Variable Interest Entities (Unconsolidated Variable Interest Entities) (Details) (USD $) In Millions, unless otherwise specified				3 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2012 Unconsolidated VIEs [Member]	Jun. 30, 2012 PTL [Member]	Sep. 30, 2012 PTL [Member]	Sep. 30, 2012 PTL [Member] Investment in Unconsolidated VIEs [Member]	Dec. 31, 2011 PTL [Member] Investment in Unconsolidated VIEs [Member]	Sep. 30, 2012 All Other [Member] Investment in Unconsolidated VIEs [Member]	Dec. 31, 2011 All Other [Member] Investment in Unconsolidated VIEs [Member]	Sep. 30, 2012 Total [Member] Investment in Unconsolidated VIEs [Member]	Dec. 31, 2011 Total [Member] Investment in Unconsolidated VIEs [Member]
Variable Interest Entity [Line Items]
Non Controlling Stake In VIE					$ 2,732
Outstanding Debt Paid By Limited Partner To Company Financed Through Third Parties And Recapitalization				4,750
Partnership interest					816
Loans and advances					1,880
Real Estate Investments, Net			3,151
Debt Investment Fund			4,792
Factored Receivables			1,876
Other assets and investment securities						2,732	7,038	8,273	6,954	11,005	13,992
Financing receivables	271,623	288,847				0	0	3,171	2,507	3,171	2,507
Total investment						2,732	7,038	11,444	9,461	14,176	16,499
Contractual obligations to fund new investments or guarantees						159	600	2,314	2,253	2,473	2,853
Revolving lines of credit						0	1,356	68	92	68	1,448
Total						$ 2,891	$ 8,994	$ 13,826	$ 11,806	$ 16,717	$ 20,800