LOANS (Details 5) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Loans
Loans, net of unearned income	$ 653,826		$ 665,472
Corporate
Loans
Total loans	278,044		272,203
Net unearned income (loss)	(536)		(562)
Loans, net of unearned income	277,508	[1]	271,641	[1]
Corporate | Commercial and industrial
Loans
Loans, net of unearned income	114,157	[1]	113,831	[1]
Corporate | Financial institutions
Loans
Loans, net of unearned income	66,497	[1]	62,069	[1]
Corporate | Mortgage and real estate
Loans
Loans, net of unearned income	38,366	[1]	34,900	[1]
Corporate | Lease financing
Loans
Loans, net of unearned income	2,133	[1]	2,174	[1]
In U.S. offices | Corporate
Loans
Total loans	132,832		123,312
In U.S. offices | Corporate | Commercial and industrial
Loans
Total loans	36,516		32,704
In U.S. offices | Corporate | Financial institutions
Loans
Total loans	31,916		25,102
In U.S. offices | Corporate | Mortgage and real estate
Loans
Total loans	32,285	[2]	29,425	[2]
In U.S. offices | Corporate | Installment, revolving credit and other
Loans
Total loans	30,378		34,434
In U.S. offices | Corporate | Lease financing
Loans
Total loans	1,737		1,647
In offices outside the U.S. | Corporate
Loans
Total loans	145,212		148,891
In offices outside the U.S. | Corporate | Commercial and industrial
Loans
Total loans	80,304		82,663
In offices outside the U.S. | Corporate | Financial institutions
Loans
Total loans	35,854		38,372
In offices outside the U.S. | Corporate | Mortgage and real estate
Loans
Total loans	6,243	[2]	6,274	[2]
In offices outside the U.S. | Corporate | Installment, revolving credit and other
Loans
Total loans	20,151		18,714
In offices outside the U.S. | Corporate | Lease financing
Loans
Total loans	396		527
In offices outside the U.S. | Corporate | Government and official institutions
Loans
Total loans	$ 2,264		$ 2,341

[1] Total loans include loans at fair value, which are not included in the various delinquency columns.

[2] Loans secured primarily by real estate.