Document and Entity Information
| Document and Entity Information | Oct. 14, 2020 |
| Schedule of Capitalization, Equity [Line Items] | |
| Entity Registrant Name | GOLDMAN SACHS GROUP INC |
| Entity Address, State or Province | NY |
| Amendment Flag | false |
| Entity Central Index Key | 0000886982 |
| Document Type | 8-K |
| Document Period End Date | Oct. 14, 2020 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-14965 |
| Entity Tax Identification Number | 13-4019460 |
| Entity Address, Address Line One | 200 West Street |
| Entity Address, City or Town | NY |
| Entity Address, Postal Zip Code | 10282 |
| City Area Code | 212 |
| Local Phone Number | 902-1000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock [Member] | |
| Schedule of Capitalization, Equity [Line Items] | |
| Security 12b Title | Common stock, par value $.01 per share |
| Trading Symbol | GS |
| Security Exchange Name | NYSE |
| Depositary Shares, Each Representing 1/1,000th Interest in a Share of Floating Rate Non-Cumulative Preferred Stock, Series A [Member] | |
| Schedule of Capitalization, Equity [Line Items] | |
| Security 12b Title | Depositary Shares, Each Representing 1/1,000th Interest in a Share of Floating Rate Non-Cumulative Preferred Stock, Series A |
| Trading Symbol | GS PrA |
| Security Exchange Name | NYSE |
| Depositary Shares, Each Representing 1/1,000th Interest in a Share of Floating Rate Non-Cumulative Preferred Stock, Series C [Member] | |
| Schedule of Capitalization, Equity [Line Items] | |
| Security 12b Title | Depositary Shares, Each Representing 1/1,000th Interest in a Share of Floating Rate Non-Cumulative Preferred Stock, Series C |
| Trading Symbol | GS PrC |
| Security Exchange Name | NYSE |
| Depositary Shares, Each Representing 1/1,000th Interest in a Share of Floating Rate Non-Cumulative Preferred Stock, Series D [Member] | |
| Schedule of Capitalization, Equity [Line Items] | |
| Security 12b Title | Depositary Shares, Each Representing 1/1,000th Interest in a Share of Floating Rate Non-Cumulative Preferred Stock, Series D |
| Trading Symbol | GS PrD |
| Security Exchange Name | NYSE |
| Depositary Shares, Each Representing 1/1,000th Interest in a Share of 5.50% Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series J [Member] | |
| Schedule of Capitalization, Equity [Line Items] | |
| Security 12b Title | Depositary Shares, Each Representing 1/1,000th Interest in a Share of 5.50% Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series J |
| Trading Symbol | GS PrJ |
| Security Exchange Name | NYSE |
| Depositary Shares, Each Representing 1/1,000th Interest in a Share of 6.375% Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series K [Member] | |
| Schedule of Capitalization, Equity [Line Items] | |
| Security 12b Title | Depositary Shares, Each Representing 1/1,000th Interest in a Share of 6.375% Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series K |
| Trading Symbol | GS PrK |
| Security Exchange Name | NYSE |
| Depositary Shares, Each Representing 1/1,000th Interest in a Share of 6.30% Non-Cumulative Preferred Stock, Series N [Member] | |
| Schedule of Capitalization, Equity [Line Items] | |
| Security 12b Title | Depositary Shares, Each Representing 1/1,000th Interest in a Share of 6.30% Non-Cumulative Preferred Stock, Series N |
| Trading Symbol | GS PrN |
| Security Exchange Name | NYSE |
| 5.793% Fixed-to-Floating Rate Normal Automatic Preferred Enhanced Capital Securities of Goldman Sachs Capital II [Member] | |
| Schedule of Capitalization, Equity [Line Items] | |
| Security 12b Title | 5.793% Fixed-to-Floating Rate Normal Automatic Preferred Enhanced Capital Securities of Goldman Sachs Capital II |
| Trading Symbol | GS/43PE |
| Security Exchange Name | NYSE |
| Floating Rate Normal Automatic Preferred Enhanced Capital Securities of Goldman Sachs Capital III [Member] | |
| Schedule of Capitalization, Equity [Line Items] | |
| Security 12b Title | Floating Rate Normal Automatic Preferred Enhanced Capital Securities of Goldman Sachs Capital III |
| Trading Symbol | GS/43PF |
| Security Exchange Name | NYSE |
| Medium-Term Notes, Series E, Index-Linked Notes due 2028 of GS Finance Corp. [Member] | |
| Schedule of Capitalization, Equity [Line Items] | |
| Security 12b Title | Medium-Term Notes, Series E, Index-Linked Notes due 2028 of GS Finance Corp. |
| Trading Symbol | FRLG |
| Security Exchange Name | NYSE |