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Pay vs Performance Disclosure - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pay vs Performance Disclosure [Table] |  |  |
Pay vs Performance [Table Text Block] |
|  |  |  |  | Value of Initial Fixed $100 Investment Based on:(4) |  |
Year | Summary Compensation Table (SCT) Total for CEO ($)(1) | Compensation Actually Paid (CAP) to CEO ($)(2) | Average SCT Total for Other NEOs ($)(1) | Average CAP to Other NEOs ($)(3) | Company TSR ($) | Peer Group TSR ($) | Net Income ($ in millions) | Compensation Core Earnings ($ in millions) (5)
2022 | 16,086,469 |  | 26,534,011 |  | 5,409,204 |  | 8,245,362 |  | 135 |  | 145 |  | 1,815 |  | 2,561 |
2021 | 15,824,348 |  | 38,804,005 |  | 4,793,726 |  | 10,351,296 |  | 120 |  | 132 |  | 2,365 |  | 2,163 |
2020 | 11,806,195 |  | (783,220) |  | 3,927,876 |  | 524,850 |  | 83 |  | 100 |  | 1,737 |  | 1,767 |
Company Selected Measure Name | Compensation Core Earnings |  |
Named Executive Officers, Footnote [Text Block] | (1) The CEO for each year reported was Christopher Swift. The names of each of the other NEOs included for purposes of calculating the average amounts in each applicable year are as follows: (i) for 2022, Beth Costello, Douglas Elliot, David Robinson, and Deepa Soni; (ii) for 2021, Beth Costello, Douglas Elliot, David Robinson, Amy Stepnowski, and William Bloom; and (iii) for 2020, Beth Costello, Douglas Elliot, David Robinson, William Bloom, and Brion Johnson. |  |
Peer Group Issuers, Footnote [Text Block] | (4) Reflects the value of a fixed $100 investment on December 31, 2019. The peer group used for this purpose is the published industry index: S&P Insurance Composite Index, the same peer group used for purposes of the performance graph included in the Company’s Annual Reports on Form 10-K for each of the fiscal years ended December 31, 2022, 2021, and 2020. |  |
PEO Total Compensation Amount | $ 16,086,469 | $ 15,824,348 | $ 11,806,195
PEO Actually Paid Compensation Amount | $ 26,534,011 | 38,804,005 | (783,220)
Adjustment To PEO Compensation, Footnote [Text Block] | (2) In accordance with the requirements of Item 402(v) of Regulation S-K, the following adjustments were made to the CEO's total compensation for each year to determine the compensation actually paid. For purposes of the pension valuation adjustments shown below, there was no pension service or prior service cost.
Year | SCT Total ($) | Less: Change in Pension Value ($) | Less: Stock Awards from SCT and Option Awards from SCT ($) | Year-End Value of Unvested Equity Awards and Applicable Dividend Equivalents Granted in the Year ($) | Change in Value of Unvested Equity Awards and Applicable Dividend Equivalents Granted in Prior Years ($) | Vesting Date Value of Equity Awards and Applicable Dividend Equivalents Granted and Vested in the Year ($) | Change in Value of Equity Awards and Applicable Dividend Equivalents Granted in Prior Years Which Vested in the Year ($) | CAP ($)
2022 | 16,086,469 |  | — |  | 10,153,500 |  | 14,890,747 |  | 5,123,290 |  | — |  | 587,005 |  | 26,534,011 |
2021 | 15,824,348 |  | 8,184 |  | 9,626,475 |  | 19,016,242 |  | 9,006,971 |  | — |  | 4,591,103 |  | 38,804,005 |
2020 | 11,806,195 |  | 33,824 |  | 7,990,850 |  | 6,834,642 |  | (5,693,269) |  | — |  | (5,706,114) |  | (783,220) |
Non-PEO NEO Average Total Compensation Amount | $ 5,409,204 | 4,793,726 | 3,927,876
Non-PEO NEO Average Compensation Actually Paid Amount | $ 8,245,362 | 10,351,296 | 524,850
Adjustment to Non-PEO NEO Compensation Footnote [Text Block] | (3) In accordance with the requirements of Item 402(v) of Regulation S-K, the following adjustments were made to average total compensation for the NEOs as a group (excluding the CEO) for each year to determine the compensation actually paid, using the same methodology described above in footnote 2. For purposes of the pension valuation adjustments shown below, there was no pension service or prior service cost.
