authorized the repurchase of up to $750 million of the Company’s common shares. The shares acquired are held in treasury and are intended to offset the dilutive effect of shares vesting under Alcon's equity-based incentive plans. Alcon expects to fund the repurchases through cash generated from operations. The program is authorized by the Swiss Takeover Board and subject to customary safe harbor conditions. The timing and total amount of share repurchases will depend upon a variety of factors. The share repurchase program is expected to be completed over a three year period but may be suspended or discontinued at any time.
On March 27, 2025, the Company executed an agreement with a bank to set the terms on which the bank will execute the share repurchases as the Company's agent. The agreement with the bank is cancellable at any time without continuing obligation such that no financial liability exists to the Company from execution of the agreement or the approval of the program. As of June 30, 2025, 1.4 million shares were repurchased for a total consideration of $121 million. Total cash payments for acquisition of treasury shares of $116 million were recorded to "Payments for acquisition of treasury shares" within the financing section of the Consolidated Statement of Cash Flows. Liabilities of $5 million were recorded to "Provisions & other current liabilities" on the Condensed Consolidated Balance Sheet for share repurchases which were initiated but not settled as of June 30, 2025.
v3.25.2
Intangible assets other than goodwill
6 Months Ended
Jun. 30, 2025
Disclosure of detailed information about intangible assets [abstract]  
Intangible assets other than goodwill Intangible assets other than goodwill
Intangible asset impairment charges
Impairment charges during the three months and six months ended June 30, 2025 amounted to $43 million recognized in Cost of net sales in the Condensed Consolidated Income Statement due to the full impairment of a currently marketed product cash generating unit ("CGU") in the Vision Care reportable segment due to discontinuation of commercialization of the product.
Impairment charges during the three months and six months ended June 30, 2024 amounted to $9 million recognized in Research & development in the Condensed Consolidated Income Statement due to the full impairment of an acquired IPR&D CGU in the Surgical reportable segment due to discontinuation of the project.
v3.25.2
Non-current and current financial debts
6 Months Ended
Jun. 30, 2025
Disclosure Of Borrowings [Abstract]  
Non-current and current financial debts Non-current and current financial debts
The below table summarizes non-current and current Financial debts outstanding as of June 30, 2025 and December 31, 2024.
($ millions)June 30, 2025December 31, 2024
Non-current financial debts
Local facilities (Japan), floating rate debt due 2028
57 — 
2.750% Series 2026 Notes
499 499 
2.375% Series 2028 Notes
584 517 
3.000% Series 2029 Notes
996 995 
2.600% Series 2030 Notes
747 746 
5.375% Series 2032 Notes
694 694 
3.800% Series 2049 Notes
495 495 
5.750% Series 2052 Notes
592 592 
Revolving facility, floating rate due 2029
— — 
Total non-current financial debts4,664 4,538 
Current financial debts
Local facilities, floating rate:
Japan
— 26 
All others61 67 
Other short-term financial debts, floating rate10 
Derivatives10 
Total current financial debts81 105 
Total financial debts4,745 4,643 
Interest expense recognized for Financial debts, excluding lease liabilities, was $43 million and $84 million for the three and six months ended June 30, 2025, respectively, and $43 million and $83 million for the three and six months ended June 30, 2024, respectively.
Revolving credit facility
The $1.32 billion Revolving Credit Facility remained undrawn as of June 30, 2025.
Local bilateral facilities
On January 20, 2025, three local bilateral facilities in Japan which were set to mature in February 2025 were refinanced by two facilities with three year maturities totaling $64 million (JPY 10 billion) using the FX rate as of January 20, 2025. Of that amount, $57 million was drawn as of June 30, 2025. The two local bilateral facilities are guaranteed by the Company.
v3.25.2
Financial instruments
6 Months Ended
Jun. 30, 2025
Financial Instruments [Abstract]  
Financial instruments Financial instruments
Fair value by hierarchy
As required by IFRS, financial assets and liabilities recorded at fair value in the Condensed Consolidated Interim Financial Statements are categorized based upon the level of judgment associated with the inputs used to measure their fair value. There are three hierarchical levels, based on an increasing amount of judgment associated with the inputs to derive fair value for these financial assets and liabilities, which are as follows:
Financial assets and liabilities carried at Level 1 fair value hierarchy are listed in active markets.
Financial assets and liabilities carried at Level 2 fair value hierarchy are valued using corroborated market data.
Level 1 financial assets include money market funds, equity securities in public companies and deferred compensation assets. There were no financial liabilities carried at Level 1 fair value, and Level 2 financial assets and liabilities include derivative financial instruments.
Investments in money market funds and equity securities in public companies are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices. Investments in money market funds are classified as Cash & cash equivalents within the Condensed Consolidated Balance Sheet.
Deferred compensation investments for certain employee benefit plans are held in a rabbi trust and dedicated to pay the benefits under the associated plans but are not considered plan assets as the assets remain available to creditors of Alcon in certain events, including bankruptcy. Rabbi trust assets primarily consist of investments in mutual funds. These assets are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices.
Level 3 inputs are unobservable for the financial asset or liability. Fair value measurements classified as Level 3 are performed primarily using the income approach or market approach. The financial assets and liabilities generally included in the Level 3 fair value hierarchy are equity securities and convertible notes receivable of private companies measured at fair value through other comprehensive income ("FVOCI"), fund investments, options to acquire private companies, and contingent consideration liabilities measured at FVPL.
The below table summarizes financial assets and liabilities measured at fair value on a recurring basis as of June 30, 2025 and December 31, 2024.
June 30, 2025
December 31, 2024
($ millions)Level 1Level 2Level 3TotalLevel 1Level 2Level 3Total
Non-current financial assets
Long-term financial investments measured at FVOCI(1)
188 — 171 359 81 — 201 282 
Long-term financial investments measured at FVPL— — 1 — — 1 
Deferred compensation assets(2)
188 — — 188 180 — — 180 
Non-current financial assets at fair value376  172 548 261  202 463 
Current financial assets
Money market funds690 — — 690 432 — — 432 
Current portion of long-term financial investments measured at FVPL(3)
— — 2 — — 1 
Derivative financial instruments(3)
— — 7 — 12 — 12 
Current financial assets at fair value690 7 2 699 432 12 1 445 
Financial assets at fair value1,066 7 174 1,247 693 12 203 908 
Financial liabilities
Contingent consideration liabilities— — (110)(110)— — (96)(96)
Derivative financial instruments
— (10)— (10)— (4)— (4)
Financial liabilities at fair value (10)(110)(120) (4)(96)(100)
(1)    As of December 31, 2024, included $11 million of Long-term convertible notes due from associated companies.
(2)    Recorded in Other non-current assets.
(3)    Recorded in Other current assets.
There were no transfers of financial assets or liabilities between levels in the fair value hierarchy during the six months ended June 30, 2025.
The carrying amount is a reasonable approximation of fair value for all other financial instruments as of June 30, 2025 and December 31, 2024, with the exception of the Series 2026, 2028, 2029, 2030, 2032, 2049 and 2052 Notes ("Notes") recorded in Non-current financial debt. As of June 30, 2025, the Notes had a fair value of $4,392 million and a carrying value of $4,607 million. As of December 31, 2024, the Notes had a fair value of $4,240 million and a carrying value of $4,538 million. The fair value of the Notes was determined using Level 2 inputs. The Notes were valued using the quoted market price for such Notes, which have low trading volumes.
Level 3 financial instruments measured at fair value on a recurring basis
Financial assets
Long-term financial investments measured
at FVOCI
Financial investments
measured at FVPL
($ millions)2025202420252024
Balance as of January 1201 147 2 8 
Additions15 90 — 
Net (losses)/gains recognized in Consolidated Statement of Comprehensive Income(34)— — 
Net gains recognized in Consolidated Income Statement— — — 
Amortization— — (1)(2)
Settlements(11)— — (5)
Balance as of June 30171 243 3 3 
Financial liabilities
Contingent consideration liabilities
($ millions)20252024
Balance as of January 1(96)(90)
Additions(9)— 
Accretion for passage of time(5)(4)
Balance as of June 30(110)(94)
Additions to contingent consideration liabilities in the current year period relate to the Cylite acquisition. Refer to Note 11 for additional information.
As of June 30, 2025, the probability of success for various development and commercial milestones ranges from 0% to 95% and the maximum remaining potential payments related to contingent consideration from business combinations is $790 million, plus other amounts calculated as a percentage of commercial sales in cases where there is not a specified maximum contractual payment amount. The estimation of probability typically depends on factors such as technical milestones or market performance and is adjusted for the probability of payment. If material, probable payments are appropriately discounted to reflect the impact of time.
Contingent consideration liabilities are reported in “Provisions & other non-current liabilities" based on the projected timing of settlement which is estimated to range from late 2026 through 2036 for contingent consideration obligations as of June 30, 2025.
