Fair Value of Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
AFS securities:
Derivative investments	$ 3,072		$ 3,072		$ 3,151
Fixed maturity AFS securities:
Corporate bonds	66,476		66,476		59,261
U.S. Government bonds	508		508		494
Foreign government bonds	661		661		733
RMBS	6,737		6,737		8,039
CMBS	1,126		1,126		1,600
CDOs	147		147		102
State and municipal bonds	4,338		4,338		4,047
Hybrid and redeemable preferred securities	1,186		1,186		1,157
VIEs' fixed maturity AFS securities	706		706		700
Equity AFS securities	156		156		139
Trading securities	2,650		2,650		2,675
Derivative investments	3,072		3,072		3,151
Cash and invested cash	4,373		4,373		4,510
Separate account assets	93,326		93,326		83,477
Total assets	185,462		185,462		170,085
Future contract benefits:
Indexed annuity contracts embedded derivatives	(733)		(733)		(399)
GLB reserves embedded derivatives	(1,411)		(1,411)		(2,217)
Long-term debt	(1,203)		(1,203)		(1,688)
Reinsurance related embedded derivatives	(215)		(215)		(168)
Variable interest entities' liabilities - derivatives instruments	(174)		(174)		(291)
Other liabilities:
Deferred compensation plans	(378)		(378)		(354)
Credit default swaps	(16)		(16)		(16)
Total liabilities	(4,130)		(4,130)		(5,133)
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	2,002	2,427	1,697	2,620
Items Included in Net Income	270	(1,360)	212	(1,372)
Gains (Losses) in OCI and other	96	288	181	390
Issuances, Sales, Maturities, Settlements, Calls, Net	(58)	26	422	(191)
Transfers In or Out of Level 3, Net	(317)	(41)	(519)	(107)
Ending Fair Value	1,993	1,340	1,993	1,340
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances	301	136	870	404
Sales	(44)	(29)	(67)	(293)
Maturities	(82)	(93)	(194)	(250)
Settlements	(232)	13	(183)	38
Calls	(1)	(1)	(4)	(90)
Issuances, Sales, Maturities, Settlements, Calls, Net	(58)	26	422	(191)
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held
Changes In Unrealized Gains (Losses) Within Level 3 Financial Instruments Carried At Fair Value And Still Held	315	(1,413)	408	(1,302)
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In to Level 3	275	21	251	54
Transfers Out of Level 3	(592)	(62)	(770)	(161)
Transfers In or Out of Level 3, Net	(317)	(41)	(519)	(107)
Indexed Annuity Contracts [Member] | Discounted Cash Flow Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Liabilities Fair Value Disclosure [Abstract]
Liabilities Fair Value Disclosure	(733)		(733)
Indexed Annuity Contracts [Member] | Maximum [Member] | Discounted Cash Flow Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Liabilities Fair Value Disclosure [Abstract]
Lapse Rate	15.00%		15.00%
Indexed Annuity Contracts [Member] | Minimum [Member] | Discounted Cash Flow Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Liabilities Fair Value Disclosure [Abstract]
Lapse Rate	1.00%		1.00%
Guaranteed Living Benefits Embedded Derivative Reserves [Member] | Monte Carlo Simulation Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Liabilities Fair Value Disclosure [Abstract]
Liabilities Fair Value Disclosure	(1,411)		(1,411)
Guaranteed Living Benefits Embedded Derivative Reserves [Member] | Maximum [Member] | Monte Carlo Simulation Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Liabilities Fair Value Disclosure [Abstract]
Lapse Rate	27.00%		27.00%
NPR	0.47%		0.47%
Fair Value Assumptions Expected Volatility Rate	35.00%		35.00%
Utilization of guaranteed withdrawal	100.00%		100.00%
Guaranteed Living Benefits Embedded Derivative Reserves [Member] | Minimum [Member] | Monte Carlo Simulation Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Liabilities Fair Value Disclosure [Abstract]
Lapse Rate	1.00%		1.00%
NPR	0.04%		0.04%
Fair Value Assumptions Expected Volatility Rate	1.00%		1.00%
Utilization of guaranteed withdrawal	90.00%		90.00%
