Business Segments (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Business and Segment Description [Abstract]
Number of JPMorgan Chase & Co business segments	6		6
Approximate balance of current consumer credit card loans	$ 696,853,000,000		$ 696,853,000,000		$ 692,927,000,000
Segment results and reconciliation
Noninterest revenue	11,946,000,000	11,322,000,000	40,205,000,000	37,697,000,000
Provision for credit losses	2,411,000,000	3,223,000,000	5,390,000,000	13,596,000,000
Credit allocation income/(expense)	0	0	0	0
Noninterest expense	15,534,000,000	14,398,000,000	48,371,000,000	45,153,000,000
Income before income tax expense	5,818,000,000	6,203,000,000	22,002,000,000	17,847,000,000
Income tax expense/(benefit)	1,556,000,000	1,785,000,000	6,754,000,000	5,308,000,000
Average common equity	174,454,000,000	163,962,000,000	172,667,000,000	159,737,000,000
Average assets	2,230,547,000,000	2,041,113,000,000	2,176,309,000,000	2,041,156,000,000
Return on average common equity	9.00%	10.00%	11.00%	10.00%
Overhead ratio	65.00%	60.00%	64.00%	59.00%
Net interest income	11,817,000,000	12,502,000,000	35,558,000,000	38,899,000,000
Total net revenue	23,763,000,000	23,824,000,000	75,763,000,000	76,596,000,000
Net income	4,262,000,000	4,418,000,000	15,248,000,000	12,539,000,000
Segment Managed Results Tax Equivalent Adjustment
Noninterest revenue	472,000,000	415,000,000	1,433,000,000	1,242,000,000
Net interest income	133,000,000	96,000,000	373,000,000	282,000,000
Income tax expense	605,000,000	511,000,000	1,806,000,000	1,524,000,000
Minimum [Member] | Card Services | Consumer Credit Card Financing Receivable [Member]
Business and Segment Description [Abstract]
Approximate balance of current consumer credit card loans	127,000,000,000		127,000,000,000
Investment Bank
Segment results and reconciliation
Noninterest revenue	4,293,000,000	3,462,000,000	15,702,000,000	14,085,000,000
Net interest income	2,076,000,000	1,891,000,000	6,214,000,000	5,919,000,000
Total net revenue	6,369,000,000	5,353,000,000	21,916,000,000	20,004,000,000
Provision for credit losses	54,000,000	(142,000,000)	(558,000,000)	(929,000,000)
Credit allocation income/(expense)	0	0	0	0
Noninterest expense	3,799,000,000	3,704,000,000	13,147,000,000	13,064,000,000
Income before income tax expense	2,516,000,000	1,791,000,000	9,327,000,000	7,869,000,000
Income tax expense/(benefit)	880,000,000	505,000,000	3,264,000,000	2,731,000,000
Net income/(loss)	1,636,000,000	1,286,000,000	6,063,000,000	5,138,000,000
Average common equity	40,000,000,000	40,000,000,000	40,000,000,000	40,000,000,000
Average assets	803,667,000,000	746,926,000,000	820,239,000,000	711,277,000,000
Return on average common equity	16.00%	13.00%	20.00%	17.00%
Overhead ratio	60.00%	69.00%	60.00%	65.00%
Retail Financial Services
Business and Segment Description [Abstract]
Number of business segment components	2		2
Approximate number of retail bank branches (third-largest nationally)	5,400		5,400
Approximate number of ATMs (second-largest nationally)	16,700		16,700
Approximate number of retail financial services branch salespeople assisting customers	32,100		32,100
Locations from New York and Florida to California, number of states with Retail Financial Services	23		23
Segment results and reconciliation
Noninterest revenue	3,473,000,000	2,534,000,000	7,968,000,000	7,784,000,000
Net interest income	4,062,000,000	4,280,000,000	12,175,000,000	12,964,000,000
