Fair Value Measurements (Details 3) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014		Jun. 30, 2015	Jun. 30, 2014
Liabilities of Managed Investment Entities [Member]
Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Financial liabilities, Beginning Balance			$ (2,322)		$ (2,701)	$ (2,411)
Impact of accounting change	[1]				2,701
Total realized/unrealized gains (losses) included in Net income			(9)	[2]	0	(8)	[3]
Total realized/unrealized gains (losses) included in other comprehensive income (loss)			0		0	0
Purchases and issuances			(155)		0	(200)
Sales and settlements			164		0	297
Transfer into Level 3			0		0	0
Transfer out of Level 3			0		0	0
Financial liabilities, Ending Balance		$ 0	(2,322)		0	(2,322)
Embedded derivatives [Member]
Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Financial liabilities, Beginning Balance		(1,243)	(904)		(1,160)	(804)
Impact of accounting change					0
Total realized/unrealized gains (losses) included in Net income		19	(78)		(31)	(132)
Total realized/unrealized gains (losses) included in other comprehensive income (loss)		0	0		0	0
Purchases and issuances		(48)	(56)		(95)	(111)
Sales and settlements		14	12		28	21
Transfer into Level 3		0	0		0	0
Transfer out of Level 3		0	0		0	0
Financial liabilities, Ending Balance		$ (1,258)	$ (1,026)		$ (1,258)	$ (1,026)

[1] The impact of implementing new guidance adopted in 2015, as discussed above and in Note A — “Accounting Policies — Managed Investment Entities.”

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

[3] Total realized/unrealized gains (losses) included in net income includes gains of $5 million related to liabilities outstanding as of June 30, 2014. See Note H — “Managed Investment Entities.”