Variable Interest Entities - Consolidated VIE Assets and Liabilities (Details) - USD ($) $ in Millions		Mar. 31, 2021		Dec. 31, 2020		Mar. 31, 2020
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		$ 544,052		$ 503,126
Loans		948,642		960,506		$ 1,003,089
Other	[1]	200,247		151,539
Total assets		3,689,336	[2]	3,384,757	[2]	$ 3,138,530
Beneficial interests in VIE assets		15,671		17,578
Total liabilities	[2]	3,408,622		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		1,994		1,934
Loans		33,509		37,619
Other		701		681
Total assets		36,204		40,234
Beneficial interests in VIE assets		15,671		17,578
Other		239		233
Total liabilities		15,910		17,811
Beneficial interests in VIE assets, long term		4,700		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		10,716		11,962
Other		133		148
Total assets		10,849		12,110
Beneficial interests in VIE assets		4,319		4,943
Other		2		3
Total liabilities		4,321		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		3		2
Loans		19,642		23,787
Other		187		188
Total assets		19,832		23,977
Beneficial interests in VIE assets		9,030		10,523
Other		34		33
Total liabilities		9,064		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		1,989		1,930
Loans		0		0
Other		4		2
Total assets		1,993		1,932
Beneficial interests in VIE assets		1,958		1,902
Other		0		0
Total liabilities		1,958		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		1,520		1,694
Other		102		94
Total assets		1,622		1,788
Beneficial interests in VIE assets		305		210
Other		102		108
Total liabilities		407		318
VIEs consolidated by the Firm | Other
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		2		2
Loans		1,631		176
Other		275		249
Total assets		1,908		427
Beneficial interests in VIE assets		59		0
Other		101		89
Total liabilities		160		$ 89
VIEs consolidated by the Firm | Other | Corporate & Investment Bank | Auto loans
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Total assets		$ 1,200

[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 March 31, 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)March 31, 2021December 31, 2020AssetsTrading assets$1,994 $1,934 Loans33,509 37,619 All other assets701 681 Total assets$36,204 $40,234 LiabilitiesBeneficial interests issued by consolidated VIEs$15,671 $17,578 All other liabilities239 233 Total liabilities$15,910 $17,811