Long-term note receivable and other financial assets measured at amortized cost
As described in Note 17 to the Consolidated Financial Statements in the Form 20-F, on May 22, 2023, Alcon entered into financing arrangements with a long-term supplier, Lifecore Biomedical, Inc. and certain of its affiliates (collectively, “Lifecore”) resulting in financial assets which Alcon concluded were originated credit-impaired. The maximum exposure to credit risk is reflected in the carrying value of the assets, which amounted to $184 million as of June 30, 2025, including a non-current portion of $183 million in Financial assets and a current portion of $1 million in Other current assets. As of June 30, 2025, in accordance with the terms of the Pledge and Security agreement (“security agreement”), the credit risk exposure is fully mitigated by the collateral, with an estimated amount of approximately $385 million. The estimated amount of collateral increased approximately 20% from December 31, 2024 based on updated forecasts reflecting recent market data and discounted cash flow analysis. There have been no significant changes in the quality of the collateral, the terms of the signed security agreement or the credit monitoring procedures described in Note 17 to the Consolidated Financial Statements in the Form 20-F. In addition, as of June 30, 2025, Alcon assessed there was no lifetime expected credit loss due to the value of the collateral under the security agreement.
Derivatives
The below table summarizes the net value of unsettled positions for currency derivatives contracts including swaps, forwards and options as of June 30, 2025 and December 31, 2024.
($ millions)June 30, 2025December 31, 2024
Unrealized gains in Other current assets
12 
Unrealized losses in Current financial debts
(10)(4)
Net value of unsettled positions for derivatives contracts
(3)8 
There are master agreements with several banking counterparties for derivative financial instruments; however, there were no derivative financial instruments meeting the offsetting criteria under IFRS as of June 30, 2025 or December 31, 2024.
Nature and extent of risks arising from financial instruments
Note 17 to the Consolidated Financial Statements in the Form 20-F contains a summary of the nature and extent of risks arising from financial instruments. There have been no significant updates to our assessment of the nature and extent of risks arising from financial instruments or corresponding risk management policies during the period.
v3.25.2
Condensed Consolidated Statements of Cash Flows - additional details
6 Months Ended
Jun. 30, 2025
Cash Flow Statement [Abstract]  
Condensed Consolidated Statements of Cash Flows - additional details Condensed Consolidated Statement of Cash Flows - additional details
The below tables provide additional detail supporting select line items in the Condensed Consolidated Statement of Cash Flows.
8.1     Depreciation, amortization, impairments and fair value adjustments
Six months ended June 30
($ millions)20252024
Property, plant & equipment201 191 
Right-of-use assets43 40 
Intangible assets428 376 
Other non-current assets(1)
(143)(1)
Total529 606 
(1)    For the six months ended June 30, 2025, Other non-current assets includes gains on fair value remeasurements of investments in associated companies. Refer to Note 11 for additional information.
8.2     Change in net current assets and other operating cash flow items
Six months ended June 30
($ millions)20252024
(Increase) in inventories(107)(71)
(Increase) in trade receivables(165)(116)
Increase in trade payables108 72 
Net change in other operating assets(31)(3)
Net change in other operating liabilities(131)(198)
Total(326)(316)
v3.25.2
Equity-based compensation
6 Months Ended
Jun. 30, 2025
Share-Based Payment Arrangements [Abstract]  
Equity-based compensation Equity-based compensation
As described in Note 23 to the Consolidated Financial Statements in the Form 20-F, Alcon has various equity incentive plans, under which Alcon may grant awards in the form of restricted stock units ("RSUs"), performance-based restricted stock units ("PSUs"), restricted stock awards ("RSAs"), or any other form of award at the discretion of the Board. Certain associates in select countries may also participate in share ownership savings plans.
The below table summarizes unvested share movements for all Alcon equity-based incentive plans for the six months ended June 30, 2025 and 2024.
Six months ended June 30
(shares in millions)20252024
Unvested at January 15.2 4.9 
Granted2.4 2.2 
Vested(1.6)(1.7)
Forfeited(0.2)(0.1)
Unvested at June 305.8 5.3 
v3.25.2
Legal proceedings update
6 Months Ended
Jun. 30, 2025
Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]  
Legal proceedings update Legal proceedings update
A number of Alcon companies are, and will likely continue to be, subject to various legal proceedings and investigations that arise from time to time, including proceedings regarding product liability, sales and marketing practices, commercial disputes, mergers and acquisitions, employment, wrongful discharge, antitrust, securities, health and safety, environmental, tax, international trade, privacy, intellectual property, including under the Hatch-Waxman Act, and anti-bribery matters such as those under the Foreign Corrupt Practices Act of 1977, as amended.
As a result, Alcon may become subject to substantial liabilities that may not be covered by insurance and could affect Alcon's business, financial position and reputation. While Alcon does not believe that any of these legal proceedings will have a material adverse effect on its financial position, litigation is inherently unpredictable and large judgments sometimes occur. As a consequence, Alcon may in the future incur judgments or enter into settlements of claims that could have a material adverse effect on its results of operations or cash flow. Note 18 to the Consolidated Financial Statements in the Form 20-F contains a summary of significant legal proceedings to which Alcon or any of its subsidiaries was a party as of the date of the Form 20-F. In the first quarter of 2025, both Alcon and the generic drug company defendant in the patent litigation concerning Simbrinza filed notices of appeal of certain rulings made by the trial court. As of August 19, 2025, there have been no other significant developments in the proceedings described in the Form 20-F nor any new significant proceedings commenced since the date of the Form 20-F.
Alcon believes that its total provisions for litigation and other legal matters are adequate based upon currently available information. However, given the inherent difficulties in estimating liabilities, additional liabilities and costs may be incurred beyond the amounts provided.
v3.25.2
Acquisitions
6 Months Ended
Jun. 30, 2025
Business Combinations [Abstract]  
Acquisitions Acquisitions
Acquisitions of businesses
During the first six months of 2025, acquisitions of businesses included Aurion Biotech, Inc. and Cylite Pty Ltd., described below. There were no acquisitions of businesses during the first six months of 2024.
Vision Care - Acquisition of majority interest in Aurion Biotech, Inc.
On March 24, 2025, Alcon closed on agreements with certain existing shareholders of Aurion to acquire approximately 58.7% of outstanding equity for approximately $486 million and outstanding convertible notes from the same shareholders for approximately $36 million, totaling $522 million cash paid at closing. When combined with Alcon's existing 40.3% investment in Aurion, the transaction resulted in 99% ownership of Aurion on an outstanding basis. Aurion's ownership on a fully diluted basis at closing was approximately 85.0% held by Alcon and 15.0% held by non-controlling interests. This transaction supports Alcon's ophthalmic pharmaceutical portfolio expansion, including biopharmaceutical applications, with the potential to advance the first-ever corneal cell therapy candidate. The acquisition of majority interest was accounted for as a business combination that resulted in goodwill of $140 million after the preliminary PPA of the consideration to the fair values of acquired assets and assumed liabilities. Total cash paid at closing, net of cash acquired, was $496 million. The transaction also resulted in non-controlling interests, described below.
The acquisition date fair value of the equity interest previously held by Alcon was $334 million, resulting in a remeasurement fair value gain of $136 million in the first quarter of 2025. The fair value gain has been included in Other income in the Condensed Consolidated Income Statement.
The preliminary PPA for the Aurion acquisition was not finalized as of the date the first quarter of 2025 interim financial statements were issued. During the second quarter of 2025, Alcon recorded a measurement period adjustment to fair values of acquired intangible assets, which resulted in an increase of $5 million to Currently marketed products and a decrease of $5 million to the Acquired IPR&D.
The below table summarizes the updated preliminary PPA for the Aurion business combination. The PPA remains provisional pending final measurement of the non-controlling interests and valuation of acquired tax attributes.
($ millions)Preliminary PPAMeasurement period adjustmentsUpdated preliminary PPA
Property, plant and equipment— 
Right-of-use assets— 
Current marketed products105 110 
Acquired IPR&D825 (5)820 
Deferred tax assets43 — 43 
Other current assets— 
Cash and cash equivalents26 — 26 
Non-current lease liabilities(4)— (4)
Non-current financial debts(1)— (1)
Deferred tax liabilities(212)— (212)
Current financial debts(34)— (34)
Current lease liabilities(2)— (2)
Current income tax liabilities(1)— (1)
Trade payables(3)— (3)
Provisions and other current liabilities(14)— (14)
Net identifiable assets acquired743  743 
Goodwill140 — 140 
Non-controlling interests(27)— (27)
Net assets acquired as a result of business combination
856  856 
Cash paid at closing522 — 522 
Previously-held investment in associated company334 — 334 
Total acquisition date fair value of consideration
856  856 
Goodwill is attributable primarily to assembled workforce and biopharmaceutical research and development capabilities. The goodwill is not deductible for tax purposes.
