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FAIR VALUE DISCLOSURES - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Fair Value Inputs Assets Quantitative Information 1 [Line Items]    
Fair value adjustments on GMIB asset $ 74 $ 107
Fair value adjustments on amounts due from reinsurers 151 210
AFS fixed maturities transferred from Level 3 to Level 2 200 785
AFS fixed maturities transferred from Level 2 to Level 3 $ 213 $ 27
Fair value measurement with unobservable inputs reconciliation recurring basis asset transfers percentage 12.20% 6.20%
Nonrecurring | Level 3    
Fair Value Inputs Assets Quantitative Information 1 [Line Items]    
Investments, fair value disclosure $ 1,000 $ 635