Derivative Instruments (Financial Statement Classification and Impact of Derivatives Used in Qualifying and Non-qualifying Hedge Relationships) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments Gain Loss [Line Items]
Non-derivative AOCI Net Investment Hedge Before Tax	$ 28	$ 134	$ 25
PRISMIC Embedded Derivative, Gain (Loss) on Derivative, Net	(508)
Gain (Loss) on Investments
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	$ (2,220)	$ (2,834)	$ (117)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Realized Investment Gains (Losses)	Realized Investment Gains (Losses)	Realized Investment Gains (Losses)
Gain (Loss) on Investments | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	$ (2,281)	$ (2,969)	$ (211)
Market Risk Benefit, Increase (Decrease)
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	$ (2,586)	$ (5,080)	$ (4,910)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Change in value of market risk benefits, net of related hedging gains (losses)	Change in value of market risk benefits, net of related hedging gains (losses)	Change in value of market risk benefits, net of related hedging gains (losses)
Market Risk Benefit, Increase (Decrease) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	$ (2,586)	$ (5,080)	$ (4,910)
Investment Income
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	$ 312	$ 312	$ 282
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Net investment income	Net investment income	Net investment income
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	$ 0
Other Income
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	$ (189)	$ 480	$ 183
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Income	Other Income	Other Income
Other Income | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	$ 0	$ 3	$ 2
Interest Expense
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	$ 0	$ 0	$ 0
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	General and administrative expenses(1)(2)	General and administrative expenses(1)(2)	General and administrative expenses(1)(2)
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	$ 0
Interest Credited To Policyholder Account Balances
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	$ (29)	$ 12	$ 35
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest credits to policyholders' account balances	Interest credits to policyholders' account balances	Interest credits to policyholders' account balances
Interest Credited To Policyholder 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	$ 0
Policyholder Benefts
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	$ (35)	$ 7	$ 17
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Policyholders’ benefits	Policyholders’ benefits	Policyholders’ benefits
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	$ 0
Accumulated Other Comprehensive Income (Loss)
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	$ (1,741)	$ 1,580	$ 1,132
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other comprehensive income (loss), net of tax	Other comprehensive income (loss), net of tax	Other comprehensive income (loss), net of tax
Accumulated Other Comprehensive Income (Loss) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	$ 0	$ 0	$ 0
Fair value hedges | Gain (Loss) on Investments | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	1	11	12
Fair value hedges | Market Risk Benefit, Increase (Decrease) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Fair value hedges | Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(1)	(7)	(9)
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	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	0
Fair value hedges | Interest Credited To Policyholder Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(31)	(375)	(98)
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	65	(662)	(67)
Fair value hedges | Accumulated Other Comprehensive Income (Loss) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Fair Value Hedged Item | Gain (Loss) on Investments
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(1)	(8)	(17)
Change In Unrealized Gain (Loss) On Hedged Item In Fair Value Net Of Hedging Instrument	0	3	(5)
Fair Value Hedged Item | Market Risk Benefit, Increase (Decrease)
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	0	0	0
Change In Unrealized Gain (Loss) On Hedged Item In Fair Value Net Of Hedging Instrument	0	0	0
Fair Value Hedged Item | Investment Income
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	14	23	18
Change In Unrealized Gain (Loss) On Hedged Item In Fair Value Net Of Hedging Instrument	13	16	9
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	0
Change In Unrealized Gain (Loss) On Hedged Item In Fair Value Net Of Hedging Instrument	0	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	0
Change In Unrealized Gain (Loss) On Hedged Item In Fair Value Net Of Hedging Instrument	0	0	0
Fair Value Hedged Item | Interest Credited To Policyholder Account Balances
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	2	387	133
Change In Unrealized Gain (Loss) On Hedged Item In Fair Value Net Of Hedging Instrument	(29)	12	35
Fair Value Hedged Item | Policyholder Benefts
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(92)	673	90
Change In Unrealized Gain (Loss) On Hedged Item In Fair Value Net Of Hedging Instrument	(35)	7	17
Fair Value Hedged Item | Accumulated Other Comprehensive Income (Loss)
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	0	0	0
Change In Unrealized Gain (Loss) On Hedged Item In Fair Value Net Of Hedging Instrument	(6)	(19)	(46)
Cash flow hedges | Gain (Loss) on Investments | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	61	132	99
Cash flow hedges | Market Risk Benefit, Increase (Decrease) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Cash flow hedges | Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	299	296	273
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	(189)	477	181
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	0
Cash flow hedges | Interest Credited To Policyholder Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	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	0
Cash flow hedges | Accumulated Other Comprehensive Income (Loss) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(1,747)	1,597	1,187
Net investment hedges | Gain (Loss) on Investments | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Net investment hedges | Market Risk Benefit, Increase (Decrease) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Net investment hedges | Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	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	0	0	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	0
Net investment hedges | Interest Credited To Policyholder Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	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	0
