Loans - Credit Card Loans, Impaired (Details 11) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Impaired Credit Card Loans
Credit card loans with modified payment terms	$ 5,561		6,075
Modified credit card loans that have reverted to original payment terms	963		1,139
Total impaired loans	6,524		7,214
Allowance for loan losses related to impaired loans	2,402		2,727
Credit Card
Financing Receivable, Impaired [Line Items]
Default Rate for Modified Credit Card Loans, Estimated Weighted Average	35.72%		35.47%
Average balance of impaired loans during the period:
Average impaired loans	6,845	9,494
Interest income on impaired loans	89	130
Credit Card | Noncompliance With Modified Terms [Member]
Impaired Credit Card Loans
Modified credit card loans that have reverted to original payment terms	646		762
Credit Card | Completion of Short Term Modification [Member]
Impaired Credit Card Loans
Modified credit card loans that have reverted to original payment terms	$ 317		377