Fair Value (Unobservable Input Reconciliation) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Consolidated Securitization Entities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	$ 10	$ 11	$ 12	$ 0
OCI	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	(1)	(2)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	1	0	14
Transfers out of Level 3	0	0	(1)	0
Balance, end of period	10	12	10	12
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	(12)	(15)	(13)	(28)
OCI	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	1	1	2	14
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	(11)	(15)	(11)	(15)
Consolidated Securitization Entities | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Consolidated Securitization Entities | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	(1)	0	(1)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	(1)	0	(1)
Consolidated Securitization Entities | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Consolidated Securitization Entities | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Interest rate contracts
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	18	36	63	13
OCI	7	20	2	69
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	(1)	(2)	(1)	(2)
Settlements	0	2	(31)	(49)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	25	47	25	47
Interest rate contracts | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Interest rate contracts | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Interest rate contracts | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	1	0	1
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	1	(9)	(8)	16
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	1	0	1
Interest rate contracts | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Foreign currency exchange rate contracts
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	(76)	(3)	(68)	(11)
OCI	0	2	1	2
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	24	15	40	14
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	(145)	(54)	(145)	(54)
Foreign currency exchange rate contracts | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Foreign currency exchange rate contracts | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Foreign currency exchange rate contracts | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(99)	(52)	(107)	(45)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	(93)	(68)	(118)	(59)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(99)	(52)	(107)	(45)
Foreign currency exchange rate contracts | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Credit contracts
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	9	17	12	29
OCI	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	(1)	0	(4)
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	4	8	4	8
Credit contracts | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Credit contracts | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Credit contracts | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(4)	(8)	(6)	(15)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	(5)	(8)	(8)	(17)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(4)	(8)	(6)	(15)
Credit contracts | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Equity market contracts
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	(323)	(395)	(307)	(317)
OCI	0	2	0	2
Purchases	0	0	4	4
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	9	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	(323)	(346)	(323)	(346)
Equity market contracts | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Equity market contracts | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Equity market contracts | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	50	(29)	(38)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	50	(30)	(39)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	50	(29)	(38)
Equity market contracts | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	(3)	1	4
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	(3)	1	4
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	(3)	1	4
Net Embedded Derivatives
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	841	1,020	430	1,258
OCI	(38)	102	(19)	78
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(216)	(231)	(613)	(628)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	(1,166)	865	(1,166)	865
Net Embedded Derivatives | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Net Embedded Derivatives | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Net Embedded Derivatives | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(1,803)	(65)	(1,016)	103
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	(1,812)	(58)	(1,004)	102
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(1,803)	(65)	(1,016)	103
Net Embedded Derivatives | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	60	31	43	55
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	59	32	40	55
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	60	31	43	55
FVO general account securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	88	109	95	29
OCI	0	0	0	0
Purchases	13	0	14	0
Sales	(1)	(6)	(8)	(6)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	69
Transfers out of Level 3	0	0	0	0
Balance, end of period	91	99	91	99
FVO general account securities | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	(9)	(4)	(10)	7
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(9)	0	(10)	11
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(9)	0	(10)	11
FVO general account securities | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
FVO general account securities | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
FVO general account securities | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
FVO contractholder-directed unit-linked investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	364	571	455	603
OCI	0	0	0	0
Purchases	46	169	81	290
Sales	(40)	(288)	(121)	(449)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	80	89	82	60
Transfers out of Level 3	(186)	(31)	(223)	(22)
Balance, end of period	257	488	257	488
FVO contractholder-directed unit-linked investments | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	(7)	(22)	(17)	6
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(7)	(16)	(15)	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(7)	(16)	(15)	0
FVO contractholder-directed unit-linked investments | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
FVO contractholder-directed unit-linked investments | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
FVO contractholder-directed unit-linked investments | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Residential mortgage loans — FVO
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	345	367	308	338
OCI	0	0	0	0
Purchases	18	3	114	49
Sales	(37)	(63)	(100)	(78)
Issuances	0	0	0	0
Settlements	(9)	(13)	(25)	(26)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	315	298	315	298
Residential mortgage loans — FVO | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	(2)	4	18	15
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(2)	4	18	15
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(2)	4	18	15
Residential mortgage loans — FVO | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Residential mortgage loans — FVO | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Residential mortgage loans — FVO | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Trading liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	(4)	0	0	0
OCI	0	0	0	0
Purchases	(2)	0	(2)	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	4	0	0	0
Balance, end of period	(2)	0	(2)	0
Trading liabilities | Net investment income
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Trading liabilities | Net investment gains (losses)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Trading liabilities | Net derivative gains (losses)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Trading liabilities | Policyholder benefits and claims
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
U.S. corporate
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	7,133	7,369	6,942	7,148
OCI	(59)	14	(301)	276
Purchases	694	645	1,250	1,213
Sales	(301)	(198)	(658)	(746)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	552	10	687	261
Transfers out of Level 3	(1,007)	(501)	(932)	(813)
Balance, end of period	7,035	7,340	7,035	7,340
U.S. corporate | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	7	2	14	7
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	7	2	13	4
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	7	2	13	4
U.S. corporate | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	16	(1)	33	(6)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	(7)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	(7)
U.S. corporate | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
U.S. corporate | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Foreign corporate
