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Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (DAC and VOBA) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Deferred Policy Acquisition Costs and Present Value of Future Insurance Profits, Net [Abstract] |  |  |
Beginning Balance of DAC | $ 13,643 | $ 13,446 | $ 14,790
Capitalization of DAC | 2,558 | 2,718 | 3,013
Net investment gains (losses) of DAC and net derivative gains (losses) of DAC | 105 | (100) | (152)
Other expenses of DAC | (1,920) | (2,268) | (2,773)
Total amortization of DAC | (1,815) | (2,368) | (2,925)
Unrealized investment gains (losses) of DAC | 7,166 | 811 | (1,312)
Effect of foreign currency translation and other of DAC | (688) | (861) | 76
Reclassified to assets held-for-sale (1) | 0 | (103) | (196)
Ending Balance of DAC | 20,864 | 13,643 | 13,446
Beginning Balance of VOBA | 2,418 | 2,943 | 3,043
Net investment gains (losses) of VOBA and net derivative gains (losses) of VOBA | 0 | 0 | (2)
Other expenses of VOBA | (116) | (187) | (233)
Total amortization of VOBA | (116) | (187) | (235)
Unrealized investment gains (losses) of VOBA | 17 | 11 | (4)
Effect of foreign currency translation and other of VOBA | (200) | (314) | 139
Reclassified to assets held-for-sale (1) | 0 | (35) | 0
Ending Balance of VOBA | 2,119 | 2,418 | 2,943
Balance at December 31, | $ 22,983 | $ 16,061 | $ 16,389

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