Off-Balance Sheet Lending-Related Financial Instruments, Guarantees and Other Commitments - Loan Sales- and Securitization-Related Indemnifications (Details2) (USD $)	12 Months Ended				12 Months Ended									0 Months Ended	12 Months Ended	0 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013 Days Past Due, 60 or More [Member]	Dec. 31, 2013 Loans Sold With Recourse [Member]	Dec. 31, 2012 Loans Sold With Recourse [Member]	Dec. 31, 2013 Warranty Reserves [Member] Residential mortgage [Member]	Dec. 31, 2012 Warranty Reserves [Member] Residential mortgage [Member]	Dec. 31, 2011 Warranty Reserves [Member] Residential mortgage [Member]	Dec. 31, 2013 Repurchase Make-Whole Settlements [Member] Warranty Reserves [Member] Residential mortgage [Member]	Dec. 31, 2012 Repurchase Make-Whole Settlements [Member] Warranty Reserves [Member] Residential mortgage [Member]	Dec. 31, 2011 Repurchase Make-Whole Settlements [Member] Warranty Reserves [Member] Residential mortgage [Member]	Dec. 31, 2013 Reserves for New Mortgage Loans Sold During the Period [Member] Warranty Reserves [Member] Residential mortgage [Member]	Dec. 31, 2012 Reserves for New Mortgage Loans Sold During the Period [Member] Warranty Reserves [Member] Residential mortgage [Member]	Dec. 31, 2011 Reserves for New Mortgage Loans Sold During the Period [Member] Warranty Reserves [Member] Residential mortgage [Member]	Oct. 25, 2013 Mortgage Backed Securities Litigation and Regulatory Investigations [Member]	Dec. 31, 2013 Mortgage Backed Securities Litigation and Regulatory Investigations [Member]	Nov. 15, 2013 Mortgage Backed Securities Litigation Related to MBS Offerings Issued By JPMC and Bear Stearns [Member] trust	Nov. 15, 2013 Mortgage Backed Securities Litigation Related to MBS Offerings Sponsored By Washington Mutual [Member] investors	Dec. 31, 2013 Residential Real Estate [Member]
Summary of changes in mortgage repurchase liability
Repurchase liability at beginning of period					$ 2,811,000,000	$ 3,557,000,000	$ 3,285,000,000
Net realized losses					(1,561,000,000)	(1,158,000,000)	(1,263,000,000)	(414,000,000)	(524,000,000)	(640,000,000)
Reclassification to Litigation Reserve					(179,000,000)	0	0
Provision for repurchase losses					(390,000,000)	412,000,000	1,535,000,000
Repurchase liability at end of period					681,000,000	2,811,000,000	3,557,000,000
Amount to resolve Fannie Mae’s and Freddie Mac’s repurchase claims associated with whole loan purchases from 2000 to 2008														1,100,000,000
Valuation Allowances and Reserves, Provision											20,000,000	112,000,000	52,000,000
Litigation settlement, amount															9,000,000,000	4,500,000,000
Number of Institutional MBS Investors Directing or Threatening Litigation																	21
Number of MBS for Which Repurchase and Servicing Claims Have Been or Could Have Been Asserted																330
Amount of residential mortgage loans, private-label securitization by Washington Mutual	165,000,000,000
Amount of residential mortgage loans, private-label securitization by Washington Mutual, Repaid	75,000,000,000
Amount of residential mortgage loans, private-label securitization by Washington Mutual, Liquidated	47,000,000,000
Percent of residential mortgage loans originally sold or deposited into private-label securitization by Washington Mutual, Average Loss Severity	59.00%
Amount of residential mortgage loans, private-label securitization by Washington Mutual, Remaining	43,000,000,000	10,000,000,000
Period past due, credit analysis factors, charge off criteria																		60 days
Loans sold with recourse
Indemnification Agreements Loan Sale And Securitization Loans Sold With Recourse Contractual Amount			7,692,000,000	9,305,000,000
Indemnification Agreements, Loan Sale and Securitization, Loans Sold with Recourse: Carrying Value			$ 131,000,000	$ 141,000,000