Net investment hedges | Accumulated Other Comprehensive Income (Loss) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	12	2	(9)
Interest Rate | Gain (Loss) on Investments | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(285)	(3,410)	717
Interest Rate | Market Risk Benefit, Increase (Decrease) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(1,657)	(6,483)	(2,592)
Interest Rate | 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	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	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	0
Interest Rate | Interest Credited To Policyholder 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	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	0
Interest Rate | Accumulated Other Comprehensive Income (Loss) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Interest Rate | Fair value hedges | Gain (Loss) on Investments | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	2	39	20
Interest Rate | Fair value hedges | Market Risk Benefit, Increase (Decrease) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Interest Rate | Fair value hedges | Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	(5)	(9)
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	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	0
Interest Rate | Fair value hedges | Interest Credited To Policyholder Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(31)	(375)	(98)
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	(39)	(438)	(73)
Interest Rate | Fair value hedges | Accumulated Other Comprehensive Income (Loss) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Interest Rate | Fair Value Hedged Item | Gain (Loss) on Investments
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(2)	(39)	(24)
Interest Rate | Fair Value Hedged Item | Market Risk Benefit, Increase (Decrease)
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	0	0	0
Interest Rate | Fair Value Hedged Item | Investment Income
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	13	14	16
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	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	0
Interest Rate | Fair Value Hedged Item | Interest Credited To Policyholder Account Balances
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	2	387	133
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	10	448	96
Interest Rate | Fair Value Hedged Item | Accumulated Other Comprehensive Income (Loss)
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	0	0	0
Interest Rate | Cash flow hedges | Gain (Loss) on Investments | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(21)	(4)	(2)
Interest Rate | Cash flow hedges | Market Risk Benefit, Increase (Decrease) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Interest Rate | Cash flow hedges | Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(16)	(3)	2
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	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	0
Interest Rate | Cash flow hedges | Interest Credited To Policyholder Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	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	0
Interest Rate | Cash flow hedges | Accumulated Other Comprehensive Income (Loss) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	23	(217)	(13)
Currency | Gain (Loss) on Investments | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(567)	(400)	(364)
Currency | Market Risk Benefit, Increase (Decrease) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Currency | 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	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	3	(3)	(3)
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	0
Currency | Interest Credited To Policyholder 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	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	0
Currency | Accumulated Other Comprehensive Income (Loss) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Currency | Fair value hedges | Gain (Loss) on Investments | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(1)	(28)	(8)
Currency | Fair value hedges | Market Risk Benefit, Increase (Decrease) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Currency | Fair value hedges | Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(1)	(2)	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	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	0
Currency | Fair value hedges | Interest Credited To Policyholder Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	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	104	(224)	6
Currency | Fair value hedges | Accumulated Other Comprehensive Income (Loss) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Currency | Fair Value Hedged Item | Gain (Loss) on Investments
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	1	31	7
Currency | Fair Value Hedged Item | Market Risk Benefit, Increase (Decrease)
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	0	0	0
Currency | Fair Value Hedged Item | Investment Income
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	1	9	2
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	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	0
Currency | Fair Value Hedged Item | Interest Credited To Policyholder Account Balances
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	0	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	(102)	225	(6)
Currency | Fair Value Hedged Item | Accumulated Other Comprehensive Income (Loss)
Derivative Instruments Gain Loss [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	0	0	0
Currency | Amortization of Gain(loss) excluded from assessment of effectiveness | Gain (Loss) on Investments
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Currency | Amortization of Gain(loss) excluded from assessment of effectiveness | Market Risk Benefit, Increase (Decrease)
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Currency | Amortization of Gain(loss) excluded from assessment of effectiveness | Investment Income
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	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	0	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	0	0
Currency | Amortization of Gain(loss) excluded from assessment of effectiveness | Interest Credited To Policyholder Account Balances
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	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	(8)	(4)	(6)
Currency | Amortization of Gain(loss) excluded from assessment of effectiveness | Accumulated Other Comprehensive Income (Loss)
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(6)	(19)	(46)
Currency | Cash flow hedges | Gain (Loss) on Investments | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	8	15	(4)