Corporate bonds [Member] | Discounted Cash Flow Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Fair Value Disclosure [Abstract]
Assets Fair Value Disclosure	1,065		1,065
Corporate bonds [Member] | Maximum [Member] | Discounted Cash Flow Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Fair Value Disclosure [Abstract]
Liquidity Duration Adjustment			13.20%
Corporate bonds [Member] | Minimum [Member] | Discounted Cash Flow Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Fair Value Disclosure [Abstract]
Liquidity Duration Adjustment			1.80%
Foreign government bonds [Member] | Discounted Cash Flow Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Fair Value Disclosure [Abstract]
Assets Fair Value Disclosure	77		77
Foreign government bonds [Member] | Maximum [Member] | Discounted Cash Flow Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Fair Value Disclosure [Abstract]
Liquidity Duration Adjustment			6.10%
Foreign government bonds [Member] | Minimum [Member] | Discounted Cash Flow Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Fair Value Disclosure [Abstract]
Liquidity Duration Adjustment			1.80%
Hybrid and redeemable preferred securities [Member] | Discounted Cash Flow Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Fair Value Disclosure [Abstract]
Assets Fair Value Disclosure	21		21
Hybrid and redeemable preferred securities [Member] | Maximum [Member] | Discounted Cash Flow Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Fair Value Disclosure [Abstract]
Liquidity Duration Adjustment			2.80%
Hybrid and redeemable preferred securities [Member] | Minimum [Member] | Discounted Cash Flow Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Fair Value Disclosure [Abstract]
Liquidity Duration Adjustment			2.70%
Equity securities [Member] | Discounted Cash Flow Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Fair Value Disclosure [Abstract]
Assets Fair Value Disclosure	12		12
Equity securities [Member] | Maximum [Member] | Discounted Cash Flow Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Fair Value Disclosure [Abstract]
Liquidity Duration Adjustment			4.50%
Equity securities [Member] | Minimum [Member] | Discounted Cash Flow Valuation Technique [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Fair Value Disclosure [Abstract]
Liquidity Duration Adjustment			4.30%
Corporate bonds [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	1,678	1,573	1,888	1,816
Items Included in Net Income	1	(18)	(16)	5
Gains (Losses) in OCI and other	24	(33)	14	10
Issuances, Sales, Maturities, Settlements, Calls, Net	225	(11)	327	(247)
Transfers In or Out of Level 3, Net	(73)	(11)	(358)	(84)
Ending Fair Value	1,855	1,500	1,855	1,500
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances	247	22	404	45
Sales	0	(14)	(27)	(146)
Maturities	(7)	(10)	(5)	(11)
Settlements	(14)	(9)	(41)	(46)
Calls	(1)	0	(4)	(89)
Issuances, Sales, Maturities, Settlements, Calls, Net	225	(11)	327	(247)
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In to Level 3	241	4	163	33
Transfers Out of Level 3	(314)	(15)	(521)	(117)
Transfers In or Out of Level 3, Net	(73)	(11)	(358)	(84)
U.S. government bonds [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	1	2	1	2
Items Included in Net Income	0	0	0	0
Gains (Losses) in OCI and other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	(1)	0	(1)
Transfers In or Out of Level 3, Net	0	0	0	0
Ending Fair Value	1	1	1	1
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances		0		0
Sales		0		0
Maturities		0		0
Settlements		(1)		(1)
Calls		0		0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	(1)	0	(1)
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In or Out of Level 3, Net	0	0	0	0
Foreign government bonds [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	102	96	97	113
Items Included in Net Income	0	1	0	0
Gains (Losses) in OCI and other	0	9	0	12