Direct acquisition costs of $2 million were recognized in Other expense in the Condensed Consolidated Income Statement and were reported in operating cash flows in the Condensed Consolidated Statement of Cash Flows.
Subsequent to the acquisition, the current and non-current financial debts were repaid in the second quarter of 2025.
Pro forma financial information is not presented for the Aurion business acquisition as it is not material to the Condensed Consolidated Financial Statements.
For the period from the date of the Aurion acquisition, March 24, 2025, through June 30, 2025, the acquired business reduced Alcon's Net income by $17 million.
Non-controlling interests
Alcon elected to recognize the non-controlling interests in Aurion at fair value.
Non-controlling interests with a fair value of $27 million were recognized at acquisition date, comprised of common stock and vested options. The fair value of non-controlling interests was estimated using the market and income approaches, which were equally weighted. The income approach valuation utilized net present value techniques which involve significant judgement by management and include assumptions with measurement uncertainty. The estimates include cash flow projections for a five-year period based on management forecasts, sales forecasts beyond the five-year period extrapolated using long-term expected growth rates, discount rates and future tax rates. Actual cash flows and values could vary significantly from forecasted future cash flows and related values derived using net present value techniques. Since the cash flow projections are a significant unobservable input, the fair value of the non-controlling interests was classified as Level 3 in the fair value hierarchy.
On March 26, 2025, the Aurion Board exercised their discretion under the Aurion stock plan and approved an exchange of outstanding vested options of Aurion employees for cash as settlement of their non-controlling interests in Aurion. As a result, Alcon's fully diluted interest in Aurion increased from 85.0% on the business combination date to 91.2% as of June 30, 2025.
The below table summarizes movements in the non-controlling interests on a fully diluted basis from the acquisition date to the end of the reporting period.
($ millions unless indicated otherwise)Non-controlling interests (%)Non-controlling interests
Initial recognition at acquisition date15.0 %27 
Exchange of outstanding vested options(6.2)%(11)
Non-controlling interests as of June 30, 20258.8 %16 
Profits and losses attributable to non-controlling interests are calculated on an outstanding basis.
Surgical - Acquisition of Cylite Pty Ltd.
On January 16, 2025, Alcon executed a stock purchase agreement and acquired approximately 91.2% of outstanding equity from Cylite shareholders, resulting in 100% ownership when combined with Alcon's existing 8.8% investment in Cylite. The Cylite diagnostic device complements Alcon’s existing Surgical portfolio for cataracts. The acquisition of the remaining equity interest was accounted for as a business combination that resulted in goodwill of $90 million after the preliminary PPA of the consideration to the fair values of acquired assets and assumed liabilities. Total cash paid at closing, net of cash acquired, was $72 million.
The development milestone contingent consideration is related to a potential payment of up to $10 million upon achievement of the first commercial sale of a defined product within the United States. The contingent consideration recognized during the first quarter of 2025 represents its fair value (Level 3) at the acquisition date.
The acquisition date fair value of the equity interest previously held by Alcon was $14 million, resulting in a remeasurement fair value gain of $6 million in the first quarter of 2025. The fair value gain has been included in Other income in the Condensed Consolidated Income Statement.
The below table summarizes the preliminary PPA for the Cylite business combination at acquisition date. The fair value of the assets acquired and liabilities assumed for the acquisition were based on preliminary calculations and valuations, and the estimates and assumptions for this acquisition are subject to change as additional information is obtained during the respective measurement period up to one year from the acquisition date.
($ millions)
Preliminary PPA
Property, plant and equipment
Right-of-use assets
Current marketed products
Acquired IPR&D33 
Inventories
Cash and cash equivalents
Other assets
Deferred tax liabilities(11)
Lease liabilities(1)
Trade payables(1)
Provisions and other current liabilities(1)
Net identifiable assets acquired33 
Goodwill90 
Net assets acquired as a result of business combination
123 
Cash paid at closing78 
Cash expected to be paid after closing
Previously-held FVOCI financial investment11 
Previously-held commercialization rights in intangible assets
Contingent consideration
Previously-held investment in associated company14 
Total acquisition date fair value of consideration
123 
Goodwill is attributable primarily to buyer-specific synergies, including benefits to intraocular lens sales, development collaboration arrangement and associated development timeline reduction, and assembled workforce. The goodwill is not deductible for tax purposes.
Direct acquisition costs of $1 million were recognized in Other expense in the Condensed Consolidated Income Statement and were reported in operating cash flows in the Condensed Consolidated Statement of Cash Flows.
Pro forma financial information is not presented for the Cylite business acquisition as it is not material to the Condensed Consolidated Financial Statements.
For the period from the date of the Cylite acquisition, January 16, 2025, through June 30, 2025, the acquired business reduced Alcon's Net income by $8 million.
Proposed acquisition of LENSAR, Inc.
On March 23, 2025, Alcon entered into a definitive agreement to acquire all outstanding shares of LENSAR, Inc. ("LENSAR"), a global medical technology company focused on advanced laser solutions for the treatment of cataracts, with a total consideration of up to approximately $430 million. The planned acquisition will complement Alcon’s existing Surgical portfolio in the treatment of cataracts. The transaction is subject to customary closing conditions, including regulatory approval and approval by LENSAR’s stockholders, and is expected to close in late 2025.
v3.25.2
Related parties transactions
6 Months Ended
Jun. 30, 2025
Related Party [Abstract]  
Related parties transactions Related parties transactions
Investments in associated companies
During the second quarter of 2025, Alcon increased its voting interest in an associated company to approximately 21.6% from approximately 20.0% as of December 31, 2024. As of December 31, 2024, Alcon also held voting interests of approximately 40.3% in an associated company which Alcon acquired a majority interest in during the first quarter of 2025 and 8.8% in an associated company which was wholly acquired during the first quarter of 2025. Associated companies are accounted for using the equity method as Alcon is considered to have significant influence.
The below table summarizes activity related to investments in associated companies for the six months ended June 30, 2025 and 2024.
Investments in associated companies
($ millions)20252024
Balance as of January 1293 10 
Purchases— 
Share of (loss) from associated companies recognized in Consolidated Income Statement(15)— 
Gains on fair value remeasurements recognized in Consolidated Income Statement(1)
142 — 
Recognition of business combinations(1)
(348)— 
Balance as of June 3080 10 
(1)    Refer to Note 11 for additional information.
There were no amounts due from associated companies as of June 30, 2025. As of December 31, 2024, long-term convertible notes due from associated companies included in Financial assets on the Condensed Consolidated Balance Sheet amounted to $11 million.
v3.25.2
Subsequent events
6 Months Ended
Jun. 30, 2025
Events After Reporting Period [Abstract]  
Subsequent events Subsequent events
On July 7, 2025, Alcon entered into a definitive agreement to acquire 100% of the outstanding equity of LumiThera, Inc. (“LumiThera”), a privately held, US-based company and manufacturer of the Valeda photobiomodulation device, a multi-wavelength treatment for dry age-related macular degeneration. The planned acquisition will expand Alcon's Surgical portfolio. Pursuant to the terms of the agreement, Alcon agreed to pay $132 million, which represents up-front consideration of $140 million less the value of Alcon's equity interest and certain deductions, and additional amounts to be potentially paid upon achievement of certain regulatory and commercial milestones. The transaction is subject to customary closing conditions and is expected to close in the third quarter of 2025.
On August 4, 2025, Alcon entered into a definitive agreement to acquire STAAR Surgical Company ("STAAR"), a global medical technology company focused on the research, development, manufacturing, distribution and sale of phakic intraocular lenses. The planned acquisition will complement Alcon’s existing Surgical portfolio in the treatment of myopia. Pursuant to the terms of the agreement, Alcon agreed to pay $28.00 per share to acquire all outstanding shares of STAAR’s common stock for total consideration of approximately $1.5 billion. The transaction is subject to customary closing conditions, including regulatory approval and approval by STAAR’s shareholders, and is expected to close in six to 12 months.
On July 4, 2025, the United States Congress enacted budget reconciliation bill H.R. 1, which includes significant provisions such as the permanent extension of certain provisions of the Tax Cuts and Jobs Act that were set to expire. The legislation has multiple effective dates, with certain provisions effective in 2025 and others to be implemented through 2027. The enactment of H.R. 1 did not impact Alcon's Condensed Consolidated Financial Statements for the period ended June 30, 2025. Alcon is continuing to evaluate the potential future impact of these tax law changes on our consolidated results of operations, financial position and cash flows.
These unaudited Condensed Consolidated Interim Financial Statements were authorized for issue by the Audit & Risk Committee on August 19, 2025.
v3.25.2
Selected accounting policies (Policies)
6 Months Ended
Jun. 30, 2025
Corporate information and statement of IFRS compliance [abstract]  
Statement of IFRS compliance The accompanying Condensed Consolidated Interim Financial Statements present our historical financial position, results of operations, comprehensive income and cash flows in accordance with IFRS Accounting Standards.
