LOANS (Details 6) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Loans receivable
Loans at fair value	$ 5,029,000,000	$ 5,287,000,000
Loans, net of unearned income	665,472,000,000	655,464,000,000
Corporate
Loans receivable
Loans sold and/or reclassified to held-for-sale	5,800,000,000	4,400,000,000
Number of days past due for reversal of accrued interest and charging to earnings	90 days	90 days
Loans, equal to 30- 89 days past due and accruing	311,000,000	344,000,000
Loans, greater than or equal to 90 days past due and accruing	183,000,000	125,000,000
Loans, total Past due and accruing	494,000,000	469,000,000
Loans, total non-accrual	1,908,000,000	2,333,000,000
Loans, total current	265,167,000,000	239,935,000,000
Loans at fair value	4,072,000,000	4,056,000,000
Loans, net of unearned income	271,641,000,000	246,793,000,000
Number of days past due, non-accrual status	90 days	90 days
Loans less than this number of days past due are considered current	30 days	30 days
Corporate | Commercial and industrial
Loans receivable
Loans, equal to 30- 89 days past due and accruing	72,000,000	38,000,000
Loans, greater than or equal to 90 days past due and accruing	5,000,000	10,000,000
Loans, total Past due and accruing	77,000,000	48,000,000
Loans, total non-accrual	769,000,000	1,078,000,000
Loans, total current	112,985,000,000	107,650,000,000
Loans, net of unearned income	113,831,000,000	108,776,000,000
Corporate | Financial institutions
Loans receivable
Loans, equal to 30- 89 days past due and accruing		5,000,000
Loans, total Past due and accruing		5,000,000
Loans, total non-accrual	365,000,000	454,000,000
Loans, total current	61,704,000,000	53,858,000,000
Loans, net of unearned income	62,069,000,000	54,317,000,000
Corporate | Mortgage and real estate
Loans receivable
Loans, equal to 30- 89 days past due and accruing	183,000,000	224,000,000
Loans, greater than or equal to 90 days past due and accruing	175,000,000	109,000,000
Loans, total Past due and accruing	358,000,000	333,000,000
Loans, total non-accrual	515,000,000	680,000,000
Loans, total current	34,027,000,000	30,057,000,000
Loans, net of unearned income	34,900,000,000	31,070,000,000
Corporate | Leases
Loans receivable
Loans, equal to 30- 89 days past due and accruing	9,000,000	7,000,000
Loans, greater than or equal to 90 days past due and accruing	1,000,000
Loans, total Past due and accruing	10,000,000	7,000,000
Loans, total non-accrual	189,000,000	52,000,000
Loans, total current	1,975,000,000	1,956,000,000
Loans, net of unearned income	2,174,000,000	2,015,000,000
Corporate | Other
Loans receivable
Loans, equal to 30- 89 days past due and accruing	47,000,000	70,000,000
Loans, greater than or equal to 90 days past due and accruing	2,000,000	6,000,000
Loans, total Past due and accruing	49,000,000	76,000,000
Loans, total non-accrual	70,000,000	69,000,000
Loans, total current	54,476,000,000	46,414,000,000
Loans, net of unearned income	$ 54,595,000,000	$ 46,559,000,000