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Equity - Statutory Results (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Statutory Accounting Practices [Line Items] |  |  |
Statutory Net Income | $ 1,904 | $ 1,700 | $ 253
Statutory Capital | 12,852 | 9,842 |
Group Insurance Policy [Member] |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory Net Income | 513 | 390 | (1,066)
Statutory Capital | 2,644 | 2,407 |
Property and Casualty Insurance Subsidiaries |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory Net Income | 1,391 | 1,114 | 950
Statutory Capital | 10,208 | 7,435 |
Life and Annuity Run-Off Business |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory Net Income | $ 0 | $ 196 | $ 369

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