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Investments (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Gain (Loss) on Securities [Line Items] |  |  |
Reduction of net unrealized gains on investments included in AOCI due to shadow adjustments | $ 1,394 |  | $ 2,477
Notional value | 268 |  | 270
Derivative liability, fair value, gross liability | 16 |  | 12
Commitments to purchase or fund privately placed debt securities | 1,280 |  |
Commitments to sell various privately placed debt securities | 65 |  |
Common Stock |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Equity securities, FV-NI, gain (loss) | (5) | $ 13 |
Non-redeemable preferred stock |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Equity securities, FV-NI, gain (loss) | 38 | 2 |
Mortgage loans |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Financing receivable, accrued interest, after allowance for credit loss | 3 |  |
Fixed maturity securities |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Debt securities, available-for-sale, accrued interest, after allowance for credit loss | $ 389 | $ 389 | $ 369

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