Regulation and Capital Adequacy - Risk-based Capital Ratios (Parenthetical) (Detail) |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2021 |
Dec. 31, 2020 |
|
| CECL adoption, percentage of increase in regulatory capital to increase in allowance for credit loss | 25.00% | 25.00% |
| Jr subordinated debt included in Tier 2 capital | 10.00% | 20.00% |
| Jr subordinated debt phased out of regulatory capital | 90.00% | 80.00% |
| GS Bank USA [Member] | ||
| CECL adoption, percentage of increase in regulatory capital to increase in allowance for credit loss | 25.00% | 25.00% |