Fair Value (Unobservable Input Reconciliation) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Consolidated Securitization Entities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	$ 11	$ 0	$ 0	$ 0
Other Comprehensive Income (Loss)	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	(2)	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	1	0	14	0
Transfers out of Level 3	0	0	0	0
Balance, End of Period	12	0	12	0
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	(15)	(31)	(28)	(44)
Other Comprehensive Income (Loss)	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	1	5	14	19
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, End of Period	(15)	(26)	(15)	(26)
Consolidated Securitization Entities [Member] | Net Investment Income [Member]
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 [Member] | Net Investment Gains (Losses) [Member]
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)	(1)	0	(1)	(1)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(1)	0	(1)	(1)
Consolidated Securitization Entities [Member] | Net Derivative Gains (Losses) [Member]
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 [Member] | Policyholder Benefits and Claims [Member]
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 [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, Beginning of Period	36	98	13	177
Other Comprehensive Income (Loss)	20	(11)	69	(83)
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	(2)	0	(2)	0
Settlements	2	(47)	(49)	(27)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	1
Balance, End of Period	47	45	47	45
Interest rate contracts [Member] | Net Investment Income [Member]
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 [Member] | Net Investment Gains (Losses) [Member]
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 [Member] | Net Derivative Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	1	5	1	(14)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	(9)	5	16	(23)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	1	5	1	(14)
Interest rate contracts [Member] | Policyholder Benefits and Claims [Member]
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 [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, Beginning of Period	(3)	6	(11)	37
Other Comprehensive Income (Loss)	2	0	2	0
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	15	1	14	2
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	(1)	0	0
Balance, End of Period	(54)	9	(54)	9
Foreign currency exchange rate contracts [Member] | Net Investment Income [Member]
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 [Member] | Net Investment Gains (Losses) [Member]
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 [Member] | Net Derivative Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(52)	6	(45)	(28)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	(68)	3	(59)	(30)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(52)	6	(45)	(28)
Foreign currency exchange rate contracts [Member] | Policyholder Benefits and Claims [Member]
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 [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, Beginning of Period	17	25	29	43
Other Comprehensive Income (Loss)	0	(1)	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	(1)	0	(4)	0
Settlements	0	4	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, End of Period	8	31	8	31
Credit contracts [Member] | Net Investment Income [Member]
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 [Member] | Net Investment Gains (Losses) [Member]
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 [Member] | Net Derivative Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(8)	3	(15)	(11)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	(8)	3	(17)	(12)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(8)	3	(15)	(11)
Credit contracts [Member] | Policyholder Benefits and Claims [Member]
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 [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, Beginning of Period	(395)	(171)	(317)	128
Other Comprehensive Income (Loss)	2	0	2	(1)
Purchases	0	0	4	4
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	(7)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, End of Period	(346)	(251)	(346)	(251)
Equity market contracts [Member] | Net Investment Income [Member]
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 [Member] | Net Investment Gains (Losses) [Member]
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 [Member] | Net Derivative Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	50	(86)	(38)	(390)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	50	(85)	(39)	(390)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	50	(86)	(38)	(390)
Equity market contracts [Member] | Policyholder Benefits and Claims [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(3)	6	4	15
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	(3)	5	4	15
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(3)	6	4	15
Net Embedded Derivatives [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, Beginning of Period	1,020	(678)	1,258	(3,162)
Other Comprehensive Income (Loss)	102	(16)	78	193
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(231)	(217)	(628)	(583)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, End of Period	865	(53)	865	(53)
Net Embedded Derivatives [Member] | Net Investment Income [Member]
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 [Member] | Net Investment Gains (Losses) [Member]
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 [Member] | Net Derivative Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(65)	882	103	3,589
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	(58)	888	102	3,609
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(65)	882	103	3,589
Net Embedded Derivatives [Member] | Policyholder Benefits and Claims [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	31	(29)	55	(106)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	32	(30)	55	(110)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	31	(29)	55	(106)
FVO general account securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	109	46	29	32
Other Comprehensive Income (Loss)	0	0	0	0
Purchases	0	0	0	0
Sales	(6)	0	(6)	(5)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	69	14
Transfers out of Level 3	0	0	0	0
Balance, End of Period	99	47	99	47
FVO general account securities [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	(4)	1	7	6
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	1	11	6
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	11	6
FVO general account securities [Member] | Net Investment Gains (Losses) [Member]
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 [Member] | Net Derivative Gains (Losses) [Member]
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 [Member] | Policyholder Benefits and Claims [Member]
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 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	571	593	603	937
