Variable Interest Entities - Consolidated VIE Assets and Liabilities (Details) - USD ($) $ in Millions		Sep. 30, 2021		Dec. 31, 2020		Sep. 30, 2020
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		$ 515,901		$ 503,126
Loans		974,260		960,506		$ 945,537
Other	[1]	175,104		151,539
Total assets		3,757,576	[2]	3,384,757	[2]	$ 3,245,061
Beneficial interests in VIE assets		13,257		17,578
Total liabilities	[2]	3,467,535		3,105,403
VIEs consolidated by the Firm
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		2,011		1,934
Loans		35,352		37,619
Other		516		681
Total assets		37,879		40,234
Beneficial interests in VIE assets		13,257		17,578
Other		234		233
Total liabilities		13,491		17,811
Beneficial interests in VIE assets, long term		2,700		5,200
VIEs consolidated by the Firm | Firm-sponsored credit card trusts
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		0		0
Loans		10,606		11,962
Other		97		148
Total assets		10,703		12,110
Beneficial interests in VIE assets		2,396		4,943
Other		1		3
Total liabilities		2,397		4,946
VIEs consolidated by the Firm | Firm-administered multi-seller conduits
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		2		2
Loans		21,077		23,787
Other		76		188
Total assets		21,155		23,977
Beneficial interests in VIE assets		8,612		10,523
Other		37		33
Total liabilities		8,649		10,556
VIEs consolidated by the Firm | Municipal bond vehicles
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		2,009		1,930
Loans		0		0
Other		4		2
Total assets		2,013		1,932
Beneficial interests in VIE assets		1,976		1,902
Other		0		0
Total liabilities		1,976		1,902
VIEs consolidated by the Firm | Mortgage securitization entities
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		0		0
Loans		1,091		1,694
Other		47		94
Total assets		1,138		1,788
Beneficial interests in VIE assets		216		210
Other		90		108
Total liabilities		306		318
VIEs consolidated by the Firm | Other
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		0		2
Loans		2,578		176
Other		292		249
Total assets		2,870		427
Beneficial interests in VIE assets		57		0
Other		106		89
Total liabilities		$ 163		$ 89

[1] Prior-period amounts have been revised to conform with the current presentation. Refer to Note 1 for further information.

[2] The following table presents information on assets and liabilities related to VIEs that are consolidated by the Firm at September 30, 2021, and December 31, 2020. The assets of the consolidated VIEs are used to settle the liabilities of those entities. The holders of the beneficial interests generally do not have recourse to the general credit of JPMorgan Chase. The assets and liabilities in the table below include third-party assets and liabilities of consolidated VIEs and exclude intercompany balances that eliminate in consolidation. Refer to Note 13 for a further discussion. (in millions)September 30, 2021December 31, 2020AssetsTrading assets$2,011 $1,934 Loans35,352 37,619 All other assets516 681 Total assets$37,879 $40,234 LiabilitiesBeneficial interests issued by consolidated VIEs$13,257 $17,578 All other liabilities234 233 Total liabilities$13,491 $17,811