Derivatives (Earned Income On Derivatives) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Total earned income	$ 158	$ 277	$ 432	$ 294
Derivatives Designated as Hedging Instruments [Member] | Net Investment Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total earned income	34	35	67	71
Derivatives Designated as Hedging Instruments [Member] | Interest Credited to Policyholder Account Balance [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total earned income	32	36	64	71
Derivatives Designated as Hedging Instruments [Member] | Other Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total earned income	0	(1)	(1)	(4)
Derivatives Not Designated or Not Qualifying as Hedging Instruments [Member] | Net Investment Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total earned income	(1)	(2)	(2)	(3)
Derivatives Not Designated or Not Qualifying as Hedging Instruments [Member] | Net Derivative Gains (Losses) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total earned income	149	200	368	215
Derivatives Not Designated or Not Qualifying as Hedging Instruments [Member] | Policyholder Benefits and Claims [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total earned income	$ (56)	$ 9	$ (64)	$ (56)