Investments and Derivative Instruments (Details 15) (Cash flow hedges [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Derivative Instruments Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	$ 43		$ (70)
Net Realized Capital Gains (Losses) Recognized in Income on Derivative (Ineffective Portion)	(1)		0
Gain or (Loss) Reclassified from AOCI into Income (Effective Portion)	24		94
Interest Rate Swap [Member]
Derivative Instruments Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	44		(71)
Net Realized Capital Gains (Losses) Recognized in Income on Derivative (Ineffective Portion)	(1)
Interest Rate Swap [Member] | Net realized capital gains (losses) [Member]
Derivative Instruments Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from AOCI into Income (Effective Portion)	1	[1],[2]	73
Interest Rate Swap [Member] | Net Investment Income [Member]
Derivative Instruments Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from AOCI into Income (Effective Portion)	23		24
Foreign Currency Swap [Member]
Derivative Instruments Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	(1)		1
Net Realized Capital Gains (Losses) Recognized in Income on Derivative (Ineffective Portion)
Foreign Currency Swap [Member] | Net realized capital gains (losses) [Member]
Derivative Instruments Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from AOCI into Income (Effective Portion)	$ 0		$ (3)

[1] gains on securities relating to the sales of the Retirement Plans and Individual Life businesses.[2]The three months ended March 31, 2013 includes $71 of net gains on cash flow hedging instruments relating to the sales of the Retirement Plans and Individual Life businesses.

[2] {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOjRkY2E1YmJmNWIxMDQwODZhYzkxNGU2MTBkNDhjZWZkfFRleHRTZWxlY3Rpb246NDRDOThGMTlDQzkwOEE1QzVDOEY4OUZBMzlEOTIxQjMM}