Debt (Maturity Of VIE Notes, By Segment) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010
Schedule Of Maturity Variable Interest Entity Notes By Segment [Line Items]
VIE notes at fair value	$ 4,800
Variable Interest Entities [Member]
Schedule Of Maturity Variable Interest Entity Notes By Segment [Line Items]
2012	420	[1]
2013	382	[1]
2014	477	[1]
2015	761	[1]
2016	1,165	[1]
Thereafter	5,492	[1]
Total	8,697	[1]	10,590
Total	360		360
VIE notes at fair value	4,754		6,680
Structured Finance And International Insurance [Member] | Variable Interest Entities [Member]
Schedule Of Maturity Variable Interest Entity Notes By Segment [Line Items]
2012	420
2013	382
2014	304
2015	761
2016	560
Thereafter	5,167
Total	7,594
Conduits [Member] | Variable Interest Entities [Member]
Schedule Of Maturity Variable Interest Entity Notes By Segment [Line Items]
2014	173
2016	605
Thereafter	325
Total	$ 1,103

[1] Includes $4.8 billion of VIE notes accounted for at fair value as of December 31, 2011.