Annual report pursuant to Section 13 and 15(d)

OTHER REGULATORY MATTERS - Narrative (Details)

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OTHER REGULATORY MATTERS - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
BankingRegulation [Abstract]    
Average required reserve balance on deposits $ 7,200 $ 3,900
Amount bank could lend to single affiliate 1,600  
Cash dividends paid to the holding company $ 1,400