Variable Interest Entities - Consolidated VIE Assets and Liabilities (Details) - USD ($) $ in Millions		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets	[1]	$ 503,126		$ 369,687
Loans		960,506		945,601		$ 969,415
Other	[1]	152,853		130,395
Total assets		3,386,071	[2]	2,687,379	[2]	$ 2,622,532
Beneficial interests in VIE assets		17,578		17,841
Total liabilities	[2]	3,106,717		2,426,049
VIEs consolidated by the Firm
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		1,934		2,633
Loans		37,619		42,931
Other		681		881
Total assets		40,234		46,445
Beneficial interests in VIE assets		17,578		17,841
Other		233		447
Total liabilities		17,811		18,288
Beneficial interests in VIE assets, long term		5,200		6,700
Firm-sponsored credit card trusts | VIEs consolidated by the Firm
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		0		0
Loans		11,962		14,986
Other		148		266
Total assets		12,110		15,252
Beneficial interests in VIE assets		4,943		6,461
Other		3		6
Total liabilities		4,946		6,467
Firm-administered multi-seller conduits | VIEs consolidated by the Firm
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		2		1
Loans		23,787		25,183
Other		188		355
Total assets		23,977		25,539
Beneficial interests in VIE assets		10,523		9,223
Other		33		36
Total liabilities		10,556		9,259
Municipal bond vehicles | VIEs consolidated by the Firm
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		1,930		1,903
Loans		0		0
Other		2		4
Total assets		1,932		1,907
Beneficial interests in VIE assets		1,902		1,881
Other		0		3
Total liabilities		1,902		1,884
Mortgage securitization entities | VIEs consolidated by the Firm
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		0		66
Loans		1,694		2,762
Other		94		64
Total assets		1,788		2,892
Beneficial interests in VIE assets		210		276
Other		108		130
Total liabilities		318		406
Other | VIEs consolidated by the Firm
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		2		663
Loans		176		0
Other		249		192
Total assets		427		855
Beneficial interests in VIE assets		0		0
Other		89		272
Total liabilities		$ 89		$ 272

[1] In the third quarter of 2020, the Firm reclassified certain fair value option elected lending-related positions from trading assets to loans and other assets. Prior-period amounts have been revised to conform with the current presentation.

[2] The following table presents information on assets and liabilities related to VIEs that are consolidated by the Firm at December 31, 2020 and 2019. The assets of the consolidated VIEs are used to settle the liabilities of those entities. The holders of the beneficial interests 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 14 for a further discussion. December 31, (in millions)20202019AssetsTrading assets$1,934 $2,633 Loans37,619 42,931 All other assets681 881 Total assets$40,234 $46,445 LiabilitiesBeneficial interests issued by consolidated VIEs$17,578 $17,841 All other liabilities233 447 Total liabilities$17,811 $18,288