LOANS (Details) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2011	Dec. 31, 2010
LOANS
Number of loan categories	2	2
Loans
Consumer loans, net of unearned income	$ 443,044,000,000	$ 443,044,000,000	$ 457,632,000,000
In U.S. offices | Consumer
Loans
Total loans	286,583,000,000	286,583,000,000	307,167,000,000
In U.S. offices | Consumer | Mortgage and real estate
Loans
Total loans	143,002,000,000	143,002,000,000	151,469,000,000
In U.S. offices | Consumer | Installment, revolving credit and other
Loans
Total loans	23,693,000,000	23,693,000,000	28,291,000,000
In U.S. offices | Consumer | Credit cards
Loans
Total loans	114,149,000,000	114,149,000,000	122,384,000,000
In U.S. offices | Consumer | Commercial and industrial
Loans
Total loans	5,737,000,000	5,737,000,000	5,021,000,000
In U.S. offices | Consumer | Lease financing
Loans
Total loans	2,000,000	2,000,000	2,000,000
In offices outside the U.S. | Consumer
Loans
Total loans	156,584,000,000	156,584,000,000	150,396,000,000
In offices outside the U.S. | Consumer | Mortgage and real estate
Loans
Total loans	54,283,000,000	54,283,000,000	52,175,000,000
In offices outside the U.S. | Consumer | Installment, revolving credit and other
Loans
Total loans	38,954,000,000	38,954,000,000	38,024,000,000
In offices outside the U.S. | Consumer | Credit cards
Loans
Total loans	40,354,000,000	40,354,000,000	40,948,000,000
In offices outside the U.S. | Consumer | Commercial and industrial
Loans
Total loans	22,350,000,000	22,350,000,000	18,584,000,000
In offices outside the U.S. | Consumer | Lease financing
Loans
Total loans	643,000,000	643,000,000	665,000,000
Consumer
Loans
Total loans	443,167,000,000	443,167,000,000	457,563,000,000
Net unearned income	(123,000,000)	(123,000,000)	69,000,000
Consumer loans, net of unearned income	441,492,000,000	441,492,000,000	457,632,000,000
Sold and/or reclassified consumer loans	$ 4,000,000,000	$ 10,900,000,000