Issuances, Sales, Maturities, Settlements, Calls, Net	(2)	(1)	(4)	(3)
Transfers In or Out of Level 3, Net	(24)	0	(17)	(17)
Ending Fair Value	76	105	76	105
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances	0	0	0	0
Sales	0	0	0	(2)
Maturities	0	0	0	0
Settlements	(2)	0	(4)	0
Calls	0	(1)	0	(1)
Issuances, Sales, Maturities, Settlements, Calls, Net	(2)	(1)	(4)	(3)
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In to Level 3	27	0	29	0
Transfers Out of Level 3	(51)	0	(46)	(17)
Transfers In or Out of Level 3, Net	(24)	0	(17)	(17)
RMBS [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	184	161	158	119
Items Included in Net Income	0	(1)	(3)	(3)
Gains (Losses) in OCI and other	0	2	3	7
Issuances, Sales, Maturities, Settlements, Calls, Net	0	24	(8)	16
Transfers In or Out of Level 3, Net	(181)	(47)	(147)	0
Ending Fair Value	3	139	3	139
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances		28	0	28
Sales		(1)	0	(1)
Maturities		0	(7)	0
Settlements		(3)	(1)	(11)
Calls		0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	24	(8)	16
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In to Level 3	0	0	0	0
Transfers Out of Level 3	(181)	(47)	(147)	0
Transfers In or Out of Level 3, Net	(181)	(47)	(147)	0
CMBS [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	39	53	34	109
Items Included in Net Income	(2)	(7)	(9)	(53)
Gains (Losses) in OCI and other	4	3	15	57
Issuances, Sales, Maturities, Settlements, Calls, Net	(2)	(12)	(10)	(75)
Transfers In or Out of Level 3, Net	4	0	13	(1)
Ending Fair Value	43	37	43	37
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances	0	0	0	0
Sales	0	0	0	(53)
Maturities	0	0	0	0
Settlements	(2)	(12)	(10)	(22)
Calls	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(2)	(12)	(10)	(75)
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In to Level 3	4	0	13	0
Transfers Out of Level 3	0	0	0	(1)
Transfers In or Out of Level 3, Net	4	0	13	(1)
CDOs [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	120	126	102	172
Items Included in Net Income	(2)	5	(2)	19
Gains (Losses) in OCI and other	2	(8)	7	(17)
Issuances, Sales, Maturities, Settlements, Calls, Net	27	(12)	34	(63)
Transfers In or Out of Level 3, Net	0	0	6	0
Ending Fair Value	147	111	147	111
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances	30	0	47	0
Sales	0	0	0	(34)
Maturities	0	0	0	0
Settlements	(3)	(12)	(13)	(29)
Calls	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	27	(12)	34	(63)
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In to Level 3			6	0
Transfers Out of Level 3			0	0
Transfers In or Out of Level 3, Net	0	0	6	0
State and municipal bonds [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	32		0
Items Included in Net Income	0		0
Gains (Losses) in OCI and other	1		1
Issuances, Sales, Maturities, Settlements, Calls, Net	0		32
Transfers In or Out of Level 3, Net	0		0
Ending Fair Value	33		33
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances			32
Sales			0
Maturities			0
Settlements			0
Calls			0
Issuances, Sales, Maturities, Settlements, Calls, Net	0		32
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In or Out of Level 3, Net	0		0
Hybrid and redeemable preferred securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	129	106	100	119
Items Included in Net Income	0	0	(1)	0
Gains (Losses) in OCI and other	13	(12)	19	(5)
Issuances, Sales, Maturities, Settlements, Calls, Net	0	(18)	0	(18)
Transfers In or Out of Level 3, Net	(29)	16	(5)	(4)
Ending Fair Value	113	92	113	92
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances		0		0
Sales		(18)		(18)
Maturities		0		0
Settlements		0		0
Calls		0		0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	(18)	0	(18)
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In to Level 3	0	16	35	18
Transfers Out of Level 3	(29)	0	(40)	(22)
Transfers In or Out of Level 3, Net	(29)	16	(5)	(4)
