Fair Value (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
U.S. corporate securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	$ 6,784	$ 7,149	$ 6,694
Earnings [Abstract]
Net Investment Income	14	11	22
Net Investment Gains (Losses)	4	17	(13)
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	328	327	277
Purchases	1,718	912
Sales	(1,207)	(887)
Issuances	0	0
Settlements	0	0
Purchases, Sales, Issuances and Settlements			(415)
Transfers Into Level 3	661	169	898
Transfers Out of Level 3	(869)	(914)	(314)
Balance, End of Period	7,433	6,784	7,149
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	12	10	13
Net Investment Gains (Losses)	(4)	(27)	(44)
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Foreign corporate securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	4,370	5,726	5,244
Earnings [Abstract]
Net Investment Income	20	27	15
Net Investment Gains (Losses)	(78)	(9)	(34)
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	294	(66)	318
Purchases	2,654	1,740
Sales	(855)	(2,094)
Issuances	0	0
Settlements	0	0
Purchases, Sales, Issuances and Settlements			305
Transfers Into Level 3	186	211	502
Transfers Out of Level 3	(383)	(1,165)	(624)
Balance, End of Period	6,208	4,370	5,726
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	19	19	15
Net Investment Gains (Losses)	(30)	(31)	(43)
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	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	2,322	3,134	378
Earnings [Abstract]
Net Investment Income	14	18	6
Net Investment Gains (Losses)	(3)	0	(5)
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	45	0	(95)
Purchases	431	529
Sales	(673)	(179)
Issuances	0	0
Settlements	0	0
Purchases, Sales, Issuances and Settlements			2,965
Transfers Into Level 3	28	123	40
Transfers Out of Level 3	(350)	(1,303)	(155)
Balance, End of Period	1,814	2,322	3,134
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	16	18	10
Net Investment Gains (Losses)	0	(3)	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
RMBS [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	1,602	2,541	2,884
Earnings [Abstract]
Net Investment Income	27	10	64
Net Investment Gains (Losses)	(7)	(41)	(59)
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	275	(5)	305
Purchases	952	393
Sales	(704)	(213)
Issuances	0	0
Settlements	0	0
Purchases, Sales, Issuances and Settlements			(445)
Transfers Into Level 3	161	20	91
Transfers Out of Level 3	(269)	(1,103)	(299)
Balance, End of Period	2,037	1,602	2,541
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	27	11	63
Net Investment Gains (Losses)	(4)	(41)	(29)
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	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	31	79	37
Earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	0	3	2
Purchases	48	6
Sales	(8)	(1)
Issuances	0	0
Settlements	0	0
Purchases, Sales, Issuances and Settlements			(6)
Transfers Into Level 3	0	0	46
Transfers Out of Level 3	0	(56)	0
Balance, End of Period	71	31	79
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
CMBS [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	753	1,011	139
Earnings [Abstract]
Net Investment Income	8	25	1
Net Investment Gains (Losses)	(42)	(16)	(6)
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	(4)	71	89
Purchases	682	283
Sales	(397)	(178)
Issuances	0	0
Settlements	0	0
Purchases, Sales, Issuances and Settlements			684
Transfers Into Level 3	177	52	132
Transfers Out of Level 3	(30)	(495)	(28)
Balance, End of Period	1,147	753	1,011
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	2	24	1
Net Investment Gains (Losses)	(1)	(14)	(6)
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
ABS [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	1,850	3,026	1,659
Earnings [Abstract]
Net Investment Income	18	24	9
Net Investment Gains (Losses)	2	(18)	(40)
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	(2)	81	168
Purchases	2,007	1,033
Sales	(177)	(659)
Issuances	0	0
Settlements	0	0
Purchases, Sales, Issuances and Settlements			1,435
Transfers Into Level 3	6	14	28
Transfers Out of Level 3	(48)	(1,651)	(233)
Balance, End of Period	3,656	1,850	3,026
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	18	20	9
Net Investment Gains (Losses)	0	(10)	(23)
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	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	53	46	69
Earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	3	(8)	(2)
Purchases	5	11
Sales	(7)	(4)
Issuances	0	0
Settlements	0	0
Purchases, Sales, Issuances and Settlements			9
Transfers Into Level 3	0	10	0
Transfers Out of Level 3	0	(2)	(30)
Balance, End of Period	54	53	46
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other fixed maturity securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	0	4	6
Earnings [Abstract]
Net Investment Income	0	0	1
