Regulation and Capital Adequacy - Risk-based Capital and Leverage Ratios and "Well-capitalized" Requirements (Detail) - GS Bank USA [Member] |
Sep. 30, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||
| Required CET1 ratio applicable to advanced approach banking institutions | 7.00% | 7.00% |
| Required Tier 1 capital ratio applicable to advanced approach banking institutions | 8.50% | 8.50% |
| Required Total capital ratio applicable to advanced approach banking institutions | 10.50% | 10.50% |
| Required Tier 1 leverage ratio applicable to advanced approach banking institutions | 4.00% | 4.00% |
| SLR | 3.00% | 3.00% |
| Well-capitalized minimum CET1 ratio | 6.50% | 6.50% |
| Well-capitalized minimum Tier 1 capital ratio | 8.0 | 8.0 |
| Well-capitalized minimum total capital ratio | 10.0 | 10.0 |
| Well-capitalized minimum Tier 1 leverage ratio | 5.0 | 5.0 |
| Well-capitalized minimum SLR | 6.00% | 6.00% |