Fair Value (Unobservable Input Reconciliation) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Consolidated Securitization Entities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	$ 0	$ 0
Other Comprehensive Income (Loss)	0	0
Purchases	0	0
Sales	(1)	0
Issuances	0	0
Settlements	0	0
Transfers Into Level 3	12	0
Transfers Out of Level 3	0	0
Balance, End of Period	11	0
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	(28)	(44)
Other Comprehensive Income (Loss)	0	0
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	13	14
Transfers Into Level 3	0	0
Transfers out of Level 3	0	0
Balance,End of Period	(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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	(1)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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	13	177
Other Comprehensive Income (Loss)	37	(25)
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	(1)	(13)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, End of Period	56	144
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
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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)	6	5
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	7	5
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	6	5
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
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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	(11)	37
Other Comprehensive Income (Loss)	(2)	0
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	1	1
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, End of Period	(13)	30
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
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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)	0	(7)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	(1)	(8)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	(7)
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
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	0
Credit contracts [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, Beginning of Period	29	43
Other Comprehensive Income (Loss)	0	0
Purchases	0	0
Sales	0	0
Issuances	(3)	0
Settlements	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, End of Period	20	38
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
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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)	(6)	(5)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	(6)	(5)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(6)	(5)
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
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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	(317)	128
Other Comprehensive Income (Loss)	0	(1)
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	(7)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, End of Period	(356)	(139)
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
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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)	(42)	(272)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	(43)	(272)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(42)	(272)
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)	4	13
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	4	13
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	4	13
Net Embedded Derivatives [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, Beginning of Period	1,258	(3,162)
Other Comprehensive Income (Loss)	(5)	104
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	(193)	(169)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, End of Period	980	(1,584)
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
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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)	(94)	1,683
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	(95)	1,690
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(94)	1,683
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)	16	(46)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net Income (Loss)	15	(47)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	16	(46)
FVO general account securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	29	32
Other Comprehensive Income (Loss)	0	0
Purchases	0	0
Sales	0	(7)
Issuances	0	0
Settlements	0	0
Transfers Into Level 3	0	15
Transfers Out of Level 3	0	0
Balance, End of Period	29	44
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)	0	4
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	3
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	3
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
FVO contractholder-directed unit-linked investments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	603	937
Other Comprehensive Income (Loss)	0	0
Purchases	237	578
Sales	(300)	(628)
Issuances	0	0
Settlements	0	0
Transfers Into Level 3	96	30
Transfers Out of Level 3	(26)	(59)
Balance, End of Period	624	831
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)	14	(27)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	14	(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)	14	(1)
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Residential Mortgage Loans - FVO [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	338	0
Other Comprehensive Income (Loss)	0	0
Purchases	28	0
Sales	(5)	0
Issuances	0	0
Settlements	(12)	0
Transfers Into Level 3	0	0
Transfers Out of Level 3	0	0
Balance, End of Period	352	0
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)	3	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	3	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)	3	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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Mortgage Loans Held-for-sale [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	0	49
Other Comprehensive Income (Loss)	0	0
Purchases	0	0
Sales	0	(43)
Issuances	0	0
Settlements	0	(4)
Transfers Into Level 3	0	0
Transfers Out of Level 3	0	0
Balance, End of Period	0	2
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
U.S. corporate securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	7,148	7,433
Other Comprehensive Income (Loss)	160	171
Purchases	651	288
Sales	(206)	(326)
Issuances	0	0
Settlements	0	0
Transfers Into Level 3	459	412
Transfers Out of Level 3	(827)	(1,554)
Balance, End of Period	7,378	6,426
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)	0	6
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	4
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	4
