Financial Instruments Derivatives Not Designated as Hedging, Fair Value Table (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Not Designated as Hedging Instrument [Member] | Other assets [Member]
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]
Asset Derivatives, Gross	$ 79	[1]	$ 18	[1]
Asset Derivatives, Netting across contract types	(3)	[1],[2]	(17)	[1],[2]
Asset Derivatives, Total	76	[1],[2]	1	[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	1,468	[3]	687	[3]
Liability Derivatives, Netting across contract types	(3)	[2],[3]	(17)	[2],[3]
Derivative contracts at fair value (liability)	1,465	[2],[3]	670	[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	0	[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	1,377	[3]	654	[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	0	[1]	1	[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	14	[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	[1]	0	[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	74	[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	77	[1]	17	[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	3	[3]	33	[3]
Investment Funds [Member] | Investment Segment [Member]
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]
Cash collateral posted for derivative positions	$ 1,200		$ 255

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

[2] Excludes netting of cash collateral received and posted. The total collateral posted at June 30, 2014 and December 31, 2013 was $1.2 billion and $255 million, respectively, across all counterparties.

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