Year | SCT Total ($) | Less: Change in Pension Value ($) | Less: Stock Awards from SCT and Option Awards from SCT ($) | Year-End Value of Unvested Equity Awards and Applicable Dividend Equivalents Granted in the Year ($) | Change in Value of Unvested Equity Awards and Applicable Dividend Equivalents Granted in Prior Years ($) | Vesting Date Value of Equity Awards and Applicable Dividend Equivalents Granted and Vested in the Year ($) (a) | Change in Value of Equity Awards and Applicable Dividend Equivalents Granted in Prior Years Which Vested in the Year ($) | CAP ($)
2022 | 5,409,204 |  | — |  | 2,842,980 |  | 3,231,047 |  | 1,053,592 |  | 938,364 |  | 456,135 |  | 8,245,362 |
2021 | 4,793,726 |  | 1,170 |  | 2,362,389 |  | 4,335,398 |  | 1,972,862 |  | 340,965 |  | 1,271,904 |  | 10,351,296 |
2020 | 3,927,876 |  | 21,586 |  | 2,164,110 |  | 1,718,080 |  | (1,391,173) |  | 132,902 |  | (1,677,139) |  | 524,850 |
(a) Equity awards vest during the year granted only in the case of retirement. Retirements occurred in 2022, 2021, and 2020 for Messrs. Elliot, Bloom, and Johnson, respectively. |  |
Total Shareholder Return Amount | $ 135 | 120 | 83
Peer Group Total Shareholder Return Amount | 145 | 132 | 100
Net Income (Loss) | $ 1,815,000,000 | $ 2,365,000,000 | $ 1,737,000,000
Company Selected Measure Amount | 2,561,000,000 | 2,163,000,000 | 1,767,000,000
PEO Name | Christopher Swift |  |
Additional 402(v) Disclosure [Text Block] | (5) The Compensation Core Earnings definition and a reconciliation from GAAP net income to Compensation Core Earnings for each year in the table are provided in Appendix A. |  |
Measure [Axis]: 1 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | Compensation Core Earnings |  |
Measure [Axis]: 2 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | Compensation Core ROE |  |
Measure [Axis]: 3 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | TSR |  |
PEO [Member] | Change in Pension Value [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | $ 0 | $ 8,184 | $ 33,824
PEO [Member] | Stock Awards and Option Awards [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 10,153,500 | 9,626,475 | 7,990,850
PEO [Member] | Year-End Value of Unvested Equity Awards and Applicable Dividend Equivalents Granted in the Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 14,890,747 | 19,016,242 | 6,834,642
PEO [Member] | Change in Value of Unvested Equity Awards and Applicable Dividend Equivalents Granted in Prior Years [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 5,123,290 | 9,006,971 | (5,693,269)
PEO [Member] | Vesting Date Value of Equity Awards and Applicable Dividend Equivalents Granted and Vested in the Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 0 | 0 | 0
PEO [Member] | Change in Value of Equity Awards and Applicable Dividend Equivalents Granted in Prior Years Which Vested in the Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 587,005 | 4,591,103 | (5,706,114)
Non-NEOs [Member] | Change in Pension Value [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 0 | 1,170 | 21,586
Non-NEOs [Member] | Stock Awards and Option Awards [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 2,842,980 | 2,362,389 | 2,164,110
Non-NEOs [Member] | Year-End Value of Unvested Equity Awards and Applicable Dividend Equivalents Granted in the Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 3,231,047 | 4,335,398 | 1,718,080
Non-NEOs [Member] | Change in Value of Unvested Equity Awards and Applicable Dividend Equivalents Granted in Prior Years [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 1,053,592 | 1,972,862 | (1,391,173)
Non-NEOs [Member] | Vesting Date Value of Equity Awards and Applicable Dividend Equivalents Granted and Vested in the Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 938,364 | 340,965 | 132,902
Non-NEOs [Member] | Change in Value of Equity Awards and Applicable Dividend Equivalents Granted in Prior Years Which Vested in the Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | $ 456,135 | $ 1,271,904 | $ (1,677,139)

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