Derivatives (Earned Income On Derivatives) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Total earned income	$ 309	$ 667	$ 803
Derivatives Designated as Hedging Instruments [Member] | Net Investment Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total earned income	135	111	98
Derivatives Designated as Hedging Instruments [Member] | Interest Credited to Policyholder Account Balance [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total earned income	150	164	214
Derivatives Designated as Hedging Instruments [Member] | Other Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total earned income	(6)	(5)	(4)
Derivatives Not Designated or Not Qualifying as Hedging Instruments [Member] | Net Investment Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total earned income	(6)	(6)	(8)
Derivatives Not Designated or Not Qualifying as Hedging Instruments [Member] | Other Revenues [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total earned income	0	47	75
Derivatives Not Designated or Not Qualifying as Hedging Instruments [Member] | Net Derivative Gains (Losses) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total earned income	328	476	411
Derivatives Not Designated or Not Qualifying as Hedging Instruments [Member] | Policyholder Benefits and Claims [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total earned income	$ (292)	$ (120)	$ 17