Loans - Nature and Extent of Modfications (Details 4b) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2011
Consumer Portfolio Segment | Residential real estate, excluding PCI [Member]
Financing Receivable, Modifications [Line Items]
New modifications	$ 1,525	$ 3,650
Number of loans modified	7,552	21,118
Interest rate reduction	87.00%	73.00%
Term or payment extensions	88.00%	77.00%
Principal and/or interest deferred	20.00%	17.00%
Principal forgiveness	10.00%	11.00%
Other	35.00%	40.00%
Consumer Portfolio Segment | Home Equity Senior Lien [Member]
Financing Receivable, Modifications [Line Items]
New modifications	21	67
Number of loans modified	262	789
Interest rate reduction	77.00%	80.00%
Term or payment extensions	98.00%	88.00%
Principal and/or interest deferred	15.00%	8.00%
Principal forgiveness	10.00%	8.00%
Other	29.00%	37.00%
Consumer Portfolio Segment | Home Equity Junior Lien [Member]
Financing Receivable, Modifications [Line Items]
New modifications	117	410
Number of loans modified	2,555	7,811
Interest rate reduction	94.00%	95.00%
Term or payment extensions	85.00%	83.00%
Principal and/or interest deferred	22.00%	21.00%
Principal forgiveness	17.00%	22.00%
Other	8.00%	8.00%
Consumer Portfolio Segment | Prime Mortgages, including option ARMs [Member]
Financing Receivable, Modifications [Line Items]
New modifications	1,116	2,614
Number of loans modified	2,772	8,470
Interest rate reduction	89.00%	48.00%
Term or payment extensions	94.00%	71.00%
Principal and/or interest deferred	19.00%	13.00%
Principal forgiveness	2.00%	1.00%
Other	67.00%	74.00%
Consumer Portfolio Segment | Subprime Mortgage [Member]
Financing Receivable, Modifications [Line Items]
New modifications	271	559
Number of loans modified	1,963	4,048
Interest rate reduction	77.00%	80.00%
Term or payment extensions	83.00%	75.00%
Principal and/or interest deferred	19.00%	19.00%
Principal forgiveness	11.00%	9.00%
Other	26.00%	28.00%
Consumer Portfolio Segment | Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
New modifications	61	204
Consumer Portfolio Segment | Consumer Loans Auto Financing Receivable [Member]
Financing Receivable, Modifications [Line Items]
New modifications	13	38
Consumer Portfolio Segment | Consumer business banking
Financing Receivable, Modifications [Line Items]
New modifications	48	166
Credit Card Loan Portfolio Segment [Member] | Chase Credit Card Portfolio Excluding Washington Mutual [Member] | Short-Term Credit Card Loan Modification Programs [Member]
Financing Receivable, Modifications [Line Items]
New modifications	30	104
Credit Card Loan Portfolio Segment [Member] | Chase Credit Card Portfolio Excluding Washington Mutual [Member] | Long-Term Credit Card Loan Modification Programs [Member]
Financing Receivable, Modifications [Line Items]
New modifications	470	1,652
Credit Card Loan Portfolio Segment [Member] | Washington Mutual Credit Card Portfolio [Member] | Short-Term Credit Card Loan Modification Programs [Member]
Financing Receivable, Modifications [Line Items]
New modifications	6	20
Credit Card Loan Portfolio Segment [Member] | Washington Mutual Credit Card Portfolio [Member] | Long-Term Credit Card Loan Modification Programs [Member]
Financing Receivable, Modifications [Line Items]
New modifications	98	361
Credit Card Loan Portfolio Segment [Member] | Short-Term Credit Card Loan Modification Programs [Member]
Financing Receivable, Modifications [Line Items]
New modifications	36	124
Credit Card Loan Portfolio Segment [Member] | Long-Term Credit Card Loan Modification Programs [Member]
Financing Receivable, Modifications [Line Items]
New modifications	$ 568	$ 2,013