Trading securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	72	71	68	76
Items Included in Net Income	0	1	2	0
Gains (Losses) in OCI and other	4	1	3	4
Issuances, Sales, Maturities, Settlements, Calls, Net	(2)	(5)	(2)	(8)
Transfers In or Out of Level 3, Net	(14)	1	(11)	(3)
Ending Fair Value	60	69	60	69
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances	0	0	0	0
Sales	(1)	(2)	0	(3)
Maturities	0	0	0	0
Settlements	(1)	(3)	(2)	(5)
Calls	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(2)	(5)	(2)	(8)
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In to Level 3	3	1	5	1
Transfers Out of Level 3	(17)	0	(16)	(4)
Transfers In or Out of Level 3, Net	(14)	1	(11)	(3)
Derivative Financial Instruments, Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	2,517	1,492	2,470	1,495
Items Included in Net Income	(268)	684	(557)	600
Gains (Losses) in OCI and other	47	340	114	335
Issuances, Sales, Maturities, Settlements, Calls, Net	(63)	10	206	96
Transfers In or Out of Level 3, Net	0	0	0	0
Ending Fair Value	2,233	2,526	2,233	2,526
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances	55	87	428	362
Sales	(43)	6	(40)	(27)
Maturities	(75)	(83)	(182)	(239)
Settlements	0	0	0	0
Calls	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(63)	10	206	96
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held
Changes In Unrealized Gains (Losses) Within Level 3 Financial Instruments Carried At Fair Value And Still Held	(279)	696	(618)	574
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In or Out of Level 3, Net	0	0	0	0
Indexed Annuity Contracts Embedded Derivatives [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	(431)	(506)	(399)	(497)
Items Included in Net Income	(63)	135	(143)	80
Gains (Losses) in OCI and other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(239)	29	(191)	75
Transfers In or Out of Level 3, Net	0	0	0	0
Ending Fair Value	(733)	(342)	(733)	(342)
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances	(31)	(11)	(66)	(49)
Sales	0	0	0	0
Maturities	0	0	0	0
Settlements	(208)	40	(125)	124
Calls	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(239)	29	(191)	75
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held
Changes In Unrealized Gains (Losses) Within Level 3 Financial Instruments Carried At Fair Value And Still Held	4	(4)	22	0
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In or Out of Level 3, Net	0	0	0	0
Guaranteed Living Benefits Embedded Derivative Reserves [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	(1,926)	(278)	(2,217)	(408)
Items Included in Net Income	570	(2,065)	861	(1,935)
Gains (Losses) in OCI and other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	0	0	0
Transfers In or Out of Level 3, Net	0	0	0	0
Ending Fair Value	(1,356)	(2,343)	(1,356)	(2,343)
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances, Sales, Maturities, Settlements, Calls, Net	0	0	0	0
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held
Changes In Unrealized Gains (Losses) Within Level 3 Financial Instruments Carried At Fair Value And Still Held	556	(2,011)	924	(1,781)
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In or Out of Level 3, Net	0	0	0	0
Variable Interest Entities Liabilities - Derivative Instruments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	(231)	(198)	(291)	(209)
Items Included in Net Income	57	(109)	117	(98)
Gains (Losses) in OCI and other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	0	0	0
Transfers In or Out of Level 3, Net	0	0	0	0
Ending Fair Value	(174)	(307)	(174)	(307)
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances, Sales, Maturities, Settlements, Calls, Net	0	0	0	0
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held
Changes In Unrealized Gains (Losses) Within Level 3 Financial Instruments Carried At Fair Value And Still Held	57	(108)	117	(98)