Use of estimates and assumptions
Use of estimates and assumptions
The preparation of Condensed Consolidated Interim Financial Statements requires management to make certain estimates and assumptions, either at the balance sheet date or during the period, that affect the reported amounts of assets and liabilities as well as revenues and expenses. Because of the inherent uncertainties, actual outcomes and results may differ from management's assumptions and estimates.
Business combinations
Business combinations
The business combinations accounting policy was expanded in 2025 to include business combinations achieved in stages and non-controlling interests, as follows:
If the business combination is achieved in stages, the acquisition date carrying value of Alcon’s previously held equity interest in the acquiree is remeasured to fair value at the acquisition date. Any gains or losses arising from such remeasurement are recognized in Other income or Other expense, respectively, in the Consolidated Income Statement.
Alcon recognizes non-controlling interests in the acquired entity on an acquisition-by-acquisition basis, either at fair value or at the non-controlling interests' proportionate share of the acquired entity’s net identifiable assets. This decision is made on an acquisition-by-acquisition basis.
Treasury shares
Treasury shares
The accounting policies were expanded in 2025 to include treasury shares acquired in repurchases, as follows:
Common shares repurchased, which are measured at fair value on their trade date and include transaction costs directly attributable to the repurchase, are held in treasury and deducted from equity. No gains or losses are recognized in the Consolidated Income Statement on the purchase or issuance of such shares. Payments for the acquisition of treasury shares are recorded in Financing activities in the Consolidated Statement of Cash Flows.
Treasury share repurchases denominated in a currency other than the reporting currency are valued at the trade date using the spot exchange rate for the reporting currency. Any realized foreign exchange gains or losses arising between the trade date and settlement date is recognized in Other financial income & expense in the Consolidated Income Statement. If the trade date by the broker or bank and settlement date of the repurchase by the Company fall in different reporting periods, an accrued liability is recognized at period-end for the settlement obligation in Provisions & other current liabilities on the Consolidated Balance Sheet.
Impairment of goodwill, Alcon brand name and definite lived intangible assets
Impairment of goodwill, Alcon brand name and definite lived intangible assets
As discussed in Note 2 to the Consolidated Financial Statements in the Form 20-F, Goodwill, the Alcon brand name and acquired in-process research & development ("IPR&D") projects are reviewed for impairment at least annually and these, as well as all other investments in intangible assets, are reviewed for impairment whenever events or changes in circumstance indicate that the asset's balance sheet or reportable segment carrying amount may not be recoverable. Goodwill and other intangible assets represent a significant amount of total assets on the Consolidated Balance Sheet. Impairment testing may lead to potentially significant impairment charges in the future, which could have a materially adverse impact on Alcon's results of operations and financial condition.
New standards and interpretations not yet adopted
New standards and interpretations not yet adopted
In April 2024, the IASB issued IFRS 18, Presentation and Disclosure in Financial Statements, which will replace IAS 1, Presentation of Financial Statements and accompanies limited amendments to other standards which will be effective upon the adoption of the new standard. IFRS 18 will be retroactively effective for our annual reporting periods beginning on January 1, 2027, with early adoption permitted. The standard is expected to improve comparability and transparency of financial statements by requiring defined subtotals in the Consolidated Income Statement, requiring disclosure of management-defined performance measures and adding new principles for aggregation and disaggregation of information. Alcon is currently evaluating the impact of this standard on its Consolidated Financial Statements.
Other than previously described, as of June 30, 2025 there are no IFRS Accounting Standards, interpretations or amendments not yet effective that would be expected to have a material impact on Alcon upon adoption.
v3.25.2
Segmentation of key figures (Tables)
6 Months Ended
Jun. 30, 2025
Operating Segments [Abstract]  
Disclosure of segment information
Net sales and other revenues by segment
Three months ended June 30Six months ended June 30
($ millions)2025202420252024
Surgical
Implantables456 464 876 897 
Consumables777 736 1,489 1,422 
Equipment/other222 223 421 442 
Total Surgical net sales1,455 1,423 2,786 2,761 
Vision Care
Contact lenses692 636 1,380 1,307 
Ocular health430 423 862 858 
Total Vision Care net sales1,122 1,059 2,242 2,165 
Total net sales2,577 2,482 5,028 4,926 
Surgical other revenues— — — 
Vision Care other revenues
19 14 40 29 
Total other revenues19 14 41 29 
Total net sales and other revenues2,596 2,496 5,0694,955 
Segment contribution and reconciliation to income before taxes
The below tables summarize segment contribution, including material items of income and expense as required by IFRS 8, Operating Segments, and the associated IFRIC agenda decision published in July 2024. The below tables also include a reconciliation of segment contribution to Income before taxes.
SurgicalVision CareNot allocated to segmentsTotal
Three months ended June 30
Three months ended June 30
Three months ended June 30
Three months ended June 30
($ millions)20252024202520242025202420252024
Net sales1,455 1,423 1,122 1,059   2,577 2,482 
Other revenues— — 19 14 — — 19 14 
Cost of net sales(553)(510)(416)(422)(227)(176)(1,196)(1,108)
Cost of other revenues— — (12)(14)— — (12)(14)
Selling, general & administration(372)(368)(415)(390)(83)(79)(870)(837)
Research & development(152)(142)(90)(67)(3)(11)(245)(220)
Other income— — — — 
Other expense— — — — (31)(4)(31)(4)
Segment contribution and Operating income378 403 208 180 (339)(265)247 318 
Interest expense(51)(50)(51)(50)
Other financial income & expense12 12 
Share of (loss) from associated companies(1)— (1)— 
Income before taxes199 280 
SurgicalVision CareNot allocated to segmentsTotal
Six months ended June 30
Six months ended June 30
Six months ended June 30
Six months ended June 30
($ millions)20252024202520242025202420252024
Net sales2,786 2,761 2,242 2,165   5,028 4,926 
Other revenues— 40 29 — — 41 29 
Cost of net sales(1,049)(980)(813)(838)(405)(353)(2,267)(2,171)
Cost of other revenues(1)— (30)(28)— — (31)(28)
Selling, general & administration(728)(720)(788)(758)(167)(161)(1,683)(1,639)
Research & development(295)(272)(162)(132)(10)(15)(467)(419)
Other income— — — — 154 11 154 11 
Other expense— — — — (60)(23)(60)(23)
Segment contribution and Operating income714 789 489 438 (488)(541)715 686 
Interest expense(100)(95)(100)(95)
Other financial income & expense13 24 13 24 
Share of (loss) from associated companies(15)— (15)— 
Income before taxes613 615 
Disclosure of net sales by region
Net sales by region(1)
Three months ended June 30Six months ended June 30
($ millions unless indicated otherwise)2025202420252024
United States1,160 45 %1,141 46 %2,297 46 %2,290 46 %
International1,417 55 %1,341 54 %2,731 54 %2,636 54 %
Net sales2,577 100 %2,482 100 %5,028 100 %4,926 100 %
(1)     Net sales by location of third-party customer.
v3.25.2
Non-current and current financial debts (Tables)
6 Months Ended
Jun. 30, 2025
Disclosure Of Borrowings [Abstract]  
Schedule of financial debts
The below table summarizes non-current and current Financial debts outstanding as of June 30, 2025 and December 31, 2024.
($ millions)June 30, 2025December 31, 2024
Non-current financial debts
Local facilities (Japan), floating rate debt due 2028
57 — 
2.750% Series 2026 Notes
499 499 
2.375% Series 2028 Notes
584 517 
3.000% Series 2029 Notes
996 995 
2.600% Series 2030 Notes
747 746 
5.375% Series 2032 Notes
694 694 
3.800% Series 2049 Notes
495 495 
5.750% Series 2052 Notes
592 592 
Revolving facility, floating rate due 2029
— — 
Total non-current financial debts4,664 4,538 
Current financial debts
Local facilities, floating rate:
Japan
— 26 
All others61 67 
Other short-term financial debts, floating rate10 
Derivatives10 
Total current financial debts81 105 
Total financial debts4,745 4,643 
v3.25.2
Financial instruments (Tables)
6 Months Ended
Jun. 30, 2025
Financial Instruments [Abstract]  
Disclosure of fair value measurement of assets
The below table summarizes financial assets and liabilities measured at fair value on a recurring basis as of June 30, 2025 and December 31, 2024.
