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Intangibles - Narrative (Details) - USD ($)
$ in Millions
5 Months Ended 7 Months Ended 12 Months Ended
May 31, 2020
Dec. 31, 2020
Dec. 31, 2022
Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]        
Amortization of intangible assets $ 1 $ 17 $ 25 $ 28
Expected amortization, 2023     29  
Expected amortization, 2024     26  
Expected amortization, 2025     24  
Expected amortization, 2026     23  
Expected amortization, 2027     22  
VOBA        
Finite-Lived Intangible Assets [Line Items]        
Adjustment for net unrealized investment gains (losses)     $ (430) 232
VOBA | Minimum        
Finite-Lived Intangible Assets [Line Items]        
Interest accrual rate utilized to calculate accretion of interest     0.00%  
VOBA | Maximum        
Finite-Lived Intangible Assets [Line Items]        
Interest accrual rate utilized to calculate accretion of interest     4.71%  
DAC        
Finite-Lived Intangible Assets [Line Items]        
Adjustment for net unrealized investment gains (losses)     $ (143) 39
DSI        
Finite-Lived Intangible Assets [Line Items]        
Deferred sales inducement, unrealized investment gains (losses)     $ (61) $ 7