Loans - Credit Card Loans, by Portfolio, by Delinquency (Details 10a) (USD $) In Millions, unless otherwise specified	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2010
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	$ 692,944	$ 685,498	$ 687,049
Credit Card
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	127,041	135,524
Retained Loans Percentage Equal Or Greater Than Thirty Days Past Due	2.90%	4.14%
Percentage Of Loans Ninety Plus Days Past Due To Total Retained Loans	1.43%	2.25%
Credit Card | Current and less than 30 days past due and still accruing [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	123,359	129,918
Credit Card | Current and less than 30 days past due and still accruing [Member] | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	112,636	117,248
Credit Card | Current and less than 30 days past due and still accruing [Member] | Washington Mutual Credit Card Portfolio [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	10,723	12,670
Credit Card | Days Past Due 30 To 89 And Still Accruing Member
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	1,862	2,551
Credit Card | Days Past Due 30 To 89 And Still Accruing Member | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	1,547	2,092
Credit Card | Days Past Due 30 To 89 And Still Accruing Member | Washington Mutual Credit Card Portfolio [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	315	459
Credit Card | Past Due And Still Accruing 90 Days Or More Member
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	1,818	3,053
Credit Card | Past Due And Still Accruing 90 Days Or More Member | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	1,487	2,449
Credit Card | Past Due And Still Accruing 90 Days Or More Member | Washington Mutual Credit Card Portfolio [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	331	604
Credit Card | Nonaccrual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Loans and Leases Receivable, Impaired, Nonperforming, Nonaccrual of Interest	2	2
Credit Card | Nonaccrual [Member] | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Loans and Leases Receivable, Impaired, Nonperforming, Nonaccrual of Interest	2	2
Credit Card | Nonaccrual [Member] | Washington Mutual Credit Card Portfolio [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Loans and Leases Receivable, Impaired, Nonperforming, Nonaccrual of Interest	0	0
Credit Card | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	115,672	121,791
Retained Loans Percentage Equal Or Greater Than Thirty Days Past Due	2.62%	3.73%
Percentage Of Loans Ninety Plus Days Past Due To Total Retained Loans	1.29%	2.01%
Credit Card | Washington Mutual Credit Card Portfolio [Member]
Credit Card Loans, by Class, by Delinquency [Line Items]
Retained loans	$ 11,369	$ 13,733
Retained Loans Percentage Equal Or Greater Than Thirty Days Past Due	5.68%	7.74%
Percentage Of Loans Ninety Plus Days Past Due To Total Retained Loans	2.91%	4.40%