LOANS (Details 8) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended			12 Months Ended
	Jun. 30, 2014		Jun. 30, 2013	Jun. 30, 2014		Jun. 30, 2013	Dec. 31, 2013
Financing receivable impaired
Number of months in sustained period of repayment performance for cash-basis loans to return to an accrual status				6 months
Corporate
Financing receivable impaired
Recorded investment	$ 1,218	[1]		$ 1,218	[1]		$ 1,908	[1]
Unpaid principal balance	1,776			1,776			2,513
Related specific allowance	183			183			268
Average carrying value				1,731	[2]		2,183	[2]
Interest Income Recognized	15	[3]	10	25	[3]	18
Impaired financing receivable with specific allowance	434	[1]		434	[1]		925	[1]
Impaired financing receivable without specific allowance	784	[1]		784	[1]		983	[1]
Corporate | Commercial and industrial
Financing receivable impaired
Recorded investment	618	[1]		618	[1]		769	[1]
Unpaid principal balance	979			979			1,074
Related specific allowance	119			119			79
Average carrying value				776	[2]		967	[2]
Interest Income Recognized	9	[3]		14	[3]
Impaired financing receivable with specific allowance	301	[1]		301	[1]		401	[1]
Impaired financing receivable without specific allowance	316	[1]		316	[1]		368	[1]
Corporate | Financial institutions
Financing receivable impaired
Recorded investment	257	[1]		257	[1]		365	[1]
Unpaid principal balance	277			277			382
Related specific allowance	1			1			3
Average carrying value				325	[2]		378	[2]
Interest Income Recognized	0	[3]		4	[3]
Impaired financing receivable with specific allowance	7	[1]		7	[1]		24	[1]
Impaired financing receivable without specific allowance	250	[1]		250	[1]		341	[1]
Corporate | Mortgage and real estate
Financing receivable impaired
Recorded investment	242	[1]		242	[1]		515	[1]
Unpaid principal balance	282			282			651
Related specific allowance	17			17			35
Average carrying value				415	[2]		585	[2]
Interest Income Recognized	6	[3]		7	[3]
Impaired financing receivable with specific allowance	33	[1]		33	[1]		253	[1]
Impaired financing receivable without specific allowance	209	[1]		209	[1]		262	[1]
Corporate | Lease financing
Financing receivable impaired
Recorded investment	49	[1]		49	[1]		189	[1]
Unpaid principal balance	50			50			190
Related specific allowance	29			29			131
Average carrying value				154	[2]		189	[2]
Impaired financing receivable with specific allowance	47	[1]		47	[1]		186	[1]
Impaired financing receivable without specific allowance	2	[1]		2	[1]		3	[1]
Corporate | Other
Financing receivable impaired
Recorded investment	52	[1]		52	[1]		70	[1]
Unpaid principal balance	188			188			216
Related specific allowance	17			17			20
Average carrying value				61	[2]		64	[2]
Interest Income Recognized	0	[3]		0	[3]
Impaired financing receivable with specific allowance	46	[1]		46	[1]		61	[1]
Impaired financing receivable without specific allowance	$ 7	[1]		$ 7	[1]		$ 9	[1]

[1] Recorded investment in a loan includes net deferred loan fees and costs, unamortized premium or discount, less any direct write-downs.

[2] Average carrying value represents the average recorded investment balance and does not include related specific allowance.

[3] Interest income recognized for the three- and six-month periods ended June 30, 2013 was $10 million and $18 million, respectively.