DEPOSITS - Maturities of Term Deposits Greater than $100,000 (Details) $ in Millions	Dec. 31, 2021 USD ($)
Contractual Maturities, Time Deposits, $100,000 or More [Abstract]
Three months or less	$ 1,298
After three months through six months	140
After six months through twelve months	154
After twelve months	101
Total term deposits	$ 1,693