Consolidated Investment Entities (Details 2) (Consolidated Investment Entities, USD $)	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Summary of changes in Level 3 assets held by consolidated investment entities
Transfers between Level 1 and Level 2	$ 0
Corporate debt securities
Summary of changes in Level 3 assets held by consolidated investment entities
Balance, at the beginning of the period	2,000,000		3,000,000
Total Gains (Losses) Included in Net Income-Assets	1,000,000	[1]	0
Total Gains (Losses) Included in Other Comprehensive loss-Assets	0		0
Purchases, Net-Assets	2,000,000		0
Sales, Net-Assets	(2,000,000)		0
Issues, Net-Liabilities	0
Settlements, Net-Assets	0		0
Transfers into Level 3	10,000,000		0
Transfers out of Level 3	0		0
Balance, at the end of the period	13,000,000		3,000,000
Changes in unrealized gains/ (losses) included in income relating to assets held	1,000,000	[1]	0
Common Stocks
Summary of changes in Level 3 assets held by consolidated investment entities
Balance, at the beginning of the period	14,000,000		14,000,000
Total Gains (Losses) Included in Net Income-Assets	2,000,000	[1]	0
Total Gains (Losses) Included in Other Comprehensive loss-Assets	0		0
Purchases, Net-Assets	0		0
Sales, Net-Assets	0		0
Issues, Net-Liabilities	0
Settlements, Net-Assets	0		0
Transfers into Level 3	6,000,000		2,000,000
Transfers out of Level 3	(12,000,000)		(8,000,000)
Balance, at the end of the period	10,000,000		8,000,000
Changes in unrealized gains/ (losses) included in income relating to assets held	2,000,000	[1]	0
Syndicated loans
Summary of changes in Level 3 assets held by consolidated investment entities
Balance, at the beginning of the period	368,000,000		202,000,000
Total Gains (Losses) Included in Net Income-Assets	4,000,000	[1]	0
Total Gains (Losses) Included in Other Comprehensive loss-Assets	0		0
Purchases, Net-Assets	96,000,000		76,000,000
Sales, Net-Assets	0		(18,000,000)
Issues, Net-Liabilities	0
Settlements, Net-Assets	(12,000,000)		(13,000,000)
Transfers into Level 3	146,000,000		51,000,000
Transfers out of Level 3	(218,000,000)		(93,000,000)
Balance, at the end of the period	384,000,000		205,000,000
Changes in unrealized gains/ (losses) included in income relating to assets held	3,000,000	[1]	0
Other assets
Summary of changes in Level 3 assets held by consolidated investment entities
Balance, at the beginning of the period	1,936,000,000		1,214,000,000
Total Gains (Losses) Included in Net Income-Assets	80,000,000	[2]	(6,000,000)	[2]
Total Gains (Losses) Included in Other Comprehensive loss-Assets	15,000,000		(77,000,000)
Purchases, Net-Assets	19,000,000		51,000,000
Sales, Net-Assets	(68,000,000)		(6,000,000)
Issues, Net-Liabilities	0
Settlements, Net-Assets	0		0
Transfers into Level 3	11,000,000		0
Transfers out of Level 3	0		0
Balance, at the end of the period	1,993,000,000		1,176,000,000
Changes in unrealized gains/ (losses) included in income relating to assets held	78,000,000	[2]	(5,000,000)	[2]
Debt
Summary of changes in Level 3 assets held by consolidated investment entities
Balance, at the beginning of the period	(4,804,000,000)		(4,450,000,000)
Total Gains (Losses) Included in Net Income-Liabilities	(10,000,000)	[1]	(24,000,000)	[1]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)	0		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases	0		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales	0		0
Issues, Net-Liabilities	(456,000,000)		(410,000,000)
Settlements, Net-Liabilities	45,000,000		289,000,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3	0		0
Balance, at the end of the period	(5,225,000,000)		(4,595,000,000)
Changes in unrealized gains/ (losses) included in income relating to liabilities held	(10,000,000)	[1]	(24,000,000)	[1]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3	$ 0		$ 0

[1] Included in net investment income in the Consolidated Statements of Operations.

[2] Included in other revenues in the Consolidated Statements of Operations.