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In or Out of Level 3, Net	0	0	0	0
Deferred Compensation Plans Embedded Derivatives [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	(358)	(360)	(354)	(363)
Items Included in Net Income	(18)	22	(37)	10
Gains (Losses) in OCI and other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(2)	13	13	28
Transfers In or Out of Level 3, Net	0	0	0	0
Ending Fair Value	(378)	(325)	(378)	(325)
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances	0	0	0	0
Sales	0	0	0	0
Maturities	0	0	0	0
Settlements	(2)	13	13	28
Calls	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(2)	13	13	28
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held
Changes In Unrealized Gains (Losses) Within Level 3 Financial Instruments Carried At Fair Value And Still Held	(18)	22	(37)	10
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In or Out of Level 3, Net	0	0	0	0
Credit default swaps [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	(11)	(7)	(16)	(16)
Items Included in Net Income	(5)	(8)	0	(5)
Gains (Losses) in OCI and other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	0	0	6
Transfers In or Out of Level 3, Net	0	0	0	0
Ending Fair Value	(16)	(15)	(16)	(15)
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances				0
Sales				6
Maturities				0
Settlements				0
Calls				0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	0	0	6
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held
Changes In Unrealized Gains (Losses) Within Level 3 Financial Instruments Carried At Fair Value And Still Held	(5)	(8)	0	(7)
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In or Out of Level 3, Net	0	0	0	0
Equity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	85	96	56	92
Items Included in Net Income	0	0	0	8
Gains (Losses) in OCI and other	1	(14)	5	(13)
Issuances, Sales, Maturities, Settlements, Calls, Net	0	10	25	3
Transfers In or Out of Level 3, Net	0	0	0	2
Ending Fair Value	86	92	86	92
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances		10	25	18
Sales		0	0	(15)
Maturities		0	0	0
Settlements		0	0	0
Calls		0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	10	25	3
Fair Value Assets And Liabilities Measured On Recurring Basis Transfers Into And Out Of Level 3 [Abstract]
Transfers In to Level 3			0	2
Transfers Out of Level 3			0	0
Transfers In or Out of Level 3, Net	0	0	0	2
Quoted Price in Active Markets for Identical Assets (Level 1) [Member]
Fixed maturity AFS securities:
Corporate bonds	65		65		63
U.S. Government bonds	476		476		475
Foreign government bonds	0		0		0
RMBS	0		0		0
CMBS	0		0		0
CDOs	0		0		0
State and municipal bonds	0		0		0
Hybrid and redeemable preferred securities	20		20		15
VIEs' fixed maturity AFS securities	111		111		108
Equity AFS securities	44		44		37
Trading securities	2		2		2
Derivative investments	0		0		0
Cash and invested cash	0		0		0
Separate account assets	0		0		0
Total assets	718		718		700
Future contract benefits:
Indexed annuity contracts embedded derivatives	0		0		0
GLB reserves embedded derivatives	0		0		0
Long-term debt	0		0		0
Reinsurance related embedded derivatives	0		0		0
Variable interest entities' liabilities - derivatives instruments	0		0		0
Other liabilities:
Deferred compensation plans	0		0		0
Credit default swaps	0		0		0
Total liabilities	0		0		0
Significant Observable Inputs (Level 2) [Member]
Fixed maturity AFS securities:
Corporate bonds	64,556		64,556		57,310
U.S. Government bonds	31		31		18
Foreign government bonds	585		585		636
RMBS	6,734		6,734		7,881
CMBS	1,083		1,083		1,566
CDOs	0		0		0
State and municipal bonds	4,305		4,305		4,047
Hybrid and redeemable preferred securities	1,053		1,053		1,042
VIEs' fixed maturity AFS securities	595		595		592
Equity AFS securities	26		26		46
Trading securities	2,588		2,588		2,605
Derivative investments	839		839		681
