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Shares And Stockholders' Equity (Schedule of Reclassifications Out Of AOCI) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Total realized gain (loss) | $ 85 | $ 629 | $ (97) | $ (43)
Net investment income | 1,576 | 1,458 | 4,670 | 4,005
Interest and debt expense | (73) | (66) | (204) | (218)
Commissions and other expenses | (1,906) | (1,599) | (4,462) | (3,807)
Income (loss) from continuing operations before taxes | 368 | 460 | 1,402 | 334
Income tax benefit (expense) | (50) | (62) | (217) | 22
Net income (loss) | $ 318 | $ 398 | 1,185 | 356
Unrealized Gain (Loss) on AFS Securities [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Total realized gain (loss) |  |  | (4) | (48)
Income (loss) from continuing operations before taxes |  |  | (22) | (6)
Income tax benefit (expense) |  |  | 5 | 1
Net income (loss) |  |  | (17) | (5)
Unrealized Gain (Loss) on AFS Securities [Member] | Associated amortization of DAC, VOBA, DSI and DFEL [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Total realized gain (loss) |  |  | (18) | 42
Unrealized Gain (Loss) on Derivative Instruments [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Nonoperating income expense |  |  | 16 | 38
Income (loss) from continuing operations before taxes |  |  | 15 | 30
Income tax benefit (expense) |  |  | (3) | (6)
Net income (loss) |  |  | 12 | 24
Unrealized Gain (Loss) on Derivative Instruments [Member] | Interest Rate Contracts [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Net investment income |  |  | 2 | 2
Interest and debt expense |  |  | (18) | (16)
Unrealized Gain (Loss) on Derivative Instruments [Member] | Foreign currency contracts [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Total realized gain (loss) |  |  | (2) | 6
Net investment income |  |  | 34 | 46
Unrealized Gain (Loss) on Derivative Instruments [Member] | Associated amortization of DAC, VOBA, DSI and DFEL [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Commissions and other expenses |  |  | $ (1) | $ (8)

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