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	0	0	2
Purchases	0	0
Sales	0	(4)
Issuances	0	0
Settlements	0	0
Purchases, Sales, Issuances and Settlements			(5)
Transfers Into Level 3	0	0	0
Transfers Out of Level 3	0	0	0
Balance, End of Period	0	0	4
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0	1
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Common Stock [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	281	268	136
Earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	(1)	14	5
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	13	5	7
Purchases	99	106
Sales	(140)	(46)
Issuances	0	0
Settlements	0	0
Purchases, Sales, Issuances and Settlements			128
Transfers Into Level 3	3	0	1
Transfers Out of Level 3	(65)	(66)	(9)
Balance, End of Period	190	281	268
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	(11)	(6)	(2)
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	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	438	905	1,102
Earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	2	(71)	46
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	40	5	12
Purchases	5	3
Sales	(66)	(416)
Issuances	0	0
Settlements	0	0
Purchases, Sales, Issuances and Settlements			(250)
Transfers Into Level 3	0	12	0
Transfers Out of Level 3	0	0	(5)
Balance, End of Period	419	438	905
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	(19)	(3)
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Actively traded securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	0	10	32
Earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	0	0	0
Purchases	6	0
Sales	0	(8)
Issuances	0	0
Settlements	0	0
Purchases, Sales, Issuances and Settlements			(22)
Transfers Into Level 3	0	0	0
Transfers Out of Level 3	0	(2)	0
Balance, End of Period	6	0	10
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
FVO general account securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	23	77	51
Earnings [Abstract]
Net Investment Income	18	(7)	8
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	0	0	0
Purchases	0	0
Sales	(9)	(33)
Issuances	0	0
Settlements	0	0
Purchases, Sales, Issuances and Settlements			(1)
Transfers Into Level 3	0	0	37
Transfers Out of Level 3	0	(14)	(18)
Balance, End of Period	32	23	77
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	14	(8)	12
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	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	1,386	735	0
Earnings [Abstract]
Net Investment Income	25	5	(15)
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	0	0	0
Purchases	604	1,246
Sales	(1,040)	(478)
Issuances	0	0
Settlements	0	0
Purchases, Sales, Issuances and Settlements			750
Transfers Into Level 3	0	121	0
Transfers Out of Level 3	(38)	(243)	0
Balance, End of Period	937	1,386	735
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	25	(4)	(15)
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	590	858	23
Earnings [Abstract]
Net Investment Income	2	3	2
Net Investment Gains (Losses)	0	(2)	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	(26)	2	(9)
Purchases	425	600
Sales	(559)	(870)
Issuances	0	0
Settlements	0	0
Purchases, Sales, Issuances and Settlements			842
Transfers Into Level 3	5	0	0
Transfers Out of Level 3	(8)	(1)	0
Balance, End of Period	429	590	858
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	1	0	2
Net Investment Gains (Losses)	0	(1)	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	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	1,414	24	25
Earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	(35)	5	(2)
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	0	0	0
Purchases	1	3
Sales	(1,348)	0
Issuances	7	1,361
Settlements	(43)	(87)
Purchases, Sales, Issuances and Settlements			0
Transfers Into Level 3	56	109	10
Transfers Out of Level 3	(3)	(1)	(9)
Balance, End of Period	49	1,414	24
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	(29)	5	(2)
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
MSR's [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	666	950	878
Earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	(83)	(314)	(79)
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	0	0	0
Purchases	0	0
Sales	(485)	0
Issuances	43	173
Settlements	(141)	(143)
Purchases, Sales, Issuances and Settlements			151
Transfers Into Level 3	0	0	0
Transfers Out of Level 3	0	0	0
Balance, End of Period	0	666	950
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	(282)	(28)
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Separate account assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	1,325	1,983	1,797
Earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	99	39	132
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	0	0	0
Purchases	244	284
Sales	(443)	(743)
Issuances	2	0
Settlements	(1)	0
Purchases, Sales, Issuances and Settlements			242
