Business Segments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Segment results and reconciliation
Noninterest revenue	$ 64,980		$ 58,154		$ 53,724
Net interest income	54,563		57,245		55,059
Total net revenue	119,543		115,399		108,783
Provision for credit losses	17,480		5,585		4,871
Noninterest expense	66,656		65,269		63,148
Income before income tax expense	35,407		44,545		40,764
Income tax expense/(benefit)	6,276		8,114		8,290
Net income	29,131		36,431		32,474
Average equity	236,865		232,907		229,222
Total assets	$ 3,386,071	[1]	$ 2,687,379	[1]	$ 2,622,532
Return on equity	12.00%		15.00%		13.00%
Overhead ratio	56.00%		57.00%		58.00%
Operating Segments | Consumer & Community Banking
Segment results and reconciliation
Noninterest revenue	$ 17,740		$ 17,796		$ 15,338
Net interest income	33,528		37,337		35,933
Total net revenue	51,268		55,133		51,271
Provision for credit losses	12,312		4,954		4,754
Noninterest expense	27,990		28,276		27,168
Income before income tax expense	10,966		21,903		19,349
Income tax expense/(benefit)	2,749		5,362		4,642
Net income	8,217		16,541		14,707
Average equity	52,000		52,000		51,000
Total assets	$ 496,705		$ 541,367		$ 560,177
Return on equity	15.00%		31.00%		28.00%
Overhead ratio	55.00%		51.00%		53.00%
Operating Segments | Corporate & Investment Bank
Segment results and reconciliation
Noninterest revenue	$ 35,120		$ 30,060		$ 27,854
Net interest income	14,164		9,205		9,528
Total net revenue	49,284		39,265		37,382
Provision for credit losses	2,726		277		(60)
Noninterest expense	23,538		22,444		21,876
Income before income tax expense	23,020		16,544		15,566
Income tax expense/(benefit)	5,926		4,590		3,767
Net income	17,094		11,954		11,799
Average equity	80,000		80,000		70,000
Total assets	$ 1,097,219		$ 914,705		$ 909,292
Return on equity	20.00%		14.00%		16.00%
Overhead ratio	48.00%		57.00%		59.00%
Operating Segments | Commercial Banking
Segment results and reconciliation
Noninterest revenue	$ 3,067		$ 2,710		$ 2,620
Net interest income	6,246		6,554		6,716
Total net revenue	9,313		9,264		9,336
Provision for credit losses	2,113		296		129
Noninterest expense	3,798		3,735		3,627
Income before income tax expense	3,402		5,233		5,580
Income tax expense/(benefit)	824		1,275		1,316
Net income	2,578		3,958		4,264
Average equity	22,000		22,000		20,000
Total assets	$ 228,932		$ 220,514		$ 220,229
Return on equity	11.00%		17.00%		20.00%
Overhead ratio	41.00%		40.00%		39.00%
Operating Segments | Asset & Wealth Management
Segment results and reconciliation
Noninterest revenue	$ 10,822		$ 10,236		$ 10,052
Net interest income	3,418		3,355		3,375
Total net revenue	14,240		13,591		13,427
Provision for credit losses	263		59		52
Noninterest expense	9,957		9,747		9,575
Income before income tax expense	4,020		3,785		3,800
Income tax expense/(benefit)	1,028		918		855
Net income	2,992		2,867		2,945
Average equity	10,500		10,500		9,000
Total assets	$ 203,384		$ 173,175		$ 161,047
Return on equity	28.00%		26.00%		32.00%
Overhead ratio	70.00%		72.00%		71.00%
Corporate
Segment results and reconciliation
Noninterest revenue	$ 1,199		$ (114)		$ (263)
Net interest income	(2,375)		1,325		135
Total net revenue	(1,176)		1,211		(128)
Provision for credit losses	66		(1)		(4)
Noninterest expense	1,373		1,067		902
Income before income tax expense	(2,615)		145		(1,026)
Income tax expense/(benefit)	(865)		(966)		215
Net income	(1,750)		1,111		(1,241)
Average equity	72,365		68,407		79,222
Total assets	1,359,831		837,618		771,787
Reconciling Items
Segment results and reconciliation
Noninterest revenue	(2,968)		(2,534)		(1,877)
Net interest income	(418)		(531)		(628)
Total net revenue	(3,386)		(3,065)		(2,505)
Provision for credit losses	0		0		0
Noninterest expense	0		0		0
Income before income tax expense	(3,386)		(3,065)		(2,505)
Income tax expense/(benefit)	(3,386)		(3,065)		(2,505)
Net income	0		0		0
Average equity	$ 0		$ 0		$ 0

[1] 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