Loans - Consumer, Excluding Credit Card Loan Portfolio, Residential Real Estate, Excluding PCI Loans (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 804,293,000,000	$ 747,508,000,000	$ 735,304,000,000
Consumer, excluding credit card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 331,732,000,000	294,979,000,000	$ 288,379,000,000
Period past due, credit analysis factors, charge off criteria	90 days
Consumer, excluding credit card | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 201,097,000,000	$ 162,719,000,000
% of 30 days past due to total retained loans	1.55%	2.27%
Consumer, excluding credit card | Residential real estate | California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 52,342,000,000	$ 39,227,000,000
Consumer, excluding credit card | Residential real estate | New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	29,644,000,000	27,717,000,000
Consumer, excluding credit card | Residential real estate | Illinois
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	14,279,000,000	10,772,000,000
Consumer, excluding credit card | Residential real estate | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	10,892,000,000	8,044,000,000
Consumer, excluding credit card | Residential real estate | Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	9,336,000,000	8,522,000,000
Consumer, excluding credit card | Residential real estate | New Jersey
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	7,769,000,000	6,475,000,000
Consumer, excluding credit card | Residential real estate | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	5,257,000,000	4,241,000,000
Consumer, excluding credit card | Residential real estate | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	5,116,000,000	4,439,000,000
Consumer, excluding credit card | Residential real estate | Michigan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	3,219,000,000	2,908,000,000
Consumer, excluding credit card | Residential real estate | Ohio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	2,869,000,000	2,655,000,000
Consumer, excluding credit card | Residential real estate | All other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	60,374,000,000	47,719,000,000
Consumer, excluding credit card | Residential real estate | U.S. government-guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	11,048,000,000	12,110,000,000
Consumer, excluding credit card | Residential real estate | Current Estimated LTV Ratio Greater than 125% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	332,000,000	618,000,000
Consumer, excluding credit card | Residential real estate | Current Estimated LTV Ratio Greater than 125% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	158,000,000	302,000,000
Consumer, excluding credit card | Residential real estate | Current Estimated LTV Ratio Between 101% and 125% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	2,681,000,000	4,049,000,000
Consumer, excluding credit card | Residential real estate | Current Estimated LTV Ratio Between 101% and 125% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	1,063,000,000	1,630,000,000
Consumer, excluding credit card | Residential real estate | Current Estimated LTV Ratio Between 80% and 100% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	9,139,000,000	11,409,000,000
Consumer, excluding credit card | Residential real estate | Current Estimated LTV Ratio Between 80% and 100% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	2,914,000,000	3,802,000,000
Consumer, excluding credit card | Residential real estate | Current Estimated LTV Ratio Less than 80% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	161,657,000,000	116,469,000,000
Consumer, excluding credit card | Residential real estate | Current Estimated LTV Ratio Less than 80% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	12,105,000,000	12,330,000,000
Consumer, excluding credit card | Residential real estate | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	189,683,000,000	149,552,000,000
Consumer, excluding credit card | Residential real estate | Current | U.S. government-guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	2,700,000,000	2,600,000,000
Consumer, excluding credit card | Residential real estate | 30–149 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	4,604,000,000	5,388,000,000
Consumer, excluding credit card | Residential real estate | 30–149 days past due | U.S. government-guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 3,000,000,000	3,500,000,000
Consumer, excluding credit card | Residential real estate | 30–149 days past due | U.S. government-guaranteed | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Period past due, credit analysis factors, charge off criteria	30 days
Consumer, excluding credit card | Residential real estate | 30–149 days past due | U.S. government-guaranteed | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Period past due, credit analysis factors, charge off criteria	149 days
Consumer, excluding credit card | Residential real estate | 150 or more days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 6,810,000,000	7,779,000,000
Consumer, excluding credit card | Residential real estate | 150 or more days past due | U.S. government-guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 5,300,000,000	6,000,000,000
Consumer, excluding credit card | Residential real estate | 150 or more days past due | U.S. government-guaranteed | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Period past due, credit analysis factors, charge off criteria	150 days
Consumer, excluding credit card | Residential real estate | 90 or more days past due and government guaranteed(c) | U.S. government-guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 6,405,000,000	7,544,000,000
Consumer, excluding credit card | Residential real estate | Nonaccrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	4,931,000,000	5,754,000,000
Consumer, excluding credit card | Residential real estate | Nonaccrual loans | U.S. government-guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	3,800,000,000	4,200,000,000
Consumer, excluding credit card | Residential real estate | 90 or more days past due and still accruing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 0	$ 0
Consumer, excluding credit card | Residential real estate | 90 or more days past due and still accruing | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Period past due, credit analysis factors, charge off criteria	90 days	90 days
Consumer, excluding credit card | Home equity | Senior lien
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 15,156,000,000	$ 16,367,000,000
