Fair Value Measurements (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Liabilities of Managed Investment Entities [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Financial liabilities, Beginning Balance	$ (2,322)		$ (2,482)		$ (2,411)		$ (2,745)
Total realized/unrealized gains (losses) included in Net income	5	[1]	17	[2]	(3)	[3]	(22)	[4]
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0		0		0		0
Purchases and issuances	(135)		(95)		(335)		(501)
Sales and settlements	69		236		366		925
Transfer into Level 3	0		0		0		0
Transfer out of Level 3	0		0		0		19
Financial liabilities, Ending Balance	(2,383)		(2,324)		(2,383)		(2,324)
Embedded derivatives [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Financial liabilities, Beginning Balance	(1,026)		(577)		(804)		(465)
Total realized/unrealized gains (losses) included in Net income	(21)		(33)		(153)		(110)
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0		0		0		0
Purchases and issuances	(51)		(53)		(162)		(102)
Sales and settlements	13		10		34		24
Transfer into Level 3	0		0		0		0
Transfer out of Level 3	0		0		0		0
Financial liabilities, Ending Balance	$ (1,085)		$ (653)		$ (1,085)		$ (653)

[1] Total realized/unrealized gains (losses) included in net income includes gains of $6 million related to liabilities outstanding as of September 30, 2014. See Note H — “Managed Investment Entities.”

[2] Total realized/unrealized gains (losses) included in net income includes gains of $20 million related to liabilities outstanding as of September 30, 2013. See Note H — “Managed Investment Entities.”

[3] Total realized/unrealized gains (losses) included in net income includes gains of $12 million related to liabilities outstanding as of September 30, 2014. See Note H — “Managed Investment Entities.”

[4] Total realized/unrealized gains (losses) included in net income includes gains of $2 million related to liabilities outstanding as of September 30, 2013. See Note H — “Managed Investment Entities.”