Fair Value (Unobservable Input Reconciliation) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 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	(1)	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	12	0
Transfers out of Level 3	0	0	0	0
Balance, End of Period	11	0	11	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	0	0	13	14
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, End of Period	(15)	(31)	(15)	(31)
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	(1)	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	(1)	0
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	(1)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0	0	(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	56	144	13	177
Other Comprehensive Income (Loss)	11	(7)	49	(31)
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(40)	(12)	(41)	(25)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	(1)	0	(1)
Balance, End of Period	36	98	36	98
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)	(21)	0	(17)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	9	(26)	15	(22)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(1)	(21)	0	(17)
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	(13)	30	(11)	37
Other Comprehensive Income (Loss)	1	2	0	1
Purchases	0	2	0	2
Sales	0	0	0	0
Issuances	0	(1)	0	(1)
Settlements	3	(2)	0	1
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, End of Period	(3)	6	(3)	6
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)	4	(26)	7	(34)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	6	(25)	8	(34)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	4	(26)	7	(34)
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	20	38	29	43
Other Comprehensive Income (Loss)	0	(3)	0	(3)
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	(1)	0	(3)	0
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	17	25	17	25
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)	(1)	(10)	(7)	(15)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	(2)	(10)	(9)	(15)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(1)	(10)	(7)	(15)
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	(356)	(139)	(317)	128
Other Comprehensive Income (Loss)	0	0	(1)	0
Purchases	4	4	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	(395)	(171)	(395)	(171)
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)	(46)	(34)	(87)	(305)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	(45)	(33)	(87)	(305)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(46)	(34)	(87)	(305)
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)	2	(3)	6	10
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	2	(3)	6	9
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	2	(3)	6	10
Net Embedded Derivatives [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, Beginning of Period	980	(1,584)	1,258	(3,162)
Other Comprehensive Income (Loss)	(18)	105	(24)	209
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(205)	(197)	(397)	(366)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, End of Period	1,020	(678)	1,020	(678)
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)	262	1,024	168	2,707
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	255	1,031	160	2,721
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	262	1,024	168	2,707
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)	8	(31)	24	(77)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	8	(33)	23	(80)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	8	(31)	24	(77)
FVO general account securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	29	44	29	32
Other Comprehensive Income (Loss)	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	(5)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	69	0	69	14
Transfers out of Level 3	0	0	0	0
Balance, End of Period	109	46	109	46
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)	11	2	11	5
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	11	3	11	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)	11	3	11	5
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	624	831	603	937
Other Comprehensive Income (Loss)	0	0	0	0
Purchases	281	341	318	340
Sales	(270)	(481)	(368)	(427)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	37	36	27	58
Transfers out of Level 3	(107)	(117)	(21)	(291)
Balance, End of Period	571	593	571	593
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)	6	(17)	12	(24)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	15	(9)	14	(12)
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)	15	(9)	14	(12)
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	352	0	338	0
Other Comprehensive Income (Loss)	0	0	0	0
Purchases	24	150	51	150
Sales	(3)	0	(8)	0
Issuances	0	0	0	0
Settlements	(14)	0	(25)	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, End of Period	367	150	367	150
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)	8	0	11	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	8	0	11	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)	8	0	11	0
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	2	0	49
Other Comprehensive Income (Loss)	0	0	0	0
Purchases	0	0	0	0
Sales	0	(2)	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	7,378	6,426	7,148	7,433
Other Comprehensive Income (Loss)	108	(169)	268	(9)
Purchases	487	553	863	684
Sales	(455)	(281)	(562)	(659)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	253	121	464	241
Transfers out of Level 3	(413)	(707)	(816)	(1,748)
Balance, End of Period	7,369	5,918	7,369	5,918
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)	4	4	4	8
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	2	3	2	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)	2	3	2	7
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)	7	(29)	0	(32)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	(28)	(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	(28)	(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	6,501	5,825	6,704	6,208
Other Comprehensive Income (Loss)	339	(168)	298	(161)
Purchases	394	642	716	794
Sales	(323)	(135)	(240)	(413)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	223	201	517	185