Currency | Cash flow hedges | Market Risk Benefit, Increase (Decrease) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Currency | Cash flow hedges | Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	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	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	0
Currency | Cash flow hedges | Interest Credited To Policyholder Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	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	0
Currency | Cash flow hedges | Accumulated Other Comprehensive Income (Loss) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(122)	191	48
Currency | Net investment hedges | Gain (Loss) on Investments | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Currency | Net investment hedges | Market Risk Benefit, Increase (Decrease) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Currency | Net investment hedges | Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	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	0	0	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	0
Currency | Net investment hedges | Interest Credited To Policyholder Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	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	0
Currency | Net investment hedges | Accumulated Other Comprehensive Income (Loss) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	12	2	(9)
Currency/Interest Rate | Gain (Loss) on Investments | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(211)	854	802
Currency/Interest Rate | Market Risk Benefit, Increase (Decrease) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Currency/Interest Rate | 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	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	(3)	6	5
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	0
Currency/Interest Rate | Interest Credited To Policyholder 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	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	0
Currency/Interest Rate | Accumulated Other Comprehensive Income (Loss) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Currency/Interest Rate | Cash flow hedges | Gain (Loss) on Investments | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	74	121	105
Currency/Interest Rate | Cash flow hedges | Market Risk Benefit, Increase (Decrease) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Currency/Interest Rate | Cash flow hedges | Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	315	299	271
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	(189)	477	181
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	0
Currency/Interest Rate | Cash flow hedges | Interest Credited To Policyholder Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	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	0
Currency/Interest Rate | Cash flow hedges | Accumulated Other Comprehensive Income (Loss) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(1,648)	1,623	1,152
Currency/Interest Rate | Net investment hedges | Gain (Loss) on Investments | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Currency/Interest Rate | Net investment hedges | Market Risk Benefit, Increase (Decrease) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Currency/Interest Rate | Net investment hedges | Investment Income | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	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	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	0
Currency/Interest Rate | Net investment hedges | Interest Credited To Policyholder Account Balances | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	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	0
Currency/Interest Rate | Net investment hedges | Accumulated Other Comprehensive Income (Loss) | Derivatives Designated as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Credit | Gain (Loss) on Investments | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	164	5	61
Credit | Market Risk Benefit, Increase (Decrease) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Credit | 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	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	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	0
Credit | Interest Credited To Policyholder 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	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	0
Credit | Accumulated Other Comprehensive Income (Loss) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Equity | Gain (Loss) on Investments | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	1,751	6	(283)
Equity | Market Risk Benefit, Increase (Decrease) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(929)	1,403	(2,318)
Equity | 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	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	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	0
Equity | Interest Credited To Policyholder 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	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	0
Equity | Accumulated Other Comprehensive Income (Loss) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Other Contract | Gain (Loss) on Investments | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	2	1
Other Contract | Market Risk Benefit, Increase (Decrease) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Other Contract | 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	0
Other Contract | 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	0
Other Contract | 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	0
Other Contract | Interest Credited To Policyholder 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	0
Other Contract | 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	0
Other Contract | Accumulated Other Comprehensive Income (Loss) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Embedded Derivative Financial Instruments | Gain (Loss) on Investments | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	(3,133)	(26)	(1,145)
Embedded Derivative Financial Instruments | Market Risk Benefit, Increase (Decrease) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	0	0	0
Embedded Derivative Financial Instruments | 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	0
Embedded Derivative Financial Instruments | 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	0
Embedded Derivative Financial Instruments | 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	0
Embedded Derivative Financial Instruments | Interest Credited To Policyholder 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	0
Embedded Derivative Financial Instruments | 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	0
Embedded Derivative Financial Instruments | Accumulated Other Comprehensive Income (Loss) | Derivatives Not Qualifying as Hedge Accounting Instruments:
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain (Loss) Recognized In Income Net	$ 0	$ 0	$ 0