Variable Interest Entities ("VIE's") (Consolidated Variable Interest Entity Settlement Payments and Mark-to-Market Adjustments) (Details) (Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Consolidated Variable Interest Entity Settlement Payments And Mark To Market Adjustments [Line Items]
Gains (losses) for consolidated variable interest entities	$ 101	[1]	$ 163	[1]
Credit default swaps [Member]
Consolidated Variable Interest Entity Settlement Payments And Mark To Market Adjustments [Line Items]
Gains (losses) for consolidated variable interest entities	101		166
Contingent forwards
Consolidated Variable Interest Entity Settlement Payments And Mark To Market Adjustments [Line Items]
Gains (losses) for consolidated variable interest entities			$ (3)

[1] Reported in realized gain (loss) on our Consolidated Statements of Comprehensive Income (Loss).