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Derivative Instruments (Financial Statement Classification and Impact of Derivatives Used in Qualifying and Non-qualifying Hedge Relationships) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Realized Investment Gains (Losses)    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net $ 775 $ 1,492
Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 746 1,473
Net Investment Income    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 73 82
Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Other Income    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 69 286
Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 8 (5)
Interest Expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Credited To Policyholders’ Account Balances    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 15 2
Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Policyholder Benefts    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 8 2
Policyholder Benefts | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
AOCI    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 11 2,367
AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Fair value hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 19 (28)
Fair value hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net (2) (2)
Fair value hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Fair value hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Fair value hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net (192) 324
Fair value hedges | Policyholder Benefts | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net (163) 280
Fair value hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Fair Value Hedged Item | Realized Investment Gains (Losses)    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge (19) 29
Change In Unrealized Gain (Loss) On Hedged Item In Fair Value Net Of Hedging Instrument 0 1
Fair Value Hedged Item | Net Investment Income    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 4 5
Change In Unrealized Gain (Loss) On Hedged Item In Fair Value Net Of Hedging Instrument 2 3
Fair Value Hedged Item | Other Income    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 0 0
Change In Unrealized Gain (Loss) On Hedged Item In Fair Value Net Of Hedging Instrument 0 0
Fair Value Hedged Item | Interest Expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 0 0
Change In Unrealized Gain (Loss) On Hedged Item In Fair Value Net Of Hedging Instrument 0 0
Fair Value Hedged Item | Interest Credited To Policyholders’ Account Balances    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 207 (322)
Change In Unrealized Gain (Loss) On Hedged Item In Fair Value Net Of Hedging Instrument 15 2
Fair Value Hedged Item | Policyholder Benefts    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 173 (278)
Change In Unrealized Gain (Loss) On Hedged Item In Fair Value Net Of Hedging Instrument 8 2
Fair Value Hedged Item | AOCI    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 0 0
Change In Unrealized Gain (Loss) On Hedged Item In Fair Value Net Of Hedging Instrument 2 0
Cash flow hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 29 18
Cash flow hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 71 79
Cash flow hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 53 291
Cash flow hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Cash flow hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Cash flow hedges | Policyholder Benefts | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Cash flow hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 9 2,354
Net investment hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Net investment hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Net investment hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 8 0
Net investment hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Net investment hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Net investment hedges | Policyholder Benefts | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Net investment hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 13
Interest Rate | Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net (5,925) 9,224
Interest Rate | Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Rate | Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Rate | Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Rate | Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Rate | Policyholder Benefts | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Rate | AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Rate | Fair value hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 21 (30)
Interest Rate | Fair value hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net (2) (2)
Interest Rate | Fair value hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Rate | Fair value hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Rate | Fair value hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net (192) 324
Interest Rate | Fair value hedges | Policyholder Benefts | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net (170) 280
Interest Rate | Fair value hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Rate | Fair Value Hedged Item | Realized Investment Gains (Losses)    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge (20) 30
Interest Rate | Fair Value Hedged Item | Net Investment Income    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 4 5
Interest Rate | Fair Value Hedged Item | Other Income    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 0 0
Interest Rate | Fair Value Hedged Item | Interest Expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 0 0
Interest Rate | Fair Value Hedged Item | Interest Credited To Policyholders’ Account Balances    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 207 (322)
Interest Rate | Fair Value Hedged Item | Policyholder Benefts    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 180 (278)
Interest Rate | Fair Value Hedged Item | AOCI    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 0 0
Interest Rate | Cash flow hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 5 (1)
Interest Rate | Cash flow hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Rate | Cash flow hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Rate | Cash flow hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Rate | Cash flow hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Rate | Cash flow hedges | Policyholder Benefts | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Interest Rate | Cash flow hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net (47) 52
Currency | Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net (278) 333
Currency | Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 8 (7)
Currency | Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Policyholder Benefts | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Fair value hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net (2) 2
Currency | Fair value hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Fair value hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Fair value hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Fair value hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Fair value hedges | Policyholder Benefts | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 7 0
