DEPOSITS - Additional Information (Details) - USD ($) $ in Millions |
Mar. 31, 2022 |
Dec. 31, 2021 |
|---|---|---|
| DEPOSITS | ||
| Certificates of deposits of $250,000 or more, maturities within one year | $ 352 | $ 361 |
| Certificates of deposits of $250,000 or more, maturities after one year | 5 | 6 |
| Certificates of deposits of $250,000 or more, total | 357 | 367 |
| Certificates of deposit of less than $ 250,000, maturities within one year | 223 | 229 |
| Certificates of deposit of less than $ 250,000, maturities after one year | 59 | 72 |
| Certificates of deposit of less than $250,000, total | $ 282 | $ 301 |