Cover Page - shares	9 Months Ended
	Sep. 30, 2020	Oct. 16, 2020
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Period End Date	Sep. 30, 2020
Entity Central Index Key	0000886982
Document Fiscal Period Focus	Q3
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Registrant Name	GOLDMAN SACHS GROUP INC
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		344,067,789
Entity File Number	001-14965
Entity Tax Identification Number	13-4019460
Entity Current Reporting Status	Yes
Entity Address, Address Line One	200 West Street
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10282
City Area Code	212
Local Phone Number	902-1000
Entity Incorporation, State or Country Code	DE
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common stock, par value $.01 per share
Trading Symbol	GS
Security Exchange Name	NYSE
Series A Floating Rate Preferred Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, Each Representing 1/1,000th Interest in a Share
Trading Symbol	GS PrA
Security Exchange Name	NYSE
Series C Floating Rate Preferred Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, Each Representing 1/1,000th Interest in a Share
Trading Symbol	GS PrC
Security Exchange Name	NYSE
Series D Floating Rate Preferred Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, Each Representing 1/1,000th Interest in a Share
Trading Symbol	GS PrD
Security Exchange Name	NYSE
Series J 5.50% Fixed-to-Floating Rate Preferred Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, Each Representing 1/1,000th Interest in a Share
Trading Symbol	GS PrJ
Security Exchange Name	NYSE
Series K 6.375% Fixed-to-Floating Rate Preferred Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, Each Representing 1/1,000th Interest in a Share
Trading Symbol	GS PrK
Security Exchange Name	NYSE
Series N 6.30% Preferred Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, Each Representing 1/1,000th Interest in a Share
Trading Symbol	GS PrN
Security Exchange Name	NYSE
5.793% Fixed-to-Floating Rate Normal APEX [Member]
Document Information [Line Items]
Title of 12(b) Security	Normal Automatic Preferred Enhanced Capital Securities of Goldman Sachs Capital II
Trading Symbol	GS/43PE
Security Exchange Name	NYSE
Floating Rate Normal APEX [Member]
Document Information [Line Items]
Title of 12(b) Security	Normal Automatic Preferred Enhanced Capital Securities of Goldman Sachs Capital III
Trading Symbol	GS/43PF
Security Exchange Name	NYSE
Series E Medium Term Notes Callable Fixed Rate Notes due 2021 of GS Finance Corp. [Member]
Document Information [Line Items]
Title of 12(b) Security	Medium-Term Notes
Trading Symbol	GS/21F
Security Exchange Name	NYSE
Series E Medium Term Notes Index-Linked Notes due 2028 of GS Finance Corp. [Member]
Document Information [Line Items]
Title of 12(b) Security	Medium-Term Notes
Trading Symbol	FRLG
Security Exchange Name	NYSEArca