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Investments (Credit Loss Expense Incurred) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |  |  |
Gross credit loss expense recognized in net income (loss) | $ (1) | $ (2) | $ (23) | $ (15)
Associated amortization of DAC, VOBA, DSI and DFEL |  |  | 1 | 1
Net credit loss expense recognized in net income (loss) | (1) | (2) | (22) | (14)
Corporate Bonds [Member] |  |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |  |  |
Gross credit loss expense recognized in net income (loss) | (2) | $ (2) | (22) | (13)
RMBS [Member] |  |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |  |  |
Gross credit loss expense recognized in net income (loss) |  |  | $ (1) | (1)
ABS [Member] |  |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |  |  |
Gross credit loss expense recognized in net income (loss) | $ 1 |  |  | $ (1)

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- Definition Debt Securities, Available-for-sale, Allowance for Credit Loss, Associated Amortization + References No definition available. + Details
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- Definition Debt Securities, Available-for-sale, Allowance for Credit Loss, Not Previously Recorded, Before associated amortization. + References No definition available. + Details
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- Definition Debt Securities, Available-for-sale, Allowance for Credit Loss, Not Previously Recorded, Net of associated amortization + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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