Cover Page Cover Page |
Aug. 03, 2021 |
|---|---|
| Entity Information [Line Items] | |
| Document Type | 8-K/A |
| Document Period End Date | Aug. 03, 2021 |
| Entity Registrant Name | CNA FINANCIAL CORPORATION |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 1-5823 |
| Entity Tax Identification Number | 36-6169860 |
| Entity Address, Address Line One | 151 N. Franklin |
| Entity Address, City or Town | Chicago |
| Entity Address, State or Province | IL |
| Entity Address, Postal Zip Code | 60606 |
| City Area Code | 312 |
| Local Phone Number | 822-5000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000021175 |
| Amendment Flag | true |
| Amendment Description | In its Current Report on Form 8-K filed on August 9, 2021 (the “Original Report”), the Registrant reported the resignation of Al Miralles, Executive Vice President and Chief Financial Officer, and the appointment of Larry Haefner as interim Chief Financial Officer, to be effective in September 2021. This Current Report on Form 8-K/A amends the Original Report to provide information about the compensatory arrangements related to the appointment of Mr. Haefner. |
| New York Stock Exchange | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | Common Stock, Par value $2.50 |
| Trading Symbol | "CNA" |
| Security Exchange Name | NYSE |
| Chicago Stock Exchange | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | Common Stock, Par value $2.50 |
| Trading Symbol | "CNA" |
| Security Exchange Name | CHX |