Financial Instruments Derivatives Not Designated as Hedging, Fair Value Table (Details) (USD $)	Mar. 31, 2015		Dec. 31, 2014
Not Designated as Hedging Instrument [Member] | Other assets [Member]
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]
Asset Derivatives, Gross	$ 111,000,000	[1]	$ 60,000,000	[1]
Asset Derivatives, Netting across contract types	(46,000,000)	[1],[2]	(10,000,000)	[1],[2]
Asset Derivatives, Total	65,000,000	[1],[2]	50,000,000	[1],[2]
Not Designated as Hedging Instrument [Member] | Accrued expenses and other liabilities [Member]
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]
Liability Derivatives, Gross	906,000,000	[3]	624,000,000	[3]
Liability Derivatives, Netting across contract types	(46,000,000)	[2],[3]	(10,000,000)	[2],[3]
Derivative contracts at fair value (liability)	860,000,000	[2],[3]	614,000,000	[2],[3]
Not Designated as Hedging Instrument [Member] | Equity contracts | Other assets [Member]
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]
Asset Derivatives, Gross	27,000,000	[1]	0	[1]
Not Designated as Hedging Instrument [Member] | Equity contracts | Accrued expenses and other liabilities [Member]
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]
Liability Derivatives, Gross	706,000,000	[3]	539,000,000	[3]
Not Designated as Hedging Instrument [Member] | Foreign exchange contracts | Other assets [Member]
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]
Asset Derivatives, Gross	12,000,000	[1]	11,000,000	[1]
Not Designated as Hedging Instrument [Member] | Foreign exchange contracts | Accrued expenses and other liabilities [Member]
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]
Liability Derivatives, Gross	0	[3]	0	[3]
Not Designated as Hedging Instrument [Member] | Credit contracts | Other assets [Member]
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]
Asset Derivatives, Gross	2,000,000	[1]	1,000,000	[1]
Not Designated as Hedging Instrument [Member] | Credit contracts | Accrued expenses and other liabilities [Member]
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]
Liability Derivatives, Gross	166,000,000	[3]	85,000,000	[3]
Not Designated as Hedging Instrument [Member] | Interest rate swap contracts | Other assets [Member]
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]
Asset Derivatives, Gross	0	[1]	1,000,000	[1]
Not Designated as Hedging Instrument [Member] | Interest rate swap contracts | Accrued expenses and other liabilities [Member]
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]
Liability Derivatives, Gross	0	[3]	0	[3]
Not Designated as Hedging Instrument [Member] | Commodity contracts | Other assets [Member]
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]
Asset Derivatives, Gross	70,000,000	[1]	47,000,000	[1]
Not Designated as Hedging Instrument [Member] | Commodity contracts | Accrued expenses and other liabilities [Member]
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]
Liability Derivatives, Gross	34,000,000	[3]	0	[3]
Investment Funds [Member] | Investment Segment [Member]
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]
Cash collateral posted for derivative positions	$ 1,800,000,000		$ 1,200,000,000

[1] Net asset derivatives are located within other assets in our condensed consolidated balance sheets.

[2] Excludes netting of cash collateral received and posted. The total collateral posted at March 31, 2015 and December 31, 2014 was approximately $1.8 billion and $1.2 billion, respectively, across all counterparties.

[3] Net liability derivatives are located within accrued expenses and other liabilities in our condensed consolidated balance sheets.