Other Comprehensive Income (Loss)	0	0	0	0
Purchases	169	308	290	348
Sales	(288)	(232)	(449)	(430)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	89	0	60	57
Transfers out of Level 3	(31)	(20)	(22)	(294)
Balance, End of Period	488	606	488	606
FVO contractholder-directed unit-linked investments [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	(22)	(43)	6	(12)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(16)	(1)	0	(5)
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)	(16)	(1)	0	(5)
FVO contractholder-directed unit-linked investments [Member] | Net Investment Gains (Losses) [Member]
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 [Member] | Net Derivative Gains (Losses) [Member]
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 [Member] | Policyholder Benefits and Claims [Member]
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 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	367	150	338	0
Other Comprehensive Income (Loss)	0	0	0	0
Purchases	3	67	49	214
Sales	(63)	0	(78)	0
Issuances	0	0	0	0
Settlements	(13)	(3)	(26)	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, End of Period	298	212	298	212
Residential Mortgage Loans - FVO [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	4	(2)	15	(2)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	4	(2)	15	(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)	4	(2)	15	(2)
Residential Mortgage Loans - FVO [Member] | Net Investment Gains (Losses) [Member]
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 [Member] | Net Derivative Gains (Losses) [Member]
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 [Member] | Policyholder Benefits and Claims [Member]
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
Mortgage Loans Held-for-sale [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	0	0	0	49
Other Comprehensive Income (Loss)	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	(45)
Issuances	0	0	0	0
Settlements	0	0	0	(4)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, End of Period	0	0	0	0
Mortgage Loans Held-for-sale [Member] | Net Investment Income [Member]
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
Mortgage Loans Held-for-sale [Member] | Net Investment Gains (Losses) [Member]
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
Mortgage Loans Held-for-sale [Member] | Net Derivative Gains (Losses) [Member]
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
Mortgage Loans Held-for-sale [Member] | Policyholder Benefits and Claims [Member]
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 securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	7,369	5,918	7,148	7,433
Other Comprehensive Income (Loss)	14	(32)	276	(38)
Purchases	645	297	1,213	824
Sales	(198)	(249)	(746)	(907)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	10	117	261	324
Transfers out of Level 3	(501)	(172)	(813)	(1,733)
Balance, End of Period	7,340	5,886	7,340	5,886
U.S. corporate securities [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	2	3	7	10
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	2	2	4	9
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	2	4	9
U.S. corporate securities [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	(1)	4	(6)	(27)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	(7)	(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)	0	0	(7)	(34)
U.S. corporate securities [Member] | Net Derivative Gains (Losses) [Member]
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 securities [Member] | Policyholder Benefits and Claims [Member]
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 securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	6,612	6,008	6,704	6,208
Other Comprehensive Income (Loss)	(179)	71	277	(97)
Purchases	449	684	893	1,364
Sales	(145)	(273)	(516)	(714)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	124	173	281	254
Transfers out of Level 3	(630)	(390)	(1,414)	(728)
Balance, End of Period	6,233	6,264	6,233	6,264
Foreign corporate securities [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	7	5	16	11
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	7	5	15	10
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	5	15	10
Foreign corporate securities [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	(5)	(14)	(8)	(34)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	(3)	(2)	(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	(3)	(2)	(3)
Foreign corporate securities [Member] | Net Derivative Gains (Losses) [Member]
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 securities [Member] | Policyholder Benefits and Claims [Member]
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 debt securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	1,672	1,971	2,235	1,814
Other Comprehensive Income (Loss)	(32)	(42)	(104)	(104)
Purchases	114	209	265	551
Sales	(29)	(61)	(160)	(105)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	167	68	189	91
Transfers out of Level 3	(618)	(78)	(1,249)	(195)
Balance, End of Period	1,278	2,063	1,278	2,063
Foreign government debt securities [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	4	(6)	106	3
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	4	(6)	7	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)	4	(6)	7	3
Foreign government debt securities [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	2	(4)	8
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 debt securities [Member] | Net Derivative Gains (Losses) [Member]
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 debt securities [Member] | Policyholder Benefits and Claims [Member]
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 securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	320	82	62	71
Other Comprehensive Income (Loss)	0	0	0	(2)
Purchases	0	0	0	0
Sales	0	(2)	0	(4)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	(320)	(15)	(62)	0
Balance, End of Period	0	65	0	65
U.S. Treasury and agency securities [Member] | Net Investment Income [Member]
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 securities [Member] | Net Investment Gains (Losses) [Member]
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 securities [Member] | Net Derivative Gains (Losses) [Member]
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 securities [Member] | Policyholder Benefits and Claims [Member]
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 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	3,945	2,735	2,957	2,037
Other Comprehensive Income (Loss)	28	(16)	96	108
Purchases	708	563	1,278	1,155
Sales	(340)	(138)	(443)	(242)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	146	12
Transfers out of Level 3	(346)	(136)	(70)	(76)
Balance, End of Period	4,006	3,018	4,006	3,018
RMBS [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	11	9	34	20
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	10	9	34	26
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)	10	9	34	26
