LOANS (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
LOANS
Number of loan categories	2
Loans
Loans, net of unearned income	$ 664,221,000,000		$ 665,472,000,000
Consumer
Loans
Total loans	385,207,000,000		394,403,000,000
Net unearned income	(546,000,000)		(572,000,000)
Loans, net of unearned income	384,661,000,000		393,831,000,000
Loans sold and/or reclassified to held-for-sale	400,000,000	3,700,000,000
In U.S. offices | Consumer
Loans
Total loans	234,686,000,000		244,094,000,000
In U.S. offices | Consumer | Mortgage and real estate
Loans
Total loans	106,904,000,000		108,453,000,000
In U.S. offices | Consumer | Installment, revolving credit and other
Loans
Total loans	12,951,000,000		13,398,000,000
In U.S. offices | Consumer | Credit cards
Loans
Total loans	107,947,000,000		115,651,000,000
In U.S. offices | Consumer | Commercial and industrial
Loans
Total loans	6,884,000,000		6,592,000,000
In offices outside the U.S. | Consumer
Loans
Total loans	150,521,000,000		150,309,000,000
In offices outside the U.S. | Consumer | Mortgage and real estate
Loans
Total loans	56,118,000,000		55,511,000,000
In offices outside the U.S. | Consumer | Installment, revolving credit and other
Loans
Total loans	33,409,000,000		33,182,000,000
In offices outside the U.S. | Consumer | Credit cards
Loans
Total loans	35,683,000,000		36,740,000,000
In offices outside the U.S. | Consumer | Commercial and industrial
Loans
Total loans	24,575,000,000		24,107,000,000
In offices outside the U.S. | Consumer | Lease financing
Loans
Total loans	$ 736,000,000		$ 769,000,000