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Derivative Instruments (Non Hedging Derivatives and Embedded Derivatives Effect on Income Statement) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Affect Of Non Hedging Derivatives [Line Items] |  |  |
Total investment related gains (losses), net | $ 560 | $ (33) | $ 91
Other revenues | (447) | (360) | (392)
Gain Loss On Investments Related To Change In Fair Value Of Derivatives Excluding Embedded Derivatives | (12) | 59 | 4
Indexed annuity products | 700 | 704 | 697
Not Designated as Hedging Instrument [Member] |  |  |
Income Affect Of Non Hedging Derivatives [Line Items] |  |  |
Total investment related gains (losses), net | 98 | (25) | (37)
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] |  |  |
Income Affect Of Non Hedging Derivatives [Line Items] |  |  |
Total investment related gains (losses), net | (34) | 76 | 65
Not Designated as Hedging Instrument [Member] | Future [Member] |  |  |
Income Affect Of Non Hedging Derivatives [Line Items] |  |  |
Total investment related gains (losses), net | (24) | (47) | (46)
Not Designated as Hedging Instrument [Member] | Currency Swap [Member] |  |  |
Income Affect Of Non Hedging Derivatives [Line Items] |  |  |
Total investment related gains (losses), net | 20 | (7) | 0
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] |  |  |
Income Affect Of Non Hedging Derivatives [Line Items] |  |  |
Total investment related gains (losses), net | (20) | 5 | 1
Not Designated as Hedging Instrument [Member] | Consumer Price Index Swap [Member] |  |  |
Income Affect Of Non Hedging Derivatives [Line Items] |  |  |
Total investment related gains (losses), net | 46 | 16 | (18)
Not Designated as Hedging Instrument [Member] | Credit Default Swap [Member] |  |  |
Income Affect Of Non Hedging Derivatives [Line Items] |  |  |
Total investment related gains (losses), net | 33 | 16 | 30
Not Designated as Hedging Instrument [Member] | Equity [Member] |  |  |
Income Affect Of Non Hedging Derivatives [Line Items] |  |  |
Total investment related gains (losses), net | (33) | 0 | (40)
Not Designated as Hedging Instrument [Member] | Longevity Swap [Member] |  |  |
Income Affect Of Non Hedging Derivatives [Line Items] |  |  |
Other revenues | 0 | 0 | (13)
Not Designated as Hedging Instrument [Member] | Mortality Swap [Member] |  |  |
Income Affect Of Non Hedging Derivatives [Line Items] |  |  |
Other revenues | 0 | 0 | (1)
Not Designated as Hedging Instrument [Member] | Embedded Derivatives In Modified Coinsurance Or Funds Withheld Arrangements [Member] |  |  |
Income Affect Of Non Hedging Derivatives [Line Items] |  |  |
Total investment related gains (losses), net | 107 | (62) | 11
Not Designated as Hedging Instrument [Member] | Embedded Derivatives In Indexed Annuity [Member] |  |  |
Income Affect Of Non Hedging Derivatives [Line Items] |  |  |
Indexed annuity products | 10 | 30 | 57
Not Designated as Hedging Instrument [Member] | Embedded Derivatives In Variable Annuity [Member] |  |  |
Income Affect Of Non Hedging Derivatives [Line Items] |  |  |
Total investment related gains (losses), net | $ (7) | $ 8 | $ 5

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