Transfers out of Level 3	(518)	(358)	(1,386)	(588)
Balance, End of Period	6,612	6,008	6,612	6,008
Foreign corporate securities [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	(1)	4	4	6
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(2)	4	7	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)	(2)	4	7	5
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)	(3)	(3)	(1)	(23)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(2)	0	(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)	(2)	0	(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	1,545	2,203	2,235	1,814
Other Comprehensive Income (Loss)	(91)	(48)	(77)	(47)
Purchases	118	234	179	352
Sales	(96)	(47)	(109)	(74)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	284	3	312	91
Transfers out of Level 3	(184)	(376)	(962)	(178)
Balance, End of Period	1,672	1,971	1,672	1,971
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)	96	2	98	8
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	1	2	3	8
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	3	8
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	0	(4)	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
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	45	115	62	71
Other Comprehensive Income (Loss)	0	(2)	0	(2)
Purchases	301	0	301	0
Sales	(26)	(42)	(1)	(4)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	16	0	17
Transfers out of Level 3	0	(5)	(42)	0
Balance, End of Period	320	82	320	82
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	3,439	2,426	2,957	2,037
Other Comprehensive Income (Loss)	81	14	68	124
Purchases	802	524	1,176	803
Sales	(209)	(198)	(377)	(168)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	49	146	21
Transfers out of Level 3	(193)	(86)	(68)	(94)
Balance, End of Period	3,945	2,735	3,945	2,735
RMBS [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	25	2	35	10
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	13	9	24	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)	13	9	24	17
RMBS [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	4	8	2
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	(1)	(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	(1)	(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	682	1,084	972	1,147
Other Comprehensive Income (Loss)	(8)	(6)	(32)	(49)
Purchases	15	184	61	404
Sales	(34)	(113)	(172)	(333)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	46	11	139
Transfers out of Level 3	(60)	(143)	(245)	(255)
Balance, End of Period	595	1,050	595	1,050
CMBS [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0	0	(1)
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 [Member] | Net Investment Gains (Losses) [Member]
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	(2)	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	(2)	0	(2)
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	2,800	3,766	4,210	3,656
Other Comprehensive Income (Loss)	(3)	(37)	63	(62)
Purchases	1,616	359	2,098	985
Sales	(259)	(256)	(567)	(420)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	121	0	548	0
Transfers out of Level 3	(492)	(79)	(2,533)	(409)
Balance, End of Period	3,786	3,758	3,786	3,758
ABS [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	1	5	5	8
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	5	0	8
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	5	0	8
ABS [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	2	0	(38)	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] | 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	21	53	10	54
Other Comprehensive Income (Loss)	0	(1)	1	(1)
Purchases	2	17	2	17
Sales	0	(5)	0	(5)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	12	0	32	0
Transfers out of Level 3	0	(23)	(10)	(24)
Balance, End of Period	35	41	35	41
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	203	189	177	190
Other Comprehensive Income (Loss)	40	(4)	43	(7)
Purchases	24	8	21	12
Sales	(2)	(7)	(14)	(9)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	2	1	40	1
Transfers out of Level 3	(79)	(4)	(79)	(4)
Balance, End of Period	186	183	186	183
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)	(2)	0	(2)	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(2)	0	(2)	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)	(2)	0	(2)	0
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	441	401	395	419
Other Comprehensive Income (Loss)	15	8	14	65
Purchases	0	20	0	23
Sales	0	(22)	0	(70)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	(190)	0	(143)	0
Balance, End of Period	263	408	263	408
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)	(3)	1	(3)	(29)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(3)	0	(3)	(20)
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)	0	(3)	(20)
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	11	14	12	6
Other Comprehensive Income (Loss)	0	0	0	0
Purchases	19	1	20	3
Sales	(2)	(4)	(5)	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	2	0	2
Transfers out of Level 3	(8)	(2)	(7)	0
Balance, End of Period	20	11	20	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	1,032	2,130	254	429
Other Comprehensive Income (Loss)	0	(38)	(1)	11
Purchases	212	247	192	332
Sales	(461)	(1,783)	(76)	(400)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	(538)	(218)	(124)	(6)
Balance, End of Period	246	344	246	344
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	2	1	2
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	1	1	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)	1	1	1	1
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	4	0	(24)
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 [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	1,730	1,219	1,465	1,205
Other Comprehensive Income (Loss)	0	0	0	0
Purchases	131	117	348	175
Sales	(104)	(39)	(192)	(78)
Issuances	58	0	82	0
Settlements	(27)	(19)	(28)	(28)
Transfers into Level 3	4	5	2	7
Transfers out of Level 3	(122)	(43)	(51)	(56)
Balance, End of Period	1,691	1,225	1,691	1,225
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)	21	(15)	65	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 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