Legal Proceedings - Additional Information (Detail) $ in Millions, $ in Millions			9 Months Ended
	Oct. 22, 2020 USD ($)	Aug. 18, 2020 USD ($)	Sep. 30, 2020 USD ($) shares	Sep. 30, 2020 CAD ($) shares
Other Commitments [Line Items]
Estimated aggregate amount of reasonably possible losses for legal proceedings			$ 900
Mortgage Related Matters [Member]
Other Commitments [Line Items]
Face amount of securitizations claimed for repurchase			1,700
Valeant Pharmaceuticals International Securities Litigation [Member] | June 2013 Public Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering			$ 2,300
Number of shares underwritten by GS&Co. and GS Canada in connection with the offering | shares			5,334,897	5,334,897
Aggregate value underwritten by GS&Co. and GS Canada			$ 453
Valeant Pharmaceuticals International Securities Litigation [Member] | June 2013 Senior Notes Offering [Member]
Other Commitments [Line Items]
Aggregate principal amount of notes			3,200
Valeant Pharmaceuticals International Securities Litigation [Member] | November 2013 Senior Notes Offering [Member]
Other Commitments [Line Items]
Aggregate principal amount of notes			900
Valeant Pharmaceuticals International Securities Litigation [Member] | June 2013 and November 2013 Senior Notes Offerings [Member] | Non-US [Member]
Other Commitments [Line Items]
Approximate principal amount of notes sold by GS&Co. and GS Canada				$ 14.2
SunEdison Securities Litigation [Member] | Convertible Preferred Stock Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering			$ 650
Number of shares underwritten by GS&Co. in connection with the offering | shares			138,890	138,890
Aggregate value underwritten by GS&Co.			$ 139
Snap Inc. [Member] | March 2017 Initial Public Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering			$ 3,910
Number of shares underwritten by GS&Co. in connection with the offering | shares			57,040,000	57,040,000
Aggregate value underwritten by GS&Co.			$ 970
1Malaysia Development Berhad (1MDB) [Member] | Offerings of Debt Securities [Member]
Other Commitments [Line Items]
Amount of debt securities cited in connection with investigations, reviews and litigation			6,500
The amount of criminal fines sought against the accused			2,700
1Malaysia Development Berhad (1MDB) [Member] | Offerings of Debt Securities [Member] | Fees Received [Member]
Other Commitments [Line Items]
The amount of criminal fines sought against the accused			600
1Malaysia Development Berhad (1MDB) [Member] | GS Offerings Of Debt Securities [Member]
Other Commitments [Line Items]
Agreement to make a payment related to legal and regulatory proceedings		$ 2,500
1Malaysia Development Berhad (1MDB) [Member] | Guarantee Obligations [Member]
Other Commitments [Line Items]
Agreement to make a payment related to legal and regulatory proceedings		2,500
Agreement to extend a guarantee related to legal and regulatory proceedings		$ 1,400
Disgorgement, value	$ 606
1Malaysia Development Berhad (1MDB) [Member] | Guarantee Obligations [Member] | Subsequent Event [Member]
Other Commitments [Line Items]
Payments for governmental and regulatory settlements	5,100
Payments for governmental legal and regulatory settlements	$ 2,600
Sea Limited [Member] | October 2017 Initial Public Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering			$ 989
American depository shares underwritten by GS Asia | shares			28,026,721	28,026,721
Aggregate value underwritten by GS Asia			$ 420
Altice USA Inc [Member] | June 2017 Initial Public Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering			$ 2,150
Number of shares underwritten by GS&Co. in connection with the offering | shares			12,280,042	12,280,042
Aggregate value underwritten by GS&Co.			$ 368
Camping World Holdings Inc Litigation [Member] | October 2016 Initial Public Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering			$ 261
Number of shares underwritten by GS&Co. in connection with the offering | shares			4,267,214	4,267,214
Aggregate value underwritten by GS&Co.			$ 94
Camping World Holdings Inc Litigation [Member] | May 2017 Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering			$ 303
Number of shares underwritten by GS&Co. in connection with the offering | shares			4,557,286	4,557,286
Aggregate value underwritten by GS&Co.			$ 126
Camping World Holdings Inc Litigation [Member] | October 2017 Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering			$ 310
Number of shares underwritten by GS&Co. in connection with the offering | shares			3,525,348	3,525,348
Aggregate value underwritten by GS&Co.			$ 143
Alnylam Pharmaceuticals Inc [Member]
Other Commitments [Line Items]
Aggregate value of offering			$ 805
Number of shares underwritten by GS&Co. in connection with the offering | shares			2,576,000	2,576,000
Aggregate value underwritten by GS&Co.			$ 322
Uber Technologies Inc [Member]
Other Commitments [Line Items]
Aggregate value of offering			$ 8,100
Number of shares underwritten by GS&Co. in connection with the offering | shares			35,864,408	35,864,408
Aggregate value underwritten by GS&Co.			$ 1,600
Venator Materials PLC Litigation [Member] | August 2017 Initial Public Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering			$ 522
Number of shares underwritten by GS&Co. in connection with the offering | shares			6,351,347	6,351,347
Aggregate value underwritten by GS&Co.			$ 127
Venator Materials PLC Litigation [Member] | December 2017 Secondary Equity Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering			$ 534
Number of shares underwritten by GS&Co. in connection with the offering | shares			5,625,768	5,625,768
Aggregate value underwritten by GS&Co.			$ 127
XP Inc Litigation [Member] | December 2019 Initial Public Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering			$ 2,300
Number of shares underwritten by GS&Co. in connection with the offering | shares			19,326,218	19,326,218
Aggregate value underwritten by GS&Co.			$ 522
GoHealth, Inc [Member] | July 2020 Initial Public Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering			$ 914
GoHealth, Inc [Member] | September 2020 Initial Public Offering [Member]
Other Commitments [Line Items]
Number of shares underwritten by GS&Co. in connection with the offering | shares			11,540,550	11,540,550
Aggregate value underwritten by GS&Co.			$ 242