Total net revenue	7,535,000,000	6,814,000,000	20,143,000,000	20,748,000,000
Provision for credit losses	1,027,000,000	1,397,000,000	3,220,000,000	6,501,000,000
Credit allocation income/(expense)	0	0	0	0
Noninterest expense	4,565,000,000	4,170,000,000	14,736,000,000	12,012,000,000
Income before income tax expense	1,943,000,000	1,247,000,000	2,187,000,000	2,235,000,000
Income tax expense/(benefit)	782,000,000	531,000,000	1,042,000,000	966,000,000
Net income/(loss)	1,161,000,000	716,000,000	1,145,000,000	1,269,000,000
Average common equity	25,000,000,000	24,600,000,000	25,000,000,000	24,600,000,000
Average assets	283,443,000,000	309,523,000,000	289,486,000,000	316,407,000,000
Return on average common equity	18.00%	12.00%	6.00%	7.00%
Overhead ratio	61.00%	61.00%	73.00%	58.00%
Card Services
Business and Segment Description [Abstract]
Approximate number of open credit card accounts	64,000,000		64,000,000
Approximate customer spending using Chase credit cards (excluding the commercial card portfolio)			250,000,000,000
Number of auto dealerships nationwide, where consumers can obtain loans	16,900		16,900
Number of schools and universities nationwide, where consumers can obtain loans	1,900		1,900
Segment results and reconciliation
Noninterest revenue	1,254,000,000	1,060,000,000	3,607,000,000	3,173,000,000
Net interest income	3,521,000,000	4,025,000,000	10,720,000,000	12,227,000,000
Total net revenue	4,775,000,000	5,085,000,000	14,327,000,000	15,400,000,000
Provision for credit losses	1,264,000,000	1,784,000,000	2,561,000,000	7,861,000,000
Credit allocation income/(expense)	0	0	0	0
Noninterest expense	2,115,000,000	1,792,000,000	6,020,000,000	5,311,000,000
Income before income tax expense	1,396,000,000	1,509,000,000	5,746,000,000	2,228,000,000
Income tax expense/(benefit)	547,000,000	583,000,000	2,253,000,000	904,000,000
Net income/(loss)	849,000,000	926,000,000	3,493,000,000	1,324,000,000
Average common equity	16,000,000,000	18,400,000,000	16,000,000,000	18,400,000,000
Average assets	199,974,000,000	207,474,000,000	200,803,000,000	215,653,000,000
Return on average common equity	21.00%	20.00%	29.00%	10.00%
Overhead ratio	44.00%	35.00%	42.00%	34.00%
Commercial Banking
Segment results and reconciliation
Noninterest revenue	524,000,000	547,000,000	1,624,000,000	1,593,000,000
Net interest income	1,064,000,000	980,000,000	3,107,000,000	2,836,000,000
Total net revenue	1,588,000,000	1,527,000,000	4,731,000,000	4,429,000,000
Provision for credit losses	67,000,000	166,000,000	168,000,000	145,000,000
Credit allocation income/(expense)	0	0	0	0
Noninterest expense	573,000,000	560,000,000	1,699,000,000	1,641,000,000
Income before income tax expense	948,000,000	801,000,000	2,864,000,000	2,643,000,000
Income tax expense/(benefit)	377,000,000	330,000,000	1,140,000,000	1,089,000,000
Net income/(loss)	571,000,000	471,000,000	1,724,000,000	1,554,000,000
Average common equity	8,000,000,000	8,000,000,000	8,000,000,000	8,000,000,000
Average assets	145,195,000,000	130,237,000,000	143,069,000,000	132,176,000,000
Return on average common equity	28.00%	23.00%	29.00%	26.00%
Overhead ratio	36.00%	37.00%	36.00%	37.00%
Treasury & Securities Services
Segment results and reconciliation
Noninterest revenue	1,107,000,000	1,172,000,000	3,427,000,000	3,545,000,000
Net interest income	801,000,000	659,000,000	2,253,000,000	1,923,000,000
Total net revenue	1,908,000,000	1,831,000,000	5,680,000,000	5,468,000,000
