Derivative Instruments (Outstanding Derivative Instruments With Off-Balance-Sheet Risks) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	$ 71,594		$ 61,110
Asset Fair Value	3,102		3,547
Liability Fair Value	2,322		2,762
Interest Rate Contract [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	50,834	[1]
Foreign Currency Contract [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	717	[2]
Equity Market Contract [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	19,917
Credit Risk Contract [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	126
Derivative investments [Member] | Interest Rate Contract [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	45,620	[3]	36,539	[3]
Asset Fair Value	215	[3]	1,042	[3]
Liability Fair Value	744	[3]	475	[3]
Derivative investments [Member] | Foreign Currency Contract [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	102	[3]	48	[3]
Derivative investments [Member] | Equity Market Contract [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	19,917	[3]	19,857	[3]
Asset Fair Value	957	[3]	1,734	[3]
Liability Fair Value	193	[3]	170	[3]
Derivative investments [Member] | Equity Collar [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts			9	[3]
Asset Fair Value			1	[3]
Derivative investments [Member] | Cash flow hedges | Designated as Hedging Instrument [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	4,954		3,634
Asset Fair Value	594		501
Liability Fair Value	194		250
Derivative investments [Member] | Cash flow hedges | Interest Rate Contract [Member] | Designated as Hedging Instrument [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	4,339	[3]	3,214	[3]
Asset Fair Value	562	[3]	462	[3]
Liability Fair Value	148	[3]	224	[3]
Derivative investments [Member] | Cash flow hedges | Foreign Currency Contract [Member] | Designated as Hedging Instrument [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	615	[3]	420	[3]
Asset Fair Value	32	[3]	39	[3]
Liability Fair Value	46	[3]	26	[3]
Derivative investments [Member] | Fair value hedges | Interest Rate Contract [Member] | Designated as Hedging Instrument [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	875	[3]	875	[3]
Asset Fair Value	92	[3]	269	[3]
Liability Fair Value	33	[3]
Other liabilities [Member] | Credit Risk Contract [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	126	[4]	148	[4]
Liability Fair Value	2	[4]	11	[4]
Future contract benefits [Member] | Indexed annuity and universal life contracts embedded derivatives [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments
Outstanding derivative instruments with off-balance-sheet risks
Liability Fair Value	1,048	[5]	732	[5]
Future contract benefits [Member] | GLB Embedded Derivative Reserves [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments
Outstanding derivative instruments with off-balance-sheet risks
Asset Fair Value	1,244	[5]
Liability Fair Value			909	[5]
Reinsurance related [Member] | Reinsurance Related [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments
Outstanding derivative instruments with off-balance-sheet risks
Liability Fair Value	$ 108	[6]	$ 215	[6]

[1] As of December 31, 2013, the latest maturity date for which we were hedging our exposure to the variability in future cash flows for these instruments was April 2067.

[2] As of December 31, 2013, the latest maturity date for which we were hedging our exposure to the variability in future cash flows for these instruments was April 2028.

[3] Reported in derivative investments and other liabilities on our Consolidated Balance Sheets.

[4] Reported in other liabilities on our Consolidated Balance Sheets.

[5] Reported in future contract benefits on our Consolidated Balance Sheets.

[6] Reported in reinsurance related embedded derivatives on our Consolidated Balance Sheets.