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Equity (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Net investment gains (losses) | $ (42) | $ (96)
Net derivative gains (losses) | (1,921) | (575)
Net investment income | 1,254 | 1,059
Pre-tax adjusted earnings (loss) | (614) | (653)
Income tax (expense) benefit | 123 | 156
Net income (loss) | (519) | (525)
Reclassification out of Accumulated Other Comprehensive Income |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Net income (loss) | (28) | (50)
Reclassification out of Accumulated Other Comprehensive Income | Net unrealized investment gains (losses): |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Net investment gains (losses) | (34) | (68)
Net derivative gains (losses) | (2) | 7
Pre-tax adjusted earnings (loss) | (36) | (61)
Income tax (expense) benefit | 7 | 13
Net income (loss) | (29) | (48)
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Pre-tax adjusted earnings (loss) | 3 | 0
Income tax (expense) benefit | (1) | 0
Net income (loss) | 2 | 0
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives | Interest rate swaps |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Net investment income | 3 | 1
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives | Foreign currency swaps |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Net derivative gains (losses) | 0 | (1)
Reclassification out of Accumulated Other Comprehensive Income | Defined benefit plans adjustment: |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Pre-tax adjusted earnings (loss) | (1) | (3)
Income tax (expense) benefit | 0 | 1
Amortization of net actuarial gains (losses) | (1) | (3)
Amortization of defined benefit plans, net of income tax | $ (1) | $ (2)

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