June 30, 2025
December 31, 2024
($ millions)Level 1Level 2Level 3TotalLevel 1Level 2Level 3Total
Non-current financial assets
Long-term financial investments measured at FVOCI(1)
188 — 171 359 81 — 201 282 
Long-term financial investments measured at FVPL— — 1 — — 1 
Deferred compensation assets(2)
188 — — 188 180 — — 180 
Non-current financial assets at fair value376  172 548 261  202 463 
Current financial assets
Money market funds690 — — 690 432 — — 432 
Current portion of long-term financial investments measured at FVPL(3)
— — 2 — — 1 
Derivative financial instruments(3)
— — 7 — 12 — 12 
Current financial assets at fair value690 7 2 699 432 12 1 445 
Financial assets at fair value1,066 7 174 1,247 693 12 203 908 
Financial liabilities
Contingent consideration liabilities— — (110)(110)— — (96)(96)
Derivative financial instruments
— (10)— (10)— (4)— (4)
Financial liabilities at fair value (10)(110)(120) (4)(96)(100)
(1)    As of December 31, 2024, included $11 million of Long-term convertible notes due from associated companies.
(2)    Recorded in Other non-current assets.
(3)    Recorded in Other current assets.
Financial assets
Long-term financial investments measured
at FVOCI
Financial investments
measured at FVPL
($ millions)2025202420252024
Balance as of January 1201 147 2 8 
Additions15 90 — 
Net (losses)/gains recognized in Consolidated Statement of Comprehensive Income(34)— — 
Net gains recognized in Consolidated Income Statement— — — 
Amortization— — (1)(2)
Settlements(11)— — (5)
Balance as of June 30171 243 3 3 
Disclosure of fair value measurement of liabilities
The below table summarizes financial assets and liabilities measured at fair value on a recurring basis as of June 30, 2025 and December 31, 2024.
June 30, 2025
December 31, 2024
($ millions)Level 1Level 2Level 3TotalLevel 1Level 2Level 3Total
Non-current financial assets
Long-term financial investments measured at FVOCI(1)
188 — 171 359 81 — 201 282 
Long-term financial investments measured at FVPL— — 1 — — 1 
Deferred compensation assets(2)
188 — — 188 180 — — 180 
Non-current financial assets at fair value376  172 548 261  202 463 
Current financial assets
Money market funds690 — — 690 432 — — 432 
Current portion of long-term financial investments measured at FVPL(3)
— — 2 — — 1 
Derivative financial instruments(3)
— — 7 — 12 — 12 
Current financial assets at fair value690 7 2 699 432 12 1 445 
Financial assets at fair value1,066 7 174 1,247 693 12 203 908 
Financial liabilities
Contingent consideration liabilities— — (110)(110)— — (96)(96)
Derivative financial instruments
— (10)— (10)— (4)— (4)
Financial liabilities at fair value (10)(110)(120) (4)(96)(100)
(1)    As of December 31, 2024, included $11 million of Long-term convertible notes due from associated companies.
(2)    Recorded in Other non-current assets.
(3)    Recorded in Other current assets.
Financial liabilities
Contingent consideration liabilities
($ millions)20252024
Balance as of January 1(96)(90)
Additions(9)— 
Accretion for passage of time(5)(4)
Balance as of June 30(110)(94)
Disclosure of net value of unsettled positions for derivative forward contracts and swaps
The below table summarizes the net value of unsettled positions for currency derivatives contracts including swaps, forwards and options as of June 30, 2025 and December 31, 2024.
($ millions)June 30, 2025December 31, 2024
Unrealized gains in Other current assets
12 
Unrealized losses in Current financial debts
(10)(4)
Net value of unsettled positions for derivatives contracts
(3)8 
v3.25.2
Condensed Consolidated Statements of Cash Flows - additional details (Tables)
6 Months Ended
Jun. 30, 2025
Cash Flow Statement [Abstract]  
Disclosure of depreciation, amortization, impairments and fair value adjustments
Six months ended June 30
($ millions)20252024
Property, plant & equipment201 191 
Right-of-use assets43 40 
Intangible assets428 376 
Other non-current assets(1)
(143)(1)
Total529 606 
(1)    For the six months ended June 30, 2025, Other non-current assets includes gains on fair value remeasurements of investments in associated companies. Refer to Note 11 for additional information.
Disclosure of change in net current assets and other operating cash flow items
Six months ended June 30
($ millions)20252024
(Increase) in inventories(107)(71)
(Increase) in trade receivables(165)(116)
Increase in trade payables108 72 
Net change in other operating assets(31)(3)
Net change in other operating liabilities(131)(198)
Total(326)(316)
v3.25.2
Equity-based compensation (Tables)
6 Months Ended
Jun. 30, 2025
Share-Based Payment Arrangements [Abstract]  
Summary of unvested share movements
The below table summarizes unvested share movements for all Alcon equity-based incentive plans for the six months ended June 30, 2025 and 2024.
Six months ended June 30
(shares in millions)20252024
Unvested at January 15.2 4.9 
Granted2.4 2.2 
Vested(1.6)(1.7)
Forfeited(0.2)(0.1)
Unvested at June 305.8 5.3 
v3.25.2
Acquisitions (Tables)
6 Months Ended
Jun. 30, 2025
Business Combinations [Abstract]  
Summary of business combination
The below table summarizes the updated preliminary PPA for the Aurion business combination. The PPA remains provisional pending final measurement of the non-controlling interests and valuation of acquired tax attributes.
($ millions)Preliminary PPAMeasurement period adjustmentsUpdated preliminary PPA
Property, plant and equipment— 
Right-of-use assets— 
Current marketed products105 110 
Acquired IPR&D825 (5)820 
Deferred tax assets43 — 43 
Other current assets— 
Cash and cash equivalents26 — 26 
Non-current lease liabilities(4)— (4)
Non-current financial debts(1)— (1)
Deferred tax liabilities(212)— (212)
Current financial debts(34)— (34)
Current lease liabilities(2)— (2)
Current income tax liabilities(1)— (1)
Trade payables(3)— (3)
Provisions and other current liabilities(14)— (14)
Net identifiable assets acquired743  743 
Goodwill140 — 140 
Non-controlling interests(27)— (27)
Net assets acquired as a result of business combination
856  856 
Cash paid at closing522 — 522 
Previously-held investment in associated company334 — 334 
Total acquisition date fair value of consideration
856  856 
The below table summarizes the preliminary PPA for the Cylite business combination at acquisition date. The fair value of the assets acquired and liabilities assumed for the acquisition were based on preliminary calculations and valuations, and the estimates and assumptions for this acquisition are subject to change as additional information is obtained during the respective measurement period up to one year from the acquisition date.
($ millions)
Preliminary PPA
Property, plant and equipment
Right-of-use assets
Current marketed products
Acquired IPR&D33 
Inventories
Cash and cash equivalents
Other assets
Deferred tax liabilities(11)
Lease liabilities(1)
Trade payables(1)
Provisions and other current liabilities(1)
Net identifiable assets acquired33 
Goodwill90 
Net assets acquired as a result of business combination
123 
Cash paid at closing78 
Cash expected to be paid after closing
Previously-held FVOCI financial investment11 
Previously-held commercialization rights in intangible assets
Contingent consideration
Previously-held investment in associated company14 
Total acquisition date fair value of consideration
123 
Summary of movements in non-controlling interests
The below table summarizes movements in the non-controlling interests on a fully diluted basis from the acquisition date to the end of the reporting period.
($ millions unless indicated otherwise)Non-controlling interests (%)Non-controlling interests
Initial recognition at acquisition date15.0 %27 
Exchange of outstanding vested options(6.2)%(11)
Non-controlling interests as of June 30, 20258.8 %16 
v3.25.2
Related parties transactions (Tables)
6 Months Ended
Jun. 30, 2025
Related Party [Abstract]  
Summary of activity related to investments in associated companies
The below table summarizes activity related to investments in associated companies for the six months ended June 30, 2025 and 2024.
Investments in associated companies
($ millions)20252024
Balance as of January 1293 10 
Purchases— 
Share of (loss) from associated companies recognized in Consolidated Income Statement(15)— 
Gains on fair value remeasurements recognized in Consolidated Income Statement(1)
142 — 
Recognition of business combinations(1)
(348)— 
Balance as of June 3080 10 
(1)    Refer to Note 11 for additional information.
v3.25.2
Significant transactions (Details) - USD ($)
$ in Millions
6 Months Ended
Mar. 24, 2025
Mar. 23, 2025
Jan. 16, 2025
Jan. 15, 2025
Oct. 17, 2024
Jul. 01, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Disclosure of detailed information about business combination [line items]                  
Goodwill             $ 9,181   $ 8,946
Cash paid for the acquisition             $ 568 $ 0  
Aurion Biotech, Inc.                  
Disclosure of detailed information about business combination [line items]                  
Ownership percentage in subsidiary 99.00%                
Ownership percentage in subsidiary on a fully diluted basis 85.00%           91.20%    
Ownership percentage in subsidiary held by non-controlling interests on a fully diluted basis 15.00%           8.80%    
Divestment of product rights and out-licensing in China                  
Disclosure of detailed information about business combination [line items]                  
Up-front consideration         $ 116        
Up-front consideration (in percentage)         16.70%        
Aurion Biotech, Inc.                  
