Loans - Financial Effects of Modifications and Redefaults (Details 4c) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2011	Dec. 31, 2010
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Average term extension granted on new TDRs	1.5	3.4
Weighted-average remaining term (in years) of all loans modified - after TDR	0.7	2.1
Loans that redefaulted within one year of modification	$ 5	$ 88
Consumer Portfolio Segment | Residential real estate, excluding PCI [Member]
Financing Receivable, Modifications [Line Items]
Weighted-average interest rate of loans with interest rate reductions - before TDR	6.32%	6.44%
Weighted-average interest rate of loans with interest rate reductions - after TDR	3.56%	3.20%
Weighted-average remaining term (in years) of loans with term or payment extensions - before TDR	24	24
Weighted-average remaining term (in years) of loans with term or payment extensions - after TDR	35	35
Charge-offs recognized upon modification	48	164
Principal deferred	92	189
Principal forgiven	33	91
Number of loans that redefaulted within one year of modification	1,174	3,436
Loans that redefaulted within one year of modification	168	544
Consumer Portfolio Segment | Home Equity Senior Lien [Member]
Financing Receivable, Modifications [Line Items]
Weighted-average interest rate of loans with interest rate reductions - before TDR	7.39%	7.35%
Weighted-average interest rate of loans with interest rate reductions - after TDR	3.88%	3.67%
Weighted-average remaining term (in years) of loans with term or payment extensions - before TDR	19	18
Weighted-average remaining term (in years) of loans with term or payment extensions - after TDR	31	31
Charge-offs recognized upon modification	1	1
Principal deferred	1	2
Principal forgiven	0	1
Number of loans that redefaulted within one year of modification	56	144
Loans that redefaulted within one year of modification	4	12
Weighted-average remaining estimated lives of loans modified in TDRs	6.6	6.6
Consumer Portfolio Segment | Home Equity Junior Lien [Member]
Financing Receivable, Modifications [Line Items]
Weighted-average interest rate of loans with interest rate reductions - before TDR	5.49%	5.48%
Weighted-average interest rate of loans with interest rate reductions - after TDR	1.55%	1.48%
Weighted-average remaining term (in years) of loans with term or payment extensions - before TDR	21	21
Weighted-average remaining term (in years) of loans with term or payment extensions - after TDR	34	35
Charge-offs recognized upon modification	32	106
Principal deferred	10	30
Principal forgiven	14	58
Number of loans that redefaulted within one year of modification	407	801
Loans that redefaulted within one year of modification	18	36
Weighted-average remaining estimated lives of loans modified in TDRs	6.1	6.1
Consumer Portfolio Segment | Prime Mortgages, including option ARMs [Member]
Financing Receivable, Modifications [Line Items]
Weighted-average interest rate of loans with interest rate reductions - before TDR	5.86%	5.99%
Weighted-average interest rate of loans with interest rate reductions - after TDR	3.88%	3.51%
Weighted-average remaining term (in years) of loans with term or payment extensions - before TDR	25	25
Weighted-average remaining term (in years) of loans with term or payment extensions - after TDR	36	35
Charge-offs recognized upon modification	10	44
Principal deferred	55	109
Principal forgiven	4	7
Number of loans that redefaulted within one year of modification	292	890
Loans that redefaulted within one year of modification	94	262
Weighted-average remaining estimated lives of loans modified in TDRs	8.7	8.7
Consumer Portfolio Segment | Subprime Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Weighted-average interest rate of loans with interest rate reductions - before TDR	8.25%	8.25%
Weighted-average interest rate of loans with interest rate reductions - after TDR	3.41%	3.49%
Weighted-average remaining term (in years) of loans with term or payment extensions - before TDR	23	23
Weighted-average remaining term (in years) of loans with term or payment extensions - after TDR	33	34
Charge-offs recognized upon modification	5	13
Principal deferred	26	48
Principal forgiven	15	25
Number of loans that redefaulted within one year of modification	419	1,601
Loans that redefaulted within one year of modification	52	234
Weighted-average remaining estimated lives of loans modified in TDRs	6.3	6.3
Consumer Portfolio Segment | Consumer Loans Auto Financing Receivable [Member]
Financing Receivable, Modifications [Line Items]
Weighted-average interest rate of loans with interest rate reductions - before TDR	12.50%	11.90%
Weighted-average interest rate of loans with interest rate reductions - after TDR	5.10%	5.50%
Consumer Portfolio Segment | Consumer business banking
Financing Receivable, Modifications [Line Items]
Weighted-average remaining term (in years) of all loans modified - before TDR	0.8	1.4
Weighted-average remaining term (in years) of all loans modified - after TDR	2.0	2.5
Weighted-average interest rate of loans with interest rate reductions - before TDR	7.50%	7.50%
Weighted-average interest rate of loans with interest rate reductions - after TDR	5.30%	5.50%
Loans that redefaulted within one year of modification	19	64
Credit Card Loan Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Weighted-average interest rate of loans with interest rate reductions - before TDR	15.89%	16.15%
Weighted-average interest rate of loans with interest rate reductions - after TDR	5.23%	5.22%
Loans that redefaulted within one year of modification	154	558
Rate of Default for Modified Loans, Estimated Weighted Average		36.22%	36.45%
Credit Card Loan Portfolio Segment [Member] | Chase Credit Card Portfolio Excluding Washington Mutual [Member]
Financing Receivable, Modifications [Line Items]
Weighted-average interest rate of loans with interest rate reductions - before TDR	14.79%	14.98%
Weighted-average interest rate of loans with interest rate reductions - after TDR	5.00%	4.98%
Loans that redefaulted within one year of modification	125	454
Credit Card Loan Portfolio Segment [Member] | Washington Mutual Credit Card Portfolio [Member]
Financing Receivable, Modifications [Line Items]
Weighted-average interest rate of loans with interest rate reductions - before TDR	21.20%	21.51%
Weighted-average interest rate of loans with interest rate reductions - after TDR	6.36%	6.33%
Loans that redefaulted within one year of modification	$ 29	$ 104