LOANS (Details 5) (USD $)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2011	Jun. 30, 2011	Dec. 31, 2010
Financing receivable
Loans	$ 4,840,000,000	$ 4,840,000,000	$ 4,372,000,000
Loans, net of unearned income	647,500,000,000	647,500,000,000	648,794,000,000
Corporate.
Financing receivable
Held-for-investment corporate loans sold and/or reclassified	1,600,000,000	3,700,000,000
Number of days past due for reversal of accrued interest and charging to earnings (in days)	90	90	90
Loans, equal to 30- 89 days past due and accruing	1,015,000,000	1,015,000,000	581,000,000
Loans, greater than or equal to 90 days past due and accruing	122,000,000	122,000,000	111,000,000
Loans, total Past due and accruing	1,137,000,000	1,137,000,000	692,000,000
Loans, total non-accrual	4,819,000,000	4,819,000,000	8,610,000,000
Loans, total current	195,082,000,000	195,082,000,000	179,233,000,000
Loans	3,418,000,000	3,418,000,000	2,627,000,000
Loans, net of unearned income	204,456,000,000	204,456,000,000	191,162,000,000
Number of days past due, non-accrual status (in days)	90	90	90
Loans less than this number of days past due are considered current (in days)	30	30	30
Corporate. | Mortgage and real estate
Financing receivable
Loans, equal to 30- 89 days past due and accruing	435,000,000	435,000,000	376,000,000
Loans, greater than or equal to 90 days past due and accruing	85,000,000	85,000,000	20,000,000
Loans, total Past due and accruing	520,000,000	520,000,000	396,000,000
Loans, total non-accrual	1,911,000,000	1,911,000,000	1,782,000,000
Loans, total current	24,569,000,000	24,569,000,000	22,892,000,000
Loans, net of unearned income	27,000,000,000	27,000,000,000	25,070,000,000
Corporate. | Commercial and industrial
Financing receivable
Loans, equal to 30- 89 days past due and accruing	170,000,000	170,000,000	94,000,000
Loans, greater than or equal to 90 days past due and accruing	14,000,000	14,000,000	39,000,000
Loans, total Past due and accruing	184,000,000	184,000,000	133,000,000
Loans, total non-accrual	1,326,000,000	1,326,000,000	5,125,000,000
Loans, total current	87,069,000,000	87,069,000,000	76,862,000,000
Loans, net of unearned income	88,579,000,000	88,579,000,000	82,120,000,000
Corporate. | Lease financing
Financing receivable
Loans, equal to 30- 89 days past due and accruing	7,000,000	7,000,000	9,000,000
Loans, greater than or equal to 90 days past due and accruing	11,000,000	11,000,000
Loans, total Past due and accruing	18,000,000	18,000,000	9,000,000
Loans, total non-accrual	24,000,000	24,000,000	45,000,000
Loans, total current	1,947,000,000	1,947,000,000	1,890,000,000
Loans, net of unearned income	1,989,000,000	1,989,000,000	1,944,000,000
Corporate. | Other,
Financing receivable
Loans, equal to 30- 89 days past due and accruing	395,000,000	395,000,000	100,000,000
Loans, greater than or equal to 90 days past due and accruing	12,000,000	12,000,000	52,000,000
Loans, total Past due and accruing	407,000,000	407,000,000	152,000,000
Loans, total non-accrual	439,000,000	439,000,000	400,000,000
Loans, total current	27,477,000,000	27,477,000,000	26,941,000,000
Loans, net of unearned income	28,323,000,000	28,323,000,000	27,493,000,000
Corporate. | Financial institutions
Financing receivable
Loans, equal to 30- 89 days past due and accruing	8,000,000	8,000,000	2,000,000
Loans, total Past due and accruing	8,000,000	8,000,000	2,000,000
Loans, total non-accrual	1,119,000,000	1,119,000,000	1,258,000,000
Loans, total current	54,020,000,000	54,020,000,000	50,648,000,000
Loans, net of unearned income	$ 55,147,000,000	$ 55,147,000,000	$ 51,908,000,000