Disclosure of detailed information about business combination [line items]                  
Investment ownership percentage   40.30%              
Cylite Pty Ltd.                  
Disclosure of detailed information about business combination [line items]                  
Investment ownership percentage       8.80%          
Ownership percentage in subsidiary     100.00%            
Aurion Biotech, Inc.                  
Disclosure of detailed information about business combination [line items]                  
Percentage of outstanding shares acquired 58.70%                
Total acquisition date fair value of consideration $ 486                
Previously-held commercialization rights in intangible assets 36                
Cash paid at closing 522           $ 522    
Goodwill 140           $ 140    
Cash paid for the acquisition $ 496                
Cylite Pty Ltd.                  
Disclosure of detailed information about business combination [line items]                  
Percentage of outstanding shares acquired     91.20%            
Total acquisition date fair value of consideration     $ 123            
Cash paid at closing     78            
Goodwill     90            
Cash paid for the acquisition     $ 72            
BELKIN Vision Ltd.                  
Disclosure of detailed information about business combination [line items]                  
Percentage of outstanding shares acquired           100.00%      
Goodwill           $ 20      
Cash paid for the acquisition           $ 61      
v3.25.2
Segmentation of key figures - Narrative (Details)
Jun. 30, 2025
segment
Operating Segments [Abstract]  
Number of reportable segments 2
v3.25.2
Segmentation of key figures - Net sales and other revenues by segment (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Disclosure of operating segments [line items]        
Net sales $ 2,577 $ 2,482 $ 5,028 $ 4,926
Total other revenues 19 14 41 29
Net sales and other revenues 2,596 2,496 5,069 4,955
Operating segments        
Disclosure of operating segments [line items]        
Net sales 2,577 2,482 5,028 4,926
Surgical | Operating segments        
Disclosure of operating segments [line items]        
Net sales 1,455 1,423 2,786 2,761
Total other revenues 0 0 1 0
Surgical | Implantables | Operating segments        
Disclosure of operating segments [line items]        
Net sales 456 464 876 897
Surgical | Consumables | Operating segments        
Disclosure of operating segments [line items]        
Net sales 777 736 1,489 1,422
Surgical | Equipment/other | Operating segments        
Disclosure of operating segments [line items]        
Net sales 222 223 421 442
Vision Care | Operating segments        
Disclosure of operating segments [line items]        
Net sales 1,122 1,059 2,242 2,165
Total other revenues 19 14 40 29
Vision Care | Contact lenses | Operating segments        
Disclosure of operating segments [line items]        
Net sales 692 636 1,380 1,307
Vision Care | Ocular health | Operating segments        
Disclosure of operating segments [line items]        
Net sales $ 430 $ 423 $ 862 $ 858
v3.25.2
Segmentation of key figures - Segment contribution and reconciliation to income before taxes (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Disclosure of operating segments [line items]        
Net sales $ 2,577 $ 2,482 $ 5,028 $ 4,926
Other revenues 19 14 41 29
Cost of net sales (1,196) (1,108) (2,267) (2,171)
Cost of other revenues (12) (14) (31) (28)
Selling, general & administration (870) (837) (1,683) (1,639)
Research & development (245) (220) (467) (419)
Other income 5 5 154 11
Other expense (31) (4) (60) (23)
Operating income 247 318 715 686
Interest expense (51) (50) (100) (95)
Other financial income & expense 4 12 13 24
Share of (loss) from associated companies (1) 0 (15) 0
Income before taxes 199 280 613 615
Operating segments        
Disclosure of operating segments [line items]        
Net sales 2,577 2,482 5,028 4,926
Operating segments | Surgical        
Disclosure of operating segments [line items]        
Net sales 1,455 1,423 2,786 2,761
Other revenues 0 0 1 0
Cost of net sales (553) (510) (1,049) (980)
Cost of other revenues 0 0 (1) 0
Selling, general & administration (372) (368) (728) (720)
Research & development (152) (142) (295) (272)
Other income 0 0 0 0
Other expense 0 0 0 0
Operating income 378 403 714 789
Operating segments | Vision Care        
Disclosure of operating segments [line items]        
Net sales 1,122 1,059 2,242 2,165
Other revenues 19 14 40 29
Cost of net sales (416) (422) (813) (838)
Cost of other revenues (12) (14) (30) (28)
Selling, general & administration (415) (390) (788) (758)
Research & development (90) (67) (162) (132)
Other income 0 0 0 0
Other expense 0 0 0 0
Operating income 208 180 489 438
Not allocated to segments        
Disclosure of operating segments [line items]        
Net sales 0 0 0 0
Other revenues 0 0 0 0
Cost of net sales (227) (176) (405) (353)
Cost of other revenues 0 0 0 0
Selling, general & administration (83) (79) (167) (161)
Research & development (3) (11) (10) (15)
Other income 5 5 154 11
Other expense (31) (4) (60) (23)
Operating income (339) (265) (488) (541)
Interest expense (51) (50) (100) (95)
Other financial income & expense 4 12 13 24
Share of (loss) from associated companies $ (1) $ 0 $ (15) $ 0
v3.25.2
Segmentation of key figures - Net sales by region (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Disclosure of geographical areas [line items]        
Net sales $ 2,577 $ 2,482 $ 5,028 $ 4,926
Percentage of entity's revenue (as a percent) 100.00% 100.00% 100.00% 100.00%
United States        
Disclosure of geographical areas [line items]        
Net sales $ 1,160 $ 1,141 $ 2,297 $ 2,290
Percentage of entity's revenue (as a percent) 45.00% 46.00% 46.00% 46.00%
International        
Disclosure of geographical areas [line items]        
Net sales $ 1,417 $ 1,341 $ 2,731 $ 2,636
Percentage of entity's revenue (as a percent) 55.00% 54.00% 54.00% 54.00%
v3.25.2
Dividends, earnings per share and share repurchase program (Details)
shares in Millions, $ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Feb. 25, 2025
USD ($)
May 31, 2025
USD ($)
May 31, 2025
SFr / shares
May 31, 2024
USD ($)
May 31, 2024
SFr / shares
Jun. 30, 2025
USD ($)
shares
Jun. 30, 2024
shares
Jun. 30, 2025
USD ($)
shares
Jun. 30, 2024
USD ($)
shares
Earnings per share [abstract]                  
Dividends paid (in CHF per share) | SFr / shares     SFr 0.28   SFr 0.24        
Dividends paid | $   $ 166   $ 130          
Number of shares outstanding (in shares)           494.4   494.4  
Repurchase of common shares (in shares)               1.4  
Number of shares issued for vesting under the equity incentive programs (in shares)               1.1  
Weighted average number of shares outstanding - basic (in shares)           495.2 494.5 495.2 494.1
Weighted average number of shares outstanding - diluted (in shares)           497.9 497.0 497.9 496.7
Potentially dilutive shares (in shares)           2.7 2.5 2.7 2.6
Share repurchase program, authorized amount | $ $ 750                
Share repurchase program, term 3 years                
Number of shares repurchased (in shares)               1.4  
Acquisition of treasury shares | $               $ 121  
Payments for acquisition of treasury shares | $               116 $ 0
Share repurchase liability, current | $           $ 5   $ 5  
v3.25.2
Intangible assets other than goodwill (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Disclosure of detailed information about intangible assets [abstract]        
Impairment of intangibles $ 43 $ 9 $ 43 $ 9
v3.25.2
Non-current and current financial debts - Schedule of financial debts (Details)
$ in Millions, ¥ in Billions
Jun. 30, 2025
USD ($)
Jan. 20, 2025
USD ($)
Jan. 20, 2025
JPY (¥)
Dec. 31, 2024
USD ($)
Disclosure of detailed information about borrowings [line items]        
Total non-current financial debts $ 4,664     $ 4,538
Total current financial debts 81     105
Total financial debts 4,745     4,643
Local facilities (Japan), floating rate debt due 2028        
Disclosure of detailed information about borrowings [line items]        
Total non-current financial debts 57     0
Total current financial debts $ 0     26
Total financial debts   $ 64 ¥ 10  
Series 2026 Notes        
Disclosure of detailed information about borrowings [line items]        
Borrowings, interest rate 2.75%      
Total non-current financial debts $ 499     499
Series 2028 Notes        
Disclosure of detailed information about borrowings [line items]        
Borrowings, interest rate 2.375%      
Total non-current financial debts $ 584     517
Series 2029 Notes        
Disclosure of detailed information about borrowings [line items]        
Borrowings, interest rate 3.00%      
Total non-current financial debts $ 996     995
Series 2030 Notes        
Disclosure of detailed information about borrowings [line items]        
Borrowings, interest rate 2.60%      
Total non-current financial debts $ 747     746
Series 2032 Notes        
Disclosure of detailed information about borrowings [line items]        
Borrowings, interest rate 5.375%      
Total non-current financial debts $ 694     694
Series 2049 Notes        
Disclosure of detailed information about borrowings [line items]        
Borrowings, interest rate 3.80%      
Total non-current financial debts $ 495     495
Series 2052 Notes        
Disclosure of detailed information about borrowings [line items]        
Borrowings, interest rate 5.75%      
Total non-current financial debts $ 592     592
Revolving facility, floating rate due 2029        
Disclosure of detailed information about borrowings [line items]        
Total non-current financial debts 0     0
All others        
Disclosure of detailed information about borrowings [line items]        
Total current financial debts 61     67
Other short-term financial debts, floating rate        
Disclosure of detailed information about borrowings [line items]        
Total current financial debts 10     8
Derivatives        
Disclosure of detailed information about borrowings [line items]        
Total current financial debts $ 10     $ 4
v3.25.2
Non-current and current financial debts - Additional information (Details)
$ in Millions, ¥ in Billions
3 Months Ended 6 Months Ended
Jan. 20, 2025
USD ($)
borrowing_facility
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jan. 20, 2025
JPY (¥)
Dec. 31, 2024
USD ($)
Disclosure of detailed information about borrowings [line items]              
Interest expense   $ 43 $ 43 $ 84 $ 83    
Financial debts   4,745   4,745     $ 4,643
Non-current financial debts   4,664   4,664     4,538
Revolving facility, floating rate due 2029              
Disclosure of detailed information about borrowings [line items]              
Undrawn borrowing facilities   1,320   1,320      
Non-current financial debts   0   0     0
Local facilities (Japan), floating rate debt due 2028              
Disclosure of detailed information about borrowings [line items]              
Number of facilities matured | borrowing_facility 3            
Number of facilities entered | borrowing_facility 2            
Borrowings, term (in years) 3 years            
Financial debts $ 64         ¥ 10  
Non-current financial debts   $ 57   $ 57     $ 0
v3.25.2
Financial instruments - Schedule of fair value of assets and liabilities (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
