Regulatory Capital (Details) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Regulatory capital
Tier 1 capital	$ 155,352,000,000	$ 150,384,000,000
Total capital	193,476,000,000	188,088,000,000
Capital ratios
Tier 1 capital - Well capitalized ratio	6.00%
Tier 1 capital - Minimum capital ratio	4.00%
Total capital - Well-capitalized ratio	10.00%
Total capital - Minumum capital ratio	8.00%
Tier 1 leverage - Well-capitalized ratio	5.00%
Tier 1 leverage - Minimum capital ratio	3.00%
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
Minimum Tier One Leverage Ratio for Bank Holding Companies and Banks Possibility One	3.00%
Minimum Tier One Leverage Ratio for Bank Holding Companies and Banks Possibility Two	4.00%
Adjustments to Capital for Deferred Tax Liabilities Resulting from Nontaxable Business Combinations	378,000,000	414,000,000
Adjustments to Capital for Deferred Tax Liabilities Resulting from Tax-deductible Goodwill	2,300,000,000	2,300,000,000
JPMorgan Chase & Co.
Regulatory capital
Tier 1 capital	155,352,000,000	150,384,000,000
Total capital	193,476,000,000	188,088,000,000
Assets
Risk-weighted assets	1,300,185,000,000	1,221,198,000,000
Adjusted average assets	2,195,625,000,000	2,202,087,000,000
Capital ratios
Tier 1 capital	11.90%	12.30%
Total capital	14.90%	15.40%
Tier 1 leverage	7.10%	6.80%
Regulatory capital, assets and risk based ratios - supplemental information [Abstract]
Trust preferred capital debt securities	19,600,000,000
Tier 1 capital, excluding trust preferred capital debt securities	135,800,000,000
Tier 1 capital ratio, excluding trust preferred capital debt securities	10.40%
Off-balance Sheet Risk-weighted Assets	303,600,000,000	301,100,000,000
JPMorgan Chase Bank, N.A.
Regulatory capital
Tier 1 capital	100,387,000,000	98,426,000,000
Total capital	138,975,000,000	136,017,000,000
Assets
Risk-weighted assets	1,117,183,000,000	1,042,898,000,000
Adjusted average assets	1,776,303,000,000	1,789,194,000,000
Capital ratios
Tier 1 capital	9.00%	9.40%
Total capital	12.40%	13.00%
Tier 1 leverage	5.70%	5.50%
Regulatory capital, assets and risk based ratios - supplemental information [Abstract]
Trust preferred capital debt securities	600,000,000
Tier 1 capital, excluding trust preferred capital debt securities	99,800,000,000
Tier 1 capital ratio, excluding trust preferred capital debt securities	8.90%
Off-balance Sheet Risk-weighted Assets	292,300,000,000	291,000,000,000
Chase Bank USA, N.A.
Regulatory capital
Tier 1 capital	9,924,000,000	11,903,000,000
Total capital	13,397,000,000	15,448,000,000
Assets
Risk-weighted assets	102,261,000,000	107,421,000,000
Adjusted average assets	104,898,000,000	106,312,000,000
Capital ratios
Tier 1 capital	9.70%	11.10%
Total capital	13.10%	14.40%
Tier 1 leverage	9.50%	11.20%
Regulatory capital, assets and risk based ratios - supplemental information [Abstract]
Trust preferred capital debt securities	0
Off-balance Sheet Risk-weighted Assets	$ 17,000,000	$ 38,000,000