RMBS [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	1	8	4
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 [Member] | Net Derivative Gains (Losses) [Member]
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 [Member] | Policyholder Benefits and Claims [Member]
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 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	595	1,050	972	1,147
Other Comprehensive Income (Loss)	9	22	(21)	(28)
Purchases	58	305	133	549
Sales	(64)	(71)	(270)	(339)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	62	0	73	113
Transfers out of Level 3	(15)	(133)	(241)	(266)
Balance, End of Period	634	1,176	634	1,176
CMBS [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	2	4	2	2
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	4	(1)	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	4	(1)	2
CMBS [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	(13)	(1)	(14)	(2)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(13)	0	(13)	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)	(13)	0	(13)	0
CMBS [Member] | Net Derivative Gains (Losses) [Member]
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 [Member] | Policyholder Benefits and Claims [Member]
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 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	3,786	3,758	4,210	3,656
Other Comprehensive Income (Loss)	(5)	(4)	56	(60)
Purchases	1,164	636	2,369	1,510
Sales	(177)	(309)	(793)	(651)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	74	0	37	0
Transfers out of Level 3	(1,564)	(26)	(2,567)	(409)
Balance, End of Period	3,279	4,063	3,279	4,063
ABS [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	1	3	6	12
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	1	3	2	10
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	3	2	10
ABS [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	5	(39)	5
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 [Member] | Net Derivative Gains (Losses) [Member]
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 [Member] | Policyholder Benefits and Claims [Member]
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 securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	35	41	10	54
Other Comprehensive Income (Loss)	(1)	0	0	(1)
Purchases	0	0	0	1
Sales	(7)	(1)	0	(6)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	4	0
Transfers out of Level 3	(23)	(24)	(10)	(32)
Balance, End of Period	4	16	4	16
State and political subdivision securities [Member] | Net Investment Income [Member]
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 securities [Member] | Net Investment Gains (Losses) [Member]
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 securities [Member] | Net Derivative Gains (Losses) [Member]
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 securities [Member] | Policyholder Benefits and Claims [Member]
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 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	186	183	177	190
Other Comprehensive Income (Loss)	(37)	6	(78)	0
Purchases	3	6	28	11
Sales	(10)	(11)	(40)	(15)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	1	1	1	1
Transfers out of Level 3	(42)	(1)	0	(4)
Balance, End of Period	101	185	101	185
Common Stock [Member] | Net Investment Income [Member]
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 [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	1	13	2
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	(2)	(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	(2)	(1)
Common Stock [Member] | Net Derivative Gains (Losses) [Member]
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 [Member] | Policyholder Benefits and Claims [Member]
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 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	263	408	395	419
Other Comprehensive Income (Loss)	(5)	11	6	77
Purchases	0	52	0	55
Sales	(13)	(42)	(58)	(118)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	(20)	(100)	0
Balance, End of Period	247	405	247	405
Non-redeemable preferred stock [Member] | Net Investment Income [Member]
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 [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	2	(4)	4	(28)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	(3)	(17)
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	(3)	(17)
Non-redeemable preferred stock [Member] | Net Derivative Gains (Losses) [Member]
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 [Member] | Policyholder Benefits and Claims [Member]
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 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	20	11	12	6
Other Comprehensive Income (Loss)	0	0	0	0
Purchases	3	6	8	8
Sales	(15)	(1)	(7)	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	(5)	(5)	(3)
Balance, End of Period	8	11	8	11
Actively traded securities [Member] | Net Investment Income [Member]
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 [Member] | Net Investment Gains (Losses) [Member]
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 [Member] | Net Derivative Gains (Losses) [Member]
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 [Member] | Policyholder Benefits and Claims [Member]
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 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	246	344	254	429
Other Comprehensive Income (Loss)	0	7	(1)	15
Purchases	114	106	126	189
Sales	(131)	(266)	(205)	(414)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	(75)	0	(20)	(6)
Balance, End of Period	155	192	155	192
Short-term investments [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	1	3	3	3
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	1	2	1	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	2	1	2
Short-term investments [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	(2)	(2)	(24)
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)
Short-term investments [Member] | Net Derivative Gains (Losses) [Member]
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 [Member] | Policyholder Benefits and Claims [Member]
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 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	1,691	1,225	1,465	1,205
Other Comprehensive Income (Loss)	0	0	0	0
Purchases	117	106	510	249
Sales	(129)	(84)	(337)	(223)
Issuances	1	51	82	71
Settlements	0	(2)	(28)	0
Transfers into Level 3	219	162	147	161
Transfers out of Level 3	(38)	(45)	(47)	(71)
Balance, End of Period	1,891	1,417	1,891	1,417
Separate account assets [Member] | Net Investment Income [Member]
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 [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	30	4	99	25
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 [Member] | Net Derivative Gains (Losses) [Member]
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 [Member] | Policyholder Benefits and Claims [Member]
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