Quarterly report pursuant to Section 13 or 15(d)

LOANS / LEASES - Direct Financing Leases (Details)

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LOANS / LEASES - Direct Financing Leases (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year One $ 600  
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received 1,700  
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Two 400  
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Three 300  
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Four 200  
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Five 100  
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, after Year Five 100  
Commercial and industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross investment in commercial and industrial lease financing receivables 2,336 $ 2,401
Direct Financing Leases, Initial Direct Costs 21 21
Direct Financing Lease, Deferred Selling Profit 190 200
Direct Financing Lease, Net Investment in Lease, Total 2,167 2,222
Direct Financing Lease, Lease Receivable 1,714 1,737
Direct Financing Lease, Unguaranteed Residual Asset $ 622 $ 664