Financial Instruments Gain (Loss) Recognized on Derivatives Not Designated as Hedging Table (Details) - Not Designated as Hedging Instrument [Member] - Net gain (loss) from investment activities [Member] - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative [Line Items]
Gain (Loss) Recognized in Income	[1]	$ 84	$ (531)	$ 83	$ (604)
Equity contracts
Derivative [Line Items]
Gain (Loss) Recognized in Income	[1]	14	(546)	(151)	(722)
Foreign exchange contracts
Derivative [Line Items]
Gain (Loss) Recognized in Income	[1]	(38)	3	136	3
Credit contracts
Derivative [Line Items]
Gain (Loss) Recognized in Income	[1]	178	(24)	149	(30)
Commodity contracts
Derivative [Line Items]
Gain (Loss) Recognized in Income	[1]	$ (70)	$ 36	$ (51)	$ 145

[1] Gains (losses) recognized on derivatives are classified in net gain from investment activities in our condensed consolidated statements of operations for our Investment segment and are included in other income (loss), net for all other segments.