Dec. 31, 2023
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value $ 763 $ 652    
Long-term convertible notes due from associated companies 0 11    
Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Financial liabilities at fair value (120) (100)    
Recurring fair value measurement | Contingent consideration liabilities        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Financial liabilities at fair value (110) (96)    
Recurring fair value measurement | Derivative financial instruments        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Financial liabilities at fair value (10) (4)    
Level 1 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Financial liabilities at fair value 0 0    
Level 1 | Recurring fair value measurement | Contingent consideration liabilities        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Financial liabilities at fair value 0 0    
Level 1 | Recurring fair value measurement | Derivative financial instruments        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Financial liabilities at fair value 0 0    
Level 2 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Financial liabilities at fair value (10) (4)    
Level 2 | Recurring fair value measurement | Contingent consideration liabilities        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Financial liabilities at fair value 0 0    
Level 2 | Recurring fair value measurement | Derivative financial instruments        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Financial liabilities at fair value (10) (4)    
Level 3 | Contingent consideration liabilities        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Financial liabilities at fair value (110) (96) $ (94) $ (90)
Level 3 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Financial liabilities at fair value (110) (96)    
Level 3 | Recurring fair value measurement | Contingent consideration liabilities        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Financial liabilities at fair value (110) (96)    
Level 3 | Recurring fair value measurement | Derivative financial instruments        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Financial liabilities at fair value 0 0    
Financial assets | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 548 463    
Current financial assets at fair value 699 445    
Financial assets at fair value 1,247 908    
Financial assets | Level 1 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 376 261    
Current financial assets at fair value 690 432    
Financial assets at fair value 1,066 693    
Financial assets | Level 2 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 0 0    
Current financial assets at fair value 7 12    
Financial assets at fair value 7 12    
Financial assets | Level 3 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 172 202    
Current financial assets at fair value 2 1    
Financial assets at fair value 174 203    
Deferred compensation assets | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 188 180    
Deferred compensation assets | Level 1 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 188 180    
Deferred compensation assets | Level 2 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 0 0    
Deferred compensation assets | Level 3 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 0 0    
Money market funds | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Current financial assets at fair value 690 432    
Money market funds | Level 1 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Current financial assets at fair value 690 432    
Money market funds | Level 2 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Current financial assets at fair value 0 0    
Money market funds | Level 3 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Current financial assets at fair value 0 0    
Derivative financial instruments | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Current financial assets at fair value 7 12    
Derivative financial instruments | Level 1 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Current financial assets at fair value 0 0    
Derivative financial instruments | Level 2 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Current financial assets at fair value 7 12    
Derivative financial instruments | Level 3 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Current financial assets at fair value 0 0    
Measured at FVOCI | Long-term financial investments | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 359 282    
Measured at FVOCI | Long-term financial investments | Level 1 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 188 81    
Measured at FVOCI | Long-term financial investments | Level 2 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 0 0    
Measured at FVOCI | Long-term financial investments | Level 3 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 171 201    
Measured at FVPL | Long-term financial investments | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 1 1    
Measured at FVPL | Long-term financial investments | Level 1 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 0 0    
Measured at FVPL | Long-term financial investments | Level 2 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 0 0    
Measured at FVPL | Long-term financial investments | Level 3 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Non-current financial assets at fair value 1 1    
Measured at FVPL | Current portion of long-term financial investments | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Current financial assets at fair value 2 1    
Measured at FVPL | Current portion of long-term financial investments | Level 1 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Current financial assets at fair value 0 0    
Measured at FVPL | Current portion of long-term financial investments | Level 2 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Current financial assets at fair value 0 0    
Measured at FVPL | Current portion of long-term financial investments | Level 3 | Recurring fair value measurement        
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]        
Current financial assets at fair value $ 2 $ 1    
v3.25.2
Financial instruments - Additional information (Details)
$ in Millions
6 Months Ended
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Disclosure of detailed information about borrowings [line items]    
Contingent amount $ 790  
Non-current financial assets at fair value 763 $ 652
Collateral amount $ 385  
Collateral amount increase percentage 20.00%  
Measured at amortized cost or cost | Long-term note receivable and other financial assets    
Disclosure of detailed information about borrowings [line items]    
Financial assets $ 184  
Non-current financial assets at fair value 183  
Current financial assets at fair value $ 1  
Minimum    
Disclosure of detailed information about borrowings [line items]    
Probability of success, contingent consideration 0  
Maximum    
Disclosure of detailed information about borrowings [line items]    
Probability of success, contingent consideration 0.95  
Senior Notes Due 2026, 2028, 2029, 2030, 2032, 2049 and 2052    
Disclosure of detailed information about borrowings [line items]    
Financial liabilities, at fair value $ 4,392 4,240
Senior Notes Due 2026, 2028, 2029, 2030, 2032, 2049 and 2052 | Measured at amortized cost or cost    
Disclosure of detailed information about borrowings [line items]    
Financial liabilities, at fair value and amortized cost $ 4,607 $ 4,538
v3.25.2
Financial instruments - Activity in level 3 financial assets (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Changes in fair value measurement, assets [abstract]    
Net gains recognized in Consolidated Income Statement $ 142 $ 0
Level 3 | Financial investments | Measured at FVOCI    
Changes in fair value measurement, assets [abstract]    
Balance as of January 1 201 147
Additions 15 90
Net (losses)/gains recognized in Consolidated Statement of Comprehensive Income (34) 6
Net gains recognized in Consolidated Income Statement 0 0
Amortization 0 0
Settlements (11) 0
Balance as of June 30 171 243
Level 3 | Financial investments | Measured at FVPL    
Changes in fair value measurement, assets [abstract]    
Balance as of January 1 2 8
Additions 2 0
Net (losses)/gains recognized in Consolidated Statement of Comprehensive Income 0 0
Net gains recognized in Consolidated Income Statement 0 2
Amortization (1) (2)
Settlements 0 (5)
Balance as of June 30 $ 3 $ 3
v3.25.2
Financial instruments - Activity in level 3 financial liabilities (Details) - Level 3 - Contingent consideration liabilities - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Changes in fair value measurement, liabilities [abstract]    
Balance as of January 1 $ (96) $ (90)
Additions (9) 0
Accretion for passage of time (5) (4)
Balance as of June 30 $ (110) $ (94)
v3.25.2
Financial instruments - Disclosure of net value of unsettled positions for derivative forward contracts and swaps (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Financial Instruments [Abstract]    
Unrealized gains in Other current assets $ 7 $ 12
Unrealized losses in Current financial debts (10) (4)
Net value of unsettled positions for derivatives contracts $ (3) $ 8
v3.25.2
Condensed Consolidated Statements of Cash Flows - additional details - Depreciation, amortization, impairments and fair value adjustments (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Disclosure of detailed information about property, plant and equipment [line items]    
Total $ 529 $ 606
Property, plant & equipment    
Disclosure of detailed information about property, plant and equipment [line items]    
Total 201 191
Right-of-use assets    
Disclosure of detailed information about property, plant and equipment [line items]    
Total 43 40
Intangible assets    
Disclosure of detailed information about property, plant and equipment [line items]    
Total 428 376
Other non-current assets    
Disclosure of detailed information about property, plant and equipment [line items]    
Total $ (143) $ (1)
v3.25.2
Condensed Consolidated Statements of Cash Flows - additional details - Change in net current assets and other operating cash flow items (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Cash Flow Statement [Abstract]    
(Increase) in inventories $ (107) $ (71)
(Increase) in trade receivables (165) (116)
Increase in trade payables 108 72
Net change in other operating assets (31) (3)
Net change in other operating liabilities (131) (198)
Total $ (326) $ (316)
v3.25.2
Equity-based compensation (Details) - shares
shares in Millions
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Share-Based Payment Arrangements [Abstract]    
Unvested (in shares) 5.2 4.9
Granted (in shares) 2.4 2.2
Vested (in shares) (1.6) (1.7)
Forfeited (in shares) (0.2) (0.1)
Unvested (in shares) 5.8 5.3
v3.25.2
Acquisitions - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 5 Months Ended 6 Months Ended
Mar. 24, 2025
Mar. 23, 2025
Jan. 16, 2025
Jan. 15, 2025
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2025
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about business combination [line items]                      
Goodwill         $ 9,181   $ 9,181 $ 9,181     $ 8,946
Cash paid for the acquisition               $ 568 $ 0    
Forecast | LENSAR, Inc.                      