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	6,387	6,612	6,490	6,704
OCI	(237)	(179)	(458)	277
Purchases	261	449	634	893
Sales	(50)	(145)	(306)	(516)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	147	124	157	281
Transfers out of Level 3	(843)	(630)	(865)	(1,414)
Balance, end of period	5,667	6,233	5,667	6,233
Foreign corporate | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	2	7	11	16
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	3	7	8	15
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	3	7	8	15
Foreign corporate | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	(5)	4	(8)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	(2)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	(2)
Foreign corporate | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Foreign corporate | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Foreign government
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	1,336	1,672	1,311	2,235
OCI	(1)	(32)	1	(104)
Purchases	17	114	30	265
Sales	(17)	(29)	(39)	(160)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	11	167	7	189
Transfers out of Level 3	(659)	(618)	(629)	(1,249)
Balance, end of period	691	1,278	691	1,278
Foreign government | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	4	4	10	106
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	4	4	10	7
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	4	4	10	7
Foreign government | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	(4)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Foreign government | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Foreign government | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
U.S. Treasury and agency
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	55	320	0	62
OCI	0	0	(1)	0
Purchases	0	0	0	0
Sales	(1)	0	(1)	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	18	0	19	0
Transfers out of Level 3	(55)	(320)	0	(62)
Balance, end of period	17	0	17	0
U.S. Treasury and agency | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
U.S. Treasury and agency | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
U.S. Treasury and agency | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
U.S. Treasury and agency | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
RMBS
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	4,136	3,945	4,383	2,957
OCI	(47)	28	(40)	96
Purchases	1,583	708	2,392	1,278
Sales	(262)	(340)	(848)	(443)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	359	0	295	146
Transfers out of Level 3	(318)	(346)	(789)	(70)
Balance, end of period	5,480	4,006	5,480	4,006
RMBS | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	32	11	88	34
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	32	10	88	34
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	32	10	88	34
RMBS | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	(3)	0	(1)	8
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	(1)	(1)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	(1)	(1)
RMBS | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
RMBS | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
CMBS
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	729	595	765	972
OCI	8	9	(3)	(21)
Purchases	165	58	308	133
Sales	(39)	(64)	(168)	(270)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	2	62	21	73
Transfers out of Level 3	(18)	(15)	(76)	(241)
Balance, end of period	847	634	847	634
CMBS | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	2	0	2
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	(1)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	(1)
CMBS | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	(13)	0	(14)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	(13)	0	(13)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	(13)	0	(13)
CMBS | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
CMBS | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
ABS
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	2,153	3,786	2,244	4,210
OCI	(7)	(5)	(25)	56
Purchases	796	1,164	1,362	2,369
Sales	(117)	(177)	(288)	(793)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	74	39	37
Transfers out of Level 3	(619)	(1,564)	(1,127)	(2,567)
Balance, end of period	2,206	3,279	2,206	3,279
ABS | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	1	3	6
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	1	1	2	2
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	1	1	2	2
ABS | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	(2)	(39)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
ABS | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
ABS | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
State and political subdivision
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	55	35	0	10
OCI	1	(1)	0	0
Purchases	20	0	46	0
Sales	0	(7)	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	4
Transfers out of Level 3	(30)	(23)	0	(10)
Balance, end of period	46	4	46	4
State and political subdivision | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
State and political subdivision | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
State and political subdivision | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
State and political subdivision | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Common stock
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	157	186	95	177
OCI	(11)	(37)	(10)	(78)
Purchases	12	3	54	28
Sales	(12)	(10)	(19)	(40)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	1	1	1
Transfers out of Level 3	(28)	(42)	(3)	0
Balance, end of period	126	101	126	101
Common stock | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Common stock | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	8	0	8	13
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	(2)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	(2)
Common stock | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Common stock | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Non-redeemable preferred stock
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	332	263	250	395
OCI	(3)	(5)	(12)	6
Purchases	0	0	3	0
Sales	(1)	(13)	(15)	(58)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	106	0
Transfers out of Level 3	(2)	0	(7)	(100)
Balance, end of period	324	247	324	247
Non-redeemable preferred stock | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Non-redeemable preferred stock | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	(2)	2	(1)	4
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	(3)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	(3)
Non-redeemable preferred stock | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Non-redeemable preferred stock | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Actively Traded Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	13	20	5	12
OCI	0	0	0	0
Purchases	32	3	35	8
Sales	0	(15)	0	(7)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	(5)	0	0	(5)
Balance, end of period	40	8	40	8
Actively Traded Securities | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Actively Traded Securities | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Actively Traded Securities | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Actively Traded Securities | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Short-term Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	1,809	246	336	254
OCI	0	0	0	(1)
Purchases	1,296	114	1,313	126
Sales	(11)	(131)	(28)	(205)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	5	0	0	0
Transfers out of Level 3	(1,786)	(75)	(309)	(20)
Balance, end of period	1,313	155	1,313	155
Short-term Investments | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	1	1	3
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	1	0	1
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	1	0	1
Short-term Investments | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	(2)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Short-term Investments | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Short-term Investments | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Separate account assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	1,925	1,691	1,922	1,465
OCI	0	0	0	0
Purchases	95	117	297	510
Sales	(93)	(129)	(232)	(337)
Issuances	0	1	0	82
Settlements	0	0	(2)	(28)
Transfers into Level 3	2	219	3	147
Transfers out of Level 3	(271)	(38)	(311)	(47)
Balance, end of period	1,682	1,891	1,682	1,891
Separate account assets | Net investment income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Separate account assets | Net investment gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	24	30	5	99
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Separate account assets | Net derivative gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Separate account assets | Policyholder benefits and claims
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	$ 0	$ 0	$ 0	$ 0