Currency | Fair value hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Fair Value Hedged Item | Realized Investment Gains (Losses)    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 1 (1)
Currency | Fair Value Hedged Item | Net Investment Income    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 0 0
Currency | Fair Value Hedged Item | Other Income    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 0 0
Currency | Fair Value Hedged Item | Interest Expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 0 0
Currency | Fair Value Hedged Item | Interest Credited To Policyholders’ Account Balances    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 0 0
Currency | Fair Value Hedged Item | Policyholder Benefts    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge (7) 0
Currency | Fair Value Hedged Item | AOCI    
Derivative Instruments, Gain (Loss) [Line Items]    
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 0 0
Currency | Amortization of Gain(loss) excluded from assessment of effectiveness | Realized Investment Gains (Losses)    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0  
Currency | Amortization of Gain(loss) excluded from assessment of effectiveness | Net Investment Income    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0  
Currency | Amortization of Gain(loss) excluded from assessment of effectiveness | Other Income    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0  
Currency | Amortization of Gain(loss) excluded from assessment of effectiveness | Interest Expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0  
Currency | Amortization of Gain(loss) excluded from assessment of effectiveness | Interest Credited To Policyholders’ Account Balances    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0  
Currency | Amortization of Gain(loss) excluded from assessment of effectiveness | Policyholder Benefts    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net (2)  
Currency | Amortization of Gain(loss) excluded from assessment of effectiveness | AOCI    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 2  
Currency | Cash flow hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net (1) 1
Currency | Cash flow hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Cash flow hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Cash flow hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Cash flow hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Cash flow hedges | Policyholder Benefts | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Cash flow hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net (17) 102
Currency | Net investment hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Net investment hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Net investment hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 8 0
Currency | Net investment hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Net investment hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Net investment hedges | Policyholder Benefts | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency | Net investment hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 13
Currency/Interest Rate | Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 282 816
Currency/Interest Rate | Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency/Interest Rate | Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 2
Currency/Interest Rate | Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency/Interest Rate | Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency/Interest Rate | Policyholder Benefts | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency/Interest Rate | AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency/Interest Rate | Cash flow hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 25 18
Currency/Interest Rate | Cash flow hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 71 79
Currency/Interest Rate | Cash flow hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 53 291
Currency/Interest Rate | Cash flow hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency/Interest Rate | Cash flow hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency/Interest Rate | Cash flow hedges | Policyholder Benefts | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency/Interest Rate | Cash flow hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 73 2,200
Currency/Interest Rate | Net investment hedges | Realized Investment Gains (Losses) | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency/Interest Rate | Net investment hedges | Net Investment Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency/Interest Rate | Net investment hedges | Other Income | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency/Interest Rate | Net investment hedges | Interest Expense | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency/Interest Rate | Net investment hedges | Interest Credited To Policyholders’ Account Balances | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency/Interest Rate | Net investment hedges | Policyholder Benefts | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Currency/Interest Rate | Net investment hedges | AOCI | Derivatives Designated as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Credit | Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 4 (41)
Credit | Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Credit | Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Credit | Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Credit | Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Credit | Policyholder Benefts | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Credit | AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Equity | Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net (989) 5,436
Equity | Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Equity | Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Equity | Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Equity | Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Equity | Policyholder Benefts | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Equity | AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Other | Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 1 0
Other | Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Other | Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Other | Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Other | Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Other | Policyholder Benefts | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Other | AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Embedded Derivatives | Realized Investment Gains (Losses) | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 7,651 (14,295)
Embedded Derivatives | Net Investment Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Embedded Derivatives | Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Embedded Derivatives | Interest Expense | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Embedded Derivatives | Interest Credited To Policyholders’ Account Balances | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Embedded Derivatives | Policyholder Benefts | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net 0 0
Embedded Derivatives | AOCI | Derivatives Not Qualifying as Hedge Accounting Instruments:    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments Gain (Loss) Recognized In Income Net $ 0 $ 0