Disclosure of detailed information about business combination [line items]                      
Total consideration (up to)                   $ 430  
Aurion Biotech, Inc.                      
Disclosure of detailed information about business combination [line items]                      
Ownership percentage in subsidiary 99.00%                    
Ownership percentage in subsidiary on a fully diluted basis 85.00%       91.20%   91.20% 91.20%      
Ownership percentage in subsidiary held by non-controlling interests on a fully diluted basis 15.00%       8.80%   8.80% 8.80%      
Aurion Biotech, Inc.                      
Disclosure of detailed information about business combination [line items]                      
Investment ownership percentage   40.30%                  
Cylite Pty Ltd.                      
Disclosure of detailed information about business combination [line items]                      
Investment ownership percentage       8.80%              
Ownership percentage in subsidiary     100.00%                
Aurion Biotech, Inc.                      
Disclosure of detailed information about business combination [line items]                      
Percentage of outstanding shares acquired 58.70%                    
Total acquisition date fair value of consideration $ 486                    
Previously-held commercialization rights in intangible assets 36                    
Cash paid at closing 522       $ 522   $ 522 $ 522      
Goodwill 140       140   140 140      
Cash paid for the acquisition 496                    
Previously-held investment in associated company 334       334   334 334      
Equity interest remeasurement fair value gain           $ 136          
Direct acquisition cost 2                    
Reduction in net income from acquired business         17            
Non-controlling interests $ 27       27   27 $ 27      
Aurion Biotech, Inc. | Current marketed products                      
Disclosure of detailed information about business combination [line items]                      
Measurement period adjustments, Intangible assets         5            
Aurion Biotech, Inc. | Acquired IPR&D                      
Disclosure of detailed information about business combination [line items]                      
Measurement period adjustments, Intangible assets         $ (5)            
Cylite Pty Ltd.                      
Disclosure of detailed information about business combination [line items]                      
Percentage of outstanding shares acquired     91.20%                
Total acquisition date fair value of consideration     $ 123                
Cash paid at closing     78                
Goodwill     90                
Cash paid for the acquisition     72                
Previously-held investment in associated company     14                
Equity interest remeasurement fair value gain           $ 6          
Direct acquisition cost     1                
Reduction in net income from acquired business             $ 8        
Contingent consideration, maximum     $ 10                
v3.25.2
Acquisitions - Summary of Purchase Price Allocation (Details) - USD ($)
$ in Millions
3 Months Ended
Jun. 30, 2025
Mar. 24, 2025
Jan. 16, 2025
Dec. 31, 2024
Disclosure of detailed information about business combination [line items]        
Measurement period adjustments, Net identifiable assets acquired $ 0      
Goodwill 9,181     $ 8,946
Aurion Biotech, Inc.        
Disclosure of detailed information about business combination [line items]        
Property, plant and equipment 3 $ 3    
Right-of-use assets 6 6    
Deferred tax assets 43 43    
Other current assets 6 6    
Cash and cash equivalents 26 26    
Non-current lease liabilities (4) (4)    
Non-current financial debts (1) (1)    
Deferred tax liabilities (212) (212)    
Current financial debts (34) (34)    
Current lease liabilities (2) (2)    
Current income tax liabilities (1) (1)    
Trade payables (3) (3)    
Provisions and other current liabilities (14) (14)    
Net identifiable assets acquired 743 743    
Goodwill 140 140    
Non-controlling interests (27) (27)    
Net assets acquired as a result of business combination 856 856    
Cash paid at closing 522 522    
Previously-held investment in associated company 334 334    
Total acquisition date fair value of consideration 856 856    
Total acquisition date fair value of consideration   486    
Aurion Biotech, Inc. | Current marketed products        
Disclosure of detailed information about business combination [line items]        
Intangible assets 110 105    
Measurement period adjustments, Intangible assets 5      
Aurion Biotech, Inc. | Acquired IPR&D        
Disclosure of detailed information about business combination [line items]        
Intangible assets 820 $ 825    
Measurement period adjustments, Intangible assets $ (5)      
Cylite Pty Ltd.        
Disclosure of detailed information about business combination [line items]        
Property, plant and equipment     $ 1  
Right-of-use assets     1  
Inventories     1  
Cash and cash equivalents     6  
Other assets     1  
Deferred tax liabilities     (11)  
Lease liabilities     (1)  
Trade payables     (1)  
Provisions and other current liabilities     (1)  
Net identifiable assets acquired     33  
Goodwill     90  
Net assets acquired as a result of business combination     123  
Cash paid at closing     78  
Cash expected to be paid after closing     2  
Previously-held FVOCI financial investment     11  
Previously-held commercialization rights in intangible assets     9  
Contingent consideration     9  
Previously-held investment in associated company     14  
Total acquisition date fair value of consideration     123  
Cylite Pty Ltd. | Current marketed products        
Disclosure of detailed information about business combination [line items]        
Intangible assets     4  
Cylite Pty Ltd. | Acquired IPR&D        
Disclosure of detailed information about business combination [line items]        
Intangible assets     $ 33  
v3.25.2
Acquisitions - Summary of Movements in Non-Controlling Interests (Details)
$ in Millions
3 Months Ended
Jun. 30, 2025
USD ($)
Non-controlling interests  
Non-controlling interests $ 16
Aurion Biotech, Inc.  
Non-controlling interests (%)  
Non-controlling interests (%) 15.00%
Exchange of outstanding vested options (6.20%)
Non-controlling interests (%) 8.80%
Non-controlling interests  
Non-controlling interests $ 27
Exchange of outstanding vested options (11)
Non-controlling interests $ 16
v3.25.2
Related parties transactions - Additional Information (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Disclosure of associates [line items]    
Long-term convertible notes due from associated companies $ 0 $ 11
Associate One    
Disclosure of associates [line items]    
Investment ownership percentage 21.60% 20.00%
Associate Two    
Disclosure of associates [line items]    
Investment ownership percentage   40.30%
Associate Three    
Disclosure of associates [line items]    
Investment ownership percentage   8.80%
v3.25.2
Related parties transactions - Investments in associated companies (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Investments in associated companies        
Beginning balance     $ 293 $ 10
Purchases     8 0
Share of (loss) from associated companies recognized in Consolidated Income Statement $ (1) $ 0 (15) 0
Gains on fair value remeasurements recognized in Consolidated Income Statement     142 0
Recognition of business combinations     (348) 0
Ending balance $ 80 $ 10 $ 80 $ 10
v3.25.2
Subsequent events (Details) - Major acquisition - Forecast - USD ($)
$ / shares in Units, $ in Millions
Aug. 31, 2026
Sep. 30, 2025
LumiThera, Inc    
Disclosure of non-adjusting events after reporting period [line items]    
Percentage of outstanding equity acquired   100.00%
Acquisition, cash transferred   $ 132
Acquisition consideration   $ 140
STAAR Surgical Company    
Disclosure of non-adjusting events after reporting period [line items]    
Acquisition consideration $ 1,500  
Acquisition consideration, per share (in dollars per share) $ 28.00