Loans - Credit Card Loans, by Portfolio, by Delinquency (Details 10a) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	$ 712,898	$ 718,997	$ 675,437
Credit Card
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	124,475	132,175
Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	124,475	132,175
Retained Loans Percentage Equal Or Greater Than Thirty Days Past Due	2.56%	2.81%
Percentage Of Loans Ninety Plus Days Past Due To Total Retained Loans	1.37%	1.44%
Retained Loans Percentage Fico Score Six Hundred Sixty Or Greater	81.50%	81.40%
Retained Loans Percentage Fico Score Less Than Six Hundred Sixty	18.50%	18.60%
Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member] | Current and less than 30 days past due and still accruing [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	121,282	128,464
Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member] | Days Past Due 30 To 89 And Still Accruing Member
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	1,491	1,808
Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member] | Past Due And Still Accruing 90 Days Or More Member
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	1,701	1,902
Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member] | Nonaccrual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Loans and Leases Receivable, Impaired, Nonperforming, Nonaccrual of Interest	1	1
California [Member] | Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	16,567	17,598
New York [Member] | Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	9,962	10,594
Florida [Member] | Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	7,182	7,583
Illinois [Member] | Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	7,115	7,548
Texas [Member] | Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	9,783	10,239
New Jersey [Member] | Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	5,222	5,604
Ohio [Member] | Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	4,852	5,202
Michigan [Member] | Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	3,720	3,994
All Other States [Member] | Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	52,542	55,736
Pennsylvania [Member] | Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	4,430	4,779
Virginia [Member] | Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	$ 3,100	$ 3,298