Annual report pursuant to Section 13 and 15(d)

ACCOUNTING STANDARDS UPDATE (Details)

v3.20.4
ACCOUNTING STANDARDS UPDATE (Details) - USD ($)
$ in Millions
Jan. 01, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Acl Balance End Of Period $ 887 $ 1,866 $ 887 $ 868
Increase (decrease) in Net Charge-offs, percent 44.00%      
Cumulative Effect, Period of Adoption, Adjustment        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Financing Receivable Allowance For Credit Loss Including Off Balance Sheet Credit Loss Liability $ 393