Regulatory Capital (Details) (USD $)	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Regulatory capital
Tier 1 capital	$ 165,663,000,000		$ 160,002,000,000
Total capital	199,286,000,000		194,036,000,000
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%
Regulatory capital, assets and risk based ratios - supplemental information [Abstract]
Trust preferred capital debt securities	5,445,000,000		10,400,000,000
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
Adjustments to Capital for Deferred Tax Liabilities Resulting from Nontaxable Business Combinations	192,000,000		291,000,000
Adjustments to Capital for Deferred Tax Liabilities Resulting from Tax-deductible Goodwill	2,800,000,000		2,500,000,000
Possibility One [Member]
Capital ratios
Tier 1 leverage - Minimum capital ratio	3.00%
Possibility Two [Member]
Capital ratios
Tier 1 leverage - Minimum capital ratio	4.00%
JPMorgan Chase & Co. [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Impact to Risk-weighted Assets Upon Implementation of Basel 2.5 Final Market Risk Rule		150,000,000,000
Impact to Tier 1 Capital Ratio Upon Implementation of Basel 2.5 Final Market Risk Rule		(1.40%)
Impact to Total Capital Ratio Upon Implementation of Basel 2.5 Final Market Risk Rule		(1.60%)
Regulatory capital
Tier 1 capital	165,663,000,000		160,002,000,000
Total capital	199,286,000,000		194,036,000,000
Assets
Risk-weighted assets	1,387,863,000,000		1,270,378,000,000
Adjusted average assets	2,343,713,000,000		2,243,242,000,000
Capital ratios
Tier 1 capital	11.90%		12.60%
Total capital	14.40%		15.30%
Tier 1 leverage	7.10%		7.10%
Regulatory capital, assets and risk based ratios - supplemental information [Abstract]
Trust preferred capital debt securities	5,300,000,000
Tier 1 capital, excluding trust preferred capital debt securities	160,400,000,000
Tier 1 capital ratio, excluding trust preferred capital debt securities	11.60%
Risk-weighted assets, off-balance sheet	315,900,000,000		304,500,000,000
JPMorgan Chase Bank, N.A.
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Impact to Risk-weighted Assets Upon Implementation of Basel 2.5 Final Market Risk Rule		140,000,000,000
Impact to Tier 1 Capital Ratio Upon Implementation of Basel 2.5 Final Market Risk Rule		(1.30%)
Impact to Total Capital Ratio Upon Implementation of Basel 2.5 Final Market Risk Rule		(1.50%)
Regulatory capital
Tier 1 capital	139,727,000,000		111,827,000,000
Total capital	165,496,000,000		146,870,000,000
Assets
Risk-weighted assets	1,171,574,000,000		1,094,155,000,000
Adjusted average assets	1,900,770,000,000		1,815,816,000,000
Capital ratios
Tier 1 capital	11.90%		10.20%
Total capital	14.10%		13.40%
Tier 1 leverage	7.40%		6.20%
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	139,100,000,000
Tier 1 capital ratio, excluding trust preferred capital debt securities	11.90%
Risk-weighted assets, off-balance sheet	304,000,000,000		297,100,000,000
Chase Bank USA, N.A.
Regulatory capital
Tier 1 capital	12,956,000,000		9,648,000,000
Total capital	16,389,000,000		13,131,000,000
Assets
Risk-weighted assets	100,990,000,000		103,593,000,000
Adjusted average assets	109,731,000,000		103,688,000,000
Capital ratios
Tier 1 capital	12.80%		9.30%
Total capital	16.20%		12.70%
Tier 1 leverage	11.80%		9.30%
Regulatory capital, assets and risk based ratios - supplemental information [Abstract]
Trust preferred capital debt securities	0
Risk-weighted assets, off-balance sheet	$ 14,000,000		$ 16,000,000