Total amount of portfolio loans sold and or reclassified to loans held-for-sale during the period.

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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

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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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LOANS - Corporate Loans (Details) - USD ($) $ in Millions	3 Months Ended
LOANS - Corporate Loans (Details) - USD ($) $ in Millions	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Loans
Loans, net of unearned income	$ 682,346		$ 684,196
Corporate
Loans
Total loans	363,267		354,531
Net unearned income	(808)		(822)
Loans, net of unearned income	362,459		353,709
Loans sold and/or reclassified to held-for-sale	100	$ 100
Corporate \| Commercial and industrial
Loans
Loans, net of unearned income	152,831		145,286
Corporate \| Financial institutions
Loans
Loans, net of unearned income	87,016		83,868
Corporate \| Mortgage and real estate
Loans
Loans, net of unearned income	56,732		57,464
Corporate \| Lease financing
Loans
Loans, net of unearned income	1,500		1,531
Corporate \| In U.S. offices
Loans
Total loans	190,602		185,310
Corporate \| In U.S. offices \| Commercial and industrial
Loans
Total loans	56,698		52,063
Corporate \| In U.S. offices \| Financial institutions
Loans
Total loans	49,985		48,447
Corporate \| In U.S. offices \| Mortgage and real estate
Loans
Total loans	49,746		50,124
Corporate \| In U.S. offices \| Installment, revolving credit and other
Loans
Total loans	32,768		33,247
Corporate \| In U.S. offices \| Lease financing
Loans
Total loans	1,405		1,429
Corporate \| In offices outside the U.S.
Loans
Total loans	172,665		169,221
Corporate \| In offices outside the U.S. \| Commercial and industrial
Loans
Total loans	97,844		94,701
Corporate \| In offices outside the U.S. \| Financial institutions
Loans
Total loans	39,155		36,837
Corporate \| In offices outside the U.S. \| Mortgage and real estate
Loans
Total loans	7,005		7,376
Corporate \| In offices outside the U.S. \| Installment, revolving credit and other
Loans
Total loans	24,868		25,684
Corporate \| In offices outside the U.S. \| Lease financing
Loans
Total loans	95		103
Corporate \| In offices outside the U.S. \| Government and official institutions
Loans
Total loans	$ 3,698		$ 4,520