Short-Term Borrowings (Details) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Short-Term Borrowings [Abstract]
Other secured financings, short-term	$ 26,509,000,000	$ 24,529,000,000
Total unsecured short-term borrowings	56,554,000,000	47,842,000,000
Short-term borrowings	83,063,000,000	72,371,000,000
Unsecured Short-term Borrowings [Abstract]
Current portion of unsecured long-term borrowings	33,236,000,000	25,396,000,000
Hybrid financial instruments	14,456,000,000	13,223,000,000
Promissory notes	3,252,000,000	3,265,000,000
Commercial paper	925,000,000	1,306,000,000
Other short-term borrowings	4,685,000,000	4,652,000,000
Total unsecured short-term borrowings	56,554,000,000	47,842,000,000
Unsecured short-term debt, weighted average interest rate, after giving effect to hedging activities	1.74%	1.77%
Short-Term Borrowing (Textual) [Abstract]
Current Portion of Unsecured Long-term Borrowings Guaranteed by the FDIC Under the Temporary Liquidity Guarantee Program (TLGP)	$ 17,140,000,000	$ 10,430,000,000