Cash and invested cash	4,373		4,373		4,510
Separate account assets	93,326		93,326		83,477
Total assets	180,094		180,094		164,411
Future contract benefits:
Indexed annuity contracts embedded derivatives	0		0		0
GLB reserves embedded derivatives	0		0		0
Long-term debt	(1,203)		(1,203)		(1,688)
Reinsurance related embedded derivatives	(215)		(215)		(168)
Variable interest entities' liabilities - derivatives instruments	0		0		0
Other liabilities:
Deferred compensation plans	0		0		0
Credit default swaps	0		0		0
Total liabilities	(1,418)		(1,418)		(1,856)
Significant Unobservable Inputs (Level 3) [Member]
Fixed maturity AFS securities:
Corporate bonds	1,855		1,855		1,888
U.S. Government bonds	1		1		1
Foreign government bonds	76		76		97
RMBS	3		3		158
CMBS	43		43		34
CDOs	147		147		102
State and municipal bonds	33		33		0
Hybrid and redeemable preferred securities	113		113		100
VIEs' fixed maturity AFS securities	0		0		0
Equity AFS securities	86		86		56
Trading securities	60		60		68
Derivative investments	2,233		2,233		2,470
Cash and invested cash	0		0		0
Separate account assets	0		0		0
Total assets	4,650		4,650		4,974
Future contract benefits:
Indexed annuity contracts embedded derivatives	(733)		(733)		(399)
GLB reserves embedded derivatives	(1,411)		(1,411)		(2,217)
Long-term debt	0		0		0
Reinsurance related embedded derivatives	0		0		0
Variable interest entities' liabilities - derivatives instruments	(174)		(174)		(291)
Other liabilities:
Deferred compensation plans	(378)		(378)		(354)
Credit default swaps	(16)		(16)		(16)
Total liabilities	(2,712)		(2,712)		(3,277)
Carrying Value [Member]
AFS securities:
Fixed maturity securities	81,179		81,179		75,433
VIEs' fixed maturity securities	706		706		700
Equity securities	156		156		139
Trading Securities, Fair Value Disclosure	2,650		2,650		2,675
Mortgage loans on real estate	6,690		6,690		6,942
Derivative investments	3,072		3,072		3,151
Other investments	1,123		1,123		1,069
Cash and invested cash, fair value	4,373		4,373		4,510
Separate account assets	93,326		93,326		83,477
Future contract benefits:
Indexed annuity contracts embedded derivatives	(733)		(733)		(399)
GLB reserves embedded derivatives	(1,411)		(1,411)		(2,217)
Other contract holder funds:
Remaining guaranteed interest and similar contracts	(914)		(914)		(1,114)
Account value of certain investment contracts	(28,161)		(28,161)		(27,468)
Short-term debt	(200)		(200)		(300)
Long-term debt	(5,494)		(5,494)		(5,391)
Reinsurance related embedded derivatives	(215)		(215)		(168)
Variable interest entities' liabilities - derivative instruments	(174)		(174)		(291)
Other liabilities:
Deferred compensation plans	(378)		(378)		(354)
Credit default swaps	(16)		(16)		(16)
Fair Value [Member]
AFS securities:
Fixed maturity securities	81,179		81,179		75,433
VIEs' fixed maturity securities	706		706		700
Equity securities	156		156		139
Trading Securities, Fair Value Disclosure	2,650		2,650		2,675
Mortgage loans on real estate	7,338		7,338		7,608
Derivative investments	3,072		3,072		3,151
Other investments	1,123		1,123		1,069
Cash and invested cash, fair value	4,373		4,373		4,510
Separate account assets	93,326		93,326		83,477
Future contract benefits:
Indexed annuity contracts embedded derivatives	(733)		(733)		(399)
GLB reserves embedded derivatives	(1,411)		(1,411)		(2,217)
Other contract holder funds:
Remaining guaranteed interest and similar contracts	(914)		(914)		(1,114)
Account value of certain investment contracts	(32,344)		(32,344)		(30,812)
Short-term debt	(201)		(201)		(309)
Long-term debt	(6,266)		(6,266)		(5,345)
Reinsurance related embedded derivatives	(215)		(215)		(168)
Variable interest entities' liabilities - derivative instruments	(174)		(174)		(291)
Other liabilities:
Deferred compensation plans	(378)		(378)		(354)
Credit default swaps	$ (16)		$ (16)		$ (16)