Investments and Derivative Instruments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013		Dec. 31, 2013
Results of variable annuity hedge program [Line Items]
Certain Loans and Debt Securities Acquired in Transfer Held for Sale Allowance for Credit Losses Due to Subsequent Impairment	$ 1				$ 3
Certain Loans Acquired in Transfer Held-for-sale Accounted for as Debt Securities Carrying Amount Net	48				61
Net realized capital gains (losses)
Gross gains on sales	197	[1]	1,717	[1]
Gross losses on sales	(148)		(82)
Net OTTI losses recognized in earnings	(22)		(21)
Valuation allowances on mortgage loans	0		0
Japanese fixed annuity contract hedges, net	(9)	[2]	3	[2]
Periodic net coupon settlements on credit derivatives/Japan	3		(6)
Total results of variable annuity hedge program	(27)		(209)
Other, net	(80)	[3]	204	[3]
Net realized capital gains (losses)	(86)		1,606
U.S. [Member]
Net realized capital gains (losses)
Results of variable annuity hedge program	5		(38)
U.S. [Member] | GMWB derivatives, net [Member]
Net realized capital gains (losses)
Results of variable annuity hedge program	15		47
U.S. [Member] | Macro Hedge Program [Member]
Net realized capital gains (losses)
Results of variable annuity hedge program	(10)		(85)
International [Member]
Results of variable annuity hedge program [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	6		(34)
Net realized capital gains (losses)
Results of variable annuity hedge program	(32)		(171)
JAPAN
Results of variable annuity hedge program [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	(11)		134
Change in value of derivatives and Japan FVO securities [Member]
Results of variable annuity hedge program [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	21		(148)
Fixed Annuity Hedging Instruments [Member] | FX revaluation - Japan fixed annuity product [Member] | JAPAN
Results of variable annuity hedge program [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	$ (30)		$ 151

[1] Includes $1.5 billion of gains relating to the sales of the Retirement Plans and Individual Life businesses for the three months ended

[2] {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOjRkY2E1YmJmNWIxMDQwODZhYzkxNGU2MTBkNDhjZWZkfFRleHRTZWxlY3Rpb246RDU5ODkwQUVFMTI4NTY5MjRERTI4OUZBM0IwMkJBNjQM}

[3] Includes $71 of gains relating to the sales of the Retirement Plans and Individual Life businesses for the three months ended March 31, 2013.