Provision for credit losses	(20,000,000)	(2,000,000)	(18,000,000)	(57,000,000)
Credit allocation income/(expense)	9,000,000	(31,000,000)	68,000,000	(91,000,000)
Noninterest expense	1,470,000,000	1,410,000,000	4,300,000,000	4,134,000,000
Income before income tax expense	467,000,000	392,000,000	1,466,000,000	1,300,000,000
Income tax expense/(benefit)	162,000,000	141,000,000	512,000,000	478,000,000
Net income/(loss)	305,000,000	251,000,000	954,000,000	822,000,000
Average common equity	7,000,000,000	6,500,000,000	7,000,000,000	6,500,000,000
Average assets	60,141,000,000	42,445,000,000	53,612,000,000	41,211,000,000
Return on average common equity	17.00%	15.00%	18.00%	17.00%
Overhead ratio	77.00%	77.00%	76.00%	76.00%
Asset Management [Member]
Segment results and reconciliation
Noninterest revenue	1,898,000,000	1,780,000,000	6,057,000,000	5,253,000,000
Net interest income	418,000,000	392,000,000	1,202,000,000	1,118,000,000
Total net revenue	2,316,000,000	2,172,000,000	7,259,000,000	6,371,000,000
Provision for credit losses	26,000,000	23,000,000	43,000,000	63,000,000
Credit allocation income/(expense)	0	0	0	0
Noninterest expense	1,796,000,000	1,488,000,000	5,250,000,000	4,335,000,000
Income before income tax expense	494,000,000	661,000,000	1,966,000,000	1,973,000,000
Income tax expense/(benefit)	109,000,000	241,000,000	676,000,000	770,000,000
Net income/(loss)	385,000,000	420,000,000	1,290,000,000	1,203,000,000
Average common equity	6,500,000,000	6,500,000,000	6,500,000,000	6,500,000,000
Average assets	78,669,000,000	64,911,000,000	73,967,000,000	63,629,000,000
Return on average common equity	24.00%	26.00%	27.00%	25.00%
Overhead ratio	78.00%	69.00%	72.00%	68.00%
Corporate/Private Equity
Segment results and reconciliation
Noninterest revenue	(140,000,000)	1,213,000,000	3,185,000,000	3,597,000,000
Net interest income	8,000,000	371,000,000	260,000,000	2,194,000,000
Total net revenue	(132,000,000)	1,584,000,000	3,445,000,000	5,791,000,000
Provision for credit losses	(7,000,000)	(3,000,000)	(26,000,000)	12,000,000
Credit allocation income/(expense)	0	0	0	0
Noninterest expense	1,216,000,000	1,274,000,000	3,219,000,000	4,656,000,000
Income before income tax expense	(1,341,000,000)	313,000,000	252,000,000	1,123,000,000
Income tax expense/(benefit)	(696,000,000)	(35,000,000)	(327,000,000)	(106,000,000)
Net income/(loss)	(645,000,000)	348,000,000	579,000,000	1,229,000,000
Average common equity	71,954,000,000	59,962,000,000	70,167,000,000	55,737,000,000
Average assets	659,458,000,000	539,597,000,000	595,133,000,000	560,803,000,000
Return on average common equity	0.00%	0.00%	0.00%	0.00%
Overhead ratio	0.00%	0.00%	0.00%	0.00%
Reconciling Items [Member]
Segment results and reconciliation
Noninterest revenue	(463,000,000)	(446,000,000)	(1,365,000,000)	(1,333,000,000)
Net interest income	(133,000,000)	(96,000,000)	(373,000,000)	(282,000,000)
Total net revenue	(596,000,000)	(542,000,000)	(1,738,000,000)	(1,615,000,000)
Provision for credit losses	0	0	0	0
Credit allocation income/(expense)	(9,000,000)	31,000,000	(68,000,000)	91,000,000
Noninterest expense	0	0	0	0
Income before income tax expense	(605,000,000)	(511,000,000)	(1,806,000,000)	(1,524,000,000)
Income tax expense/(benefit)	(605,000,000)	(511,000,000)	(1,806,000,000)	(1,524,000,000)
Net income/(loss)	0	0	0	0
Average common equity	$ 0	$ 0	$ 0	$ 0
Return on average common equity	0.00%	0.00%	0.00%	0.00%
Overhead ratio	0.00%	0.00%	0.00%	0.00%