Transfers Into Level 3	24	19	46
Transfers Out of Level 3	(45)	(257)	(234)
Balance, End of Period	1,205	1,325	1,983
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Interest rate contracts [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	300	(86)	7
Earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	15	41	36
Other Revenues	(67)	62	1
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	0	329	(107)
Purchases	0	(1)
Sales	0	0
Issuances	0	0
Settlements	(71)	(44)
Purchases, Sales, Issuances and Settlements			(23)
Transfers Into Level 3	0	(1)	0
Transfers Out of Level 3	0	0	0
Balance, End of Period	177	300	(86)
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	0	24	36
Other Revenues	0	68	5
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Foreign currency contracts [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	44	73	108
Earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	10	(28)	46
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	(4)
Other Comprehensive Income (Loss)	0	0	2
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	(17)	(1)
Purchases, Sales, Issuances and Settlements			(57)
Transfers Into Level 3	0	0	0
Transfers Out of Level 3	0	0	(22)
Balance, End of Period	37	44	73
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	(12)	(24)	45
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Credit contracts [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	1	44	42
Earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	48	(43)	4
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	0	14	13
Purchases	0	1
Sales	0	0
Issuances	(3)	(3)
Settlements	(3)	(12)
Purchases, Sales, Issuances and Settlements			(15)
Transfers Into Level 3	0	0	0
Transfers Out of Level 3	0	0	0
Balance, End of Period	43	1	44
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	47	(42)	6
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Equity market contracts [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	889	142	199
Earnings [Abstract]
Net Investment Income	0	(3)	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	(606)	601	(88)
Other Revenues	0	0	0
Policyholder Benefits and Claims	29	7	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	(3)	1	11
Purchases	19	228
Sales	0	0
Issuances	(44)	(4)
Settlements	(156)	(8)
Purchases, Sales, Issuances and Settlements			20
Transfers Into Level 3	0	0	0
Transfers Out of Level 3	0	(75)	0
Balance, End of Period	128	889	142
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	(593)	601	(82)
Other Revenues	0	0	0
Policyholder Benefits and Claims	29	7	0
Other Expenses	0	0	0
Net Embedded Derivatives [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	(4,203)	(2,438)	(1,455)
Earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	1,305	(1,277)	(343)
Other Revenues	0	0	0
Policyholder Benefits and Claims	75	86	8
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	259	(119)	(226)
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	(598)	(455)
Purchases, Sales, Issuances and Settlements			(422)
Transfers Into Level 3	0	0	0
Transfers Out of Level 3	0	0	0
Balance, End of Period	(3,162)	(4,203)	(2,438)
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	0	0	0
Net Derivative Gains (Losses)	1,275	(1,303)	(363)
Other Revenues	0	0	0
Policyholder Benefits and Claims	78	94	8
Other Expenses	0	0	0
Long Term Debt Of Consolidated Securitization Entities Estimated Fair Value [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	(116)	(184)	0
Earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	(7)	(8)	48
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss)	0	0	0
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	79	76
Purchases, Sales, Issuances and Settlements			(232)
Transfers Into Level 3	0	0	0
Transfers Out of Level 3	0	0	0
Balance, End of Period	(44)	(116)	(184)
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0	0
Net Investment Gains (Losses)	(7)	(8)	48
Net Derivative Gains (Losses)	0	0	0
Other Revenues	0	0	0
Policyholder Benefits and Claims	0	0	0
Other Expenses	0	0	0
Liability Related To Securitized Reverse Residential Mortgage Loans [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	(1,175)	0
Earnings [Abstract]
Net Investment Income	0	0
Net Investment Gains (Losses)	0	0
Net Derivative Gains (Losses)	0	0
Other Revenues	1	0
Policyholder Benefits and Claims	0	0
Other Expenses	0	0
Other Comprehensive Income (Loss)	0	0
Purchases	0	0
Sales	1,149	0
Issuances	0	(1,175)
Settlements	23	0
Transfers Into Level 3	0	0
Transfers Out of Level 3	2	0
Balance, End of Period	0	(1,175)
Changes in unrealized gains (losses) relating to assets still held at end of period included in earnings [Abstract]
Net Investment Income	0	0
Net Investment Gains (Losses)	0	0
Net Derivative Gains (Losses)	0	0
Other Revenues	0	0
Policyholder Benefits and Claims	0	0
Other Expenses	$ 0	$ 0