Financial Instruments Gain (Loss) Recognized on Derivatives Not Designated as Hedging Table (Details) - Not Designated as Hedging Instrument [Member] - Net Gain from Investment Activities [Member] - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivative [Line Items]
Gain (Loss) Recognized in Income	[1]	$ 705	$ (782)	$ (1,887)
Equity contracts
Derivative [Line Items]
Gain (Loss) Recognized in Income	[1]	(1)	(1,251)	(1,871)
Foreign exchange contracts
Derivative [Line Items]
Gain (Loss) Recognized in Income	[1]	160	213	(80)
Credit contracts
Derivative [Line Items]
Gain (Loss) Recognized in Income	[1]	489	70	0
Commodity contracts
Derivative [Line Items]
Gain (Loss) Recognized in Income	[1]	$ 57	$ 186	$ 64

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