| Cover Document and Entity Information | May 31, 2024 |
| Document Type | 8-K |
| Document Period End Date | May 31, 2024 |
| Entity Registrant Name | THE HARTFORD FINANCIAL SERVICES GROUP, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-13958 |
| Entity Tax Identification Number | 13-3317783 |
| Entity Address, Address Line One | One Hartford Plaza |
| Entity Address, City or Town | Hartford |
| Entity Address, State or Province | CT |
| Entity Address, Postal Zip Code | 06155 |
| City Area Code | (860) |
| Local Phone Number | 547-5000 |
| 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 | 0000874766 |
| Amendment Flag | false |
| Common Stock, par value $0.01 per share [Member] | |
| Title of 12(b) Security | Common Stock, par value $0.01 per share |
| Trading Symbol | HIG |
| Security Exchange Name | NYSE |
| 6.10% Notes due October 1, 2041 [Member] | |
| Title of 12(b) Security | 6.10% Notes due October 1, 2041 |
| Trading Symbol | HIG 41 |
| Security Exchange Name | NYSE |
| Depositary Shares, Each Representing a 1/1,00th Interest in a Share of 6.000% Non-Cumulative Preferred Stock, Series G, par value $0.01 per share [Member] | |
| Title of 12(b) Security | Depositary Shares, Each Representing a 1/1,000th Interest in a Share of 6.000% Non-Cumulative Preferred Stock, Series G, par value $0.01 per share |
| Trading Symbol | HIG PR G |
| Security Exchange Name | NYSE |
