REGULATORY MATTERS - Transition Schedule for New Ratios, Including the Capital Conservation Buffer (Details) - Phased in Beginning 2018 [Member]	Dec. 31, 2021
Minimum common equity tier 1 capital ratio	4.50%
Minimum common equity tier 1 capital ratio plus capital conservation buffer	7.00%
Minimum tier 1 capital ratio	6.0
Minimum tier 1 capital ratio plus capital conservation buffer	8.50%
Minimum total capital ratio	8.0
Minimum total capital ratio plus capital conservation buffer	10.50%