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)	(4)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(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)	(7)	(5)
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Foreign corporate securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	6,704	6,208
Other Comprehensive Income (Loss)	120	1
Purchases	471	313
Sales	(109)	(275)
Issuances	0	0
Settlements	0	0
Transfers Into Level 3	435	26
Transfers Out of Level 3	(1,129)	(432)
Balance, End of Period	6,501	5,825
Foreign corporate securities [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	9	1
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	9	4
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	9	4
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)	0	(17)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	(18)
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	(18)
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Foreign government debt securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	2,235	1,814
Other Comprehensive Income (Loss)	14	(25)
Purchases	74	395
Sales	(52)	(41)
Issuances	0	0
Settlements	0	0
Transfers Into Level 3	231	149
Transfers Out of Level 3	(957)	(99)
Balance, End of Period	1,545	2,203
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)	6	5
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	5	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)	5	6
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)	(6)	5
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
U.S. Treasury and agency securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	62	71
Other Comprehensive Income (Loss)	0	0
Purchases	25	45
Sales	0	(1)
Issuances	0	0
Settlements	0	0
Transfers Into Level 3	0	0
Transfers Out of Level 3	(42)	0
Balance, End of Period	45	115
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
RMBS [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	2,957	2,037
Other Comprehensive Income (Loss)	(12)	112
Purchases	571	432
Sales	(192)	(77)
Issuances	0	0
Settlements	0	0
Transfers Into Level 3	147	9
Transfers Out of Level 3	(50)	(94)
Balance, End of Period	3,439	2,426
RMBS [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	10	8
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	10	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)	10	8
RMBS [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	8	(1)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	(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)
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
CMBS [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	972	1,147
Other Comprehensive Income (Loss)	(25)	(21)
Purchases	103	392
Sales	(155)	(315)
Issuances	0	0
Settlements	0	0
Transfers Into Level 3	24	143
Transfers Out of Level 3	(238)	(262)
Balance, End of Period	682	1,084
CMBS [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	0	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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)
CMBS [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	1	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
ABS [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	4,210	3,656
Other Comprehensive Income (Loss)	75	(23)
Purchases	652	805
Sales	(315)	(275)
Issuances	0	0
Settlements	0	0
Transfers Into Level 3	578	1
Transfers Out of Level 3	(2,362)	(401)
Balance, End of Period	2,800	3,766
ABS [Member] | Net Investment Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	5	3
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	3
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	3
ABS [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	(43)	0
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
State and political subdivision securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	10	54
Other Comprehensive Income (Loss)	0	0
Purchases	0	0
Sales	0	(1)
Issuances	0	0
Settlements	0	0
Transfers Into Level 3	21	0
Transfers Out of Level 3	(10)	0
Balance, End of Period	21	53
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Common Stock [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	177	190
Other Comprehensive Income (Loss)	(8)	(3)
Purchases	3	5
Sales	(26)	(2)
Issuances	0	0
Settlements	0	0
Transfers Into Level 3	38	0
Transfers Out of Level 3	0	0
Balance, End of Period	203	189
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Common Stock [Member] | Net Investment Gains (Losses) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net Income (Loss)	19	(1)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Non-redeemable preferred stock [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	395	419
Other Comprehensive Income (Loss)	6	48
Purchases	0	3
Sales	0	(47)
Issuances	0	0
Settlements	0	0
Transfers Into Level 3	40	0
Transfers Out of Level 3	0	0
Balance, End of Period	441	401
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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)	0	(22)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	0	(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)	0	(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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Actively traded securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	12	6
Other Comprehensive Income (Loss)	0	0
Purchases	11	8
Sales	(5)	0
Issuances	0	0
Settlements	0	0
Transfers Into Level 3	0	0
Transfers Out of Level 3	(7)	0
Balance, End of Period	11	14
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Short-term investments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	254	429
Other Comprehensive Income (Loss)	(1)	21
Purchases	947	2,048
Sales	(59)	(341)
Issuances	0	0
Settlements	0	0
Transfers Into Level 3	0	0
Transfers Out of Level 3	(110)	(5)
Balance, End of Period	1,032	2,130
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	1
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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	(23)
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
Separate account assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	1,465	1,205
Other Comprehensive Income (Loss)	0	0
Purchases	321	92
Sales	(83)	(49)
Issuances	25	3
Settlements	(2)	0
Transfers Into Level 3	18	3
Transfers Out of Level 3	(58)	(51)
Balance, End of Period	1,730	1,219
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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)	44	16
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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
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
Changes in Unrealized Gains (Losses) Included in Net Income (Loss)	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