Guarantees and Contingent Liabilities (Details) (USD $)	3 Months Ended
	Mar. 31, 2011	Jun. 30, 2011
Guarantees and Contingent Liabilities (Textuals) [Abstract]
Gain related to effective repurchase of a portion of Class B Visa shares	$ 22,000,000
Liability related to the remaining Visa Litigation, carrying amount		28,000,000
Value of airline tickets purchased to deliver at a future date		7,400,000,000
Company held collateral in escrow deposits, letters of credit and indemnities from financial institutions, and liens on various assets		609,000,000
Amount reserved for potential losses from representations and warranty obligations		173,000,000
Third party borrowing arrangements [Member]
Summary of other guarantees and contingent liabilities
Guarantor Obligations, Carrying Value		0
Maximum Potential Future Payments		129,000,000
Securities lending indemnifications [Member]
Summary of other guarantees and contingent liabilities
Guarantor Obligations, Carrying Value		0
Maximum Potential Future Payments		9,114,000,000
Assets sales [Member]
Summary of other guarantees and contingent liabilities
Guarantor Obligations, Carrying Value		241,000,000
Maximum Potential Future Payments		1,903,000,000
Merchant processing [Member]
Summary of other guarantees and contingent liabilities
Guarantor Obligations, Carrying Value		74,000,000
Maximum Potential Future Payments		78,715,000,000
Minimum revenue guarantees [Member]
Summary of other guarantees and contingent liabilities
Guarantor Obligations, Carrying Value		24,000,000
Maximum Potential Future Payments		37,000,000
Other guarantees [Member]
Summary of other guarantees and contingent liabilities
Guarantor Obligations, Carrying Value		53,000,000
Maximum Potential Future Payments		8,924,000,000
Other contingent liabilities [Member]
Summary of other guarantees and contingent liabilities
Guarantor Obligations, Carrying Value		5,000,000
Maximum Potential Future Payments		5,000,000
Standby letters of credit [Member]
Summary of other guarantees and contingent liabilities
Guarantor Obligations, Carrying Value		100,000,000
Maximum Potential Future Payments		$ 19,290,000,000