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Reinsurance (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Ceded Credit Risk [Line Items]      
Reinsurance ACL and deposit assets $ 188 $ 190  
Maximum retention per single insured life on fixed and VUL insurance contracts $ 20    
Percent of mortality risk reinsured on newly issued non-term life insurance contracts 20.00%    
Swiss Re [Member]      
Ceded Credit Risk [Line Items]      
Reinsurance receivable $ 1,100 1,200  
Trust funded to support reinsurance receivable 1,000 1,200  
Liabilities for reinsurance related embedded derivatives 143 31  
LNBAR [Member]      
Ceded Credit Risk [Line Items]      
Reinsurance Recoverables, Gross 22,800 18,800  
Reinsurance receivable 2,900 2,700  
Trust funded to support reinsurance receivable 3,000 3,200  
Protective [Member]      
Ceded Credit Risk [Line Items]      
Reinsurance Recoverables, Gross 10,700 11,300  
Protective [Member] | Ceded Credit Risk, Secured [Member]      
Ceded Credit Risk [Line Items]      
Reinsurance Recoverables, Gross 14,000 15,200  
Athene Holding Ltd. [Member]      
Ceded Credit Risk [Line Items]      
Deposit assets 5,000 5,800  
Amount of amortization, after-tax, of deferred gain on business sold 26 29 $ 30
Reserves associated with modified coinsurance reinsurance arrangements 5,404 $ 6,144  
Letter of credit 146    
Athene Holding Ltd. [Member] | Ceded Credit Risk, Secured [Member]      
Ceded Credit Risk [Line Items]      
Reserves associated with modified coinsurance reinsurance arrangements 157    
Resolution Life [Member]      
Ceded Credit Risk [Line Items]      
Reinsurance receivable 4,700    
Deferred gain on business sold through reinsurance 10    
Resolution Life [Member] | Ceded Credit Risk, Secured [Member]      
Ceded Credit Risk [Line Items]      
Reinsurance Recoverables, Gross $ 4,100