LOANS - Corporate Loans Credit Quality Indicators (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Loans receivable
Loans, net of unearned income	$ 688,670	$ 684,196
Loans at fair value	3,824	3,223
Corporate
Loans receivable
Loans, net of unearned income	362,675	353,709
Total non-accrual	1,410	1,311
Loans at fair value	3,804	3,203
Corporate \| Commercial and industrial
Loans receivable
Loans, net of unearned income	150,987	145,286
Total non-accrual	1,064	919
Corporate \| Financial institutions
Loans receivable
Loans, net of unearned income	83,279	83,868
Total non-accrual	36	102
Corporate \| Mortgage and real estate
Loans receivable
Loans, net of unearned income	58,880	57,464
Total non-accrual	204	215
Corporate \| Lease financing
Loans receivable
Loans, net of unearned income	1,477	1,531
Total non-accrual	0	0
Corporate \| Other
Loans receivable
Loans, net of unearned income	64,248	62,357
Total non-accrual	106	75
Corporate \| Non-rated private bank loans managed on a delinquency basis
Loans receivable
Loans, net of unearned income	28,885	27,602
Corporate \| Investment grade
Loans receivable
Loans, net of unearned income	263,222	259,992
Corporate \| Investment grade \| Commercial and industrial
Loans receivable
Loans, net of unearned income	106,432	102,722
Corporate \| Investment grade \| Financial institutions
Loans receivable
Loans, net of unearned income	72,625	73,080
Corporate \| Investment grade \| Mortgage and real estate
Loans receivable
Loans, net of unearned income	26,569	25,855
Corporate \| Investment grade \| Lease financing
Loans receivable
Loans, net of unearned income	945	1,036
Corporate \| Investment grade \| Other
Loans receivable
Loans, net of unearned income	56,651	57,299
Corporate \| Non-investment grade
Loans receivable
Loans, net of unearned income	66,764	62,912
Corporate \| Non-investment grade \| Commercial and industrial
Loans receivable
Loans, net of unearned income	43,491	41,645
Total non-accrual	1,064	919
Corporate \| Non-investment grade \| Financial institutions
Loans receivable
Loans, net of unearned income	10,618	10,686
Total non-accrual	36	102
Corporate \| Non-investment grade \| Mortgage and real estate
Loans receivable
Loans, net of unearned income	3,222	3,793
Total non-accrual	204	215
Corporate \| Non-investment grade \| Lease financing
Loans receivable
Loans, net of unearned income	532	496
Total non-accrual	0	0
Corporate \| Non-investment grade \| Other
Loans receivable
Loans, net of unearned income	7,491	4,981
Total non-accrual	$ 106	$ 75

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Amount of financing receivable on nonaccrual status.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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