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DAC AND POLICYHOLDER BONUS INTEREST CREDITS - Changes in Deferred Acquisition Costs (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year $ 5,491 $ 4,243 $ 5,840
Balance, beginning of year 5,491 4,243  
Capitalization of commissions, sales and issue expenses 842 875 669
Amortization:      
Impact of assumptions updates and model changes 43 58 (1,109)
All other (585) 451 (504)
Total amortization (542) (393) (1,613)
Change in unrealized investment gains and losses 2,367 766 (654)
Reclassified to assets HFS 0 0 1
Balance, end of year $ 8,158 5,491 4,243
Balance, end of year   $ 5,491 $ 4,243