% of 30 days past due to total retained loans	3.86%	3.89%
Consumer, excluding credit card | Home equity | Senior lien | California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 2,090,000,000	$ 2,232,000,000
Consumer, excluding credit card | Home equity | Senior lien | New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	2,591,000,000	2,805,000,000
Consumer, excluding credit card | Home equity | Senior lien | Illinois
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	1,219,000,000	1,306,000,000
Consumer, excluding credit card | Home equity | Senior lien | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	1,624,000,000	1,845,000,000
Consumer, excluding credit card | Home equity | Senior lien | Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	828,000,000	861,000,000
Consumer, excluding credit card | Home equity | Senior lien | New Jersey
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	652,000,000	654,000,000
Consumer, excluding credit card | Home equity | Senior lien | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	455,000,000	506,000,000
Consumer, excluding credit card | Home equity | Senior lien | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	843,000,000	927,000,000
Consumer, excluding credit card | Home equity | Senior lien | Michigan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	683,000,000	736,000,000
Consumer, excluding credit card | Home equity | Senior lien | Ohio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	1,053,000,000	1,150,000,000
Consumer, excluding credit card | Home equity | Senior lien | All other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	3,118,000,000	3,345,000,000
Consumer, excluding credit card | Home equity | Senior lien | U.S. government-guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	0	0
Consumer, excluding credit card | Home equity | Senior lien | Current Estimated LTV Ratio Greater than 125% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	15,000,000	21,000,000
Consumer, excluding credit card | Home equity | Senior lien | Current Estimated LTV Ratio Greater than 125% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	7,000,000	10,000,000
Consumer, excluding credit card | Home equity | Senior lien | Current Estimated LTV Ratio Between 101% and 125% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	87,000,000	134,000,000
Consumer, excluding credit card | Home equity | Senior lien | Current Estimated LTV Ratio Between 101% and 125% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	50,000,000	69,000,000
Consumer, excluding credit card | Home equity | Senior lien | Current Estimated LTV Ratio Between 80% and 100% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	450,000,000	633,000,000
Consumer, excluding credit card | Home equity | Senior lien | Current Estimated LTV Ratio Between 80% and 100% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	172,000,000	226,000,000
Consumer, excluding credit card | Home equity | Senior lien | Current Estimated LTV Ratio Less than 80% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	12,331,000,000	13,048,000,000
Consumer, excluding credit card | Home equity | Senior lien | Current Estimated LTV Ratio Less than 80% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	2,044,000,000	2,226,000,000
Consumer, excluding credit card | Home equity | Senior lien | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	14,571,000,000	15,730,000,000
Consumer, excluding credit card | Home equity | Senior lien | 30–149 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	248,000,000	275,000,000
Consumer, excluding credit card | Home equity | Senior lien | 150 or more days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	337,000,000	362,000,000
Consumer, excluding credit card | Home equity | Senior lien | 90 or more days past due and government guaranteed(c) | U.S. government-guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	0	0
Consumer, excluding credit card | Home equity | Senior lien | Nonaccrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	883,000,000	938,000,000
Consumer, excluding credit card | Home equity | Junior lien
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 31,974,000,000	$ 36,375,000,000
% of 30 days past due to total retained loans	2.14%	2.20%
Consumer, excluding credit card | Home equity | Junior lien | California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 7,123,000,000	$ 8,144,000,000
Consumer, excluding credit card | Home equity | Junior lien | New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	6,819,000,000	7,685,000,000
Consumer, excluding credit card | Home equity | Junior lien | Illinois
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	2,321,000,000	2,605,000,000
Consumer, excluding credit card | Home equity | Junior lien | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	977,000,000	1,087,000,000
Consumer, excluding credit card | Home equity | Junior lien | Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	1,688,000,000	1,923,000,000
Consumer, excluding credit card | Home equity | Junior lien | New Jersey
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	2,009,000,000	2,233,000,000
Consumer, excluding credit card | Home equity | Junior lien | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	1,056,000,000	1,216,000,000
Consumer, excluding credit card | Home equity | Junior lien | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	1,396,000,000	1,595,000,000
Consumer, excluding credit card | Home equity | Junior lien | Michigan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	734,000,000	848,000,000
Consumer, excluding credit card | Home equity | Junior lien | Ohio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	670,000,000	778,000,000
Consumer, excluding credit card | Home equity | Junior lien | All other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	7,181,000,000	8,261,000,000
Consumer, excluding credit card | Home equity | Junior lien | U.S. government-guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	0	0
Consumer, excluding credit card | Home equity | Junior lien | Current Estimated LTV Ratio Greater than 125% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	252,000,000	467,000,000
Consumer, excluding credit card | Home equity | Junior lien | Current Estimated LTV Ratio Greater than 125% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	69,000,000	138,000,000
Consumer, excluding credit card | Home equity | Junior lien | Current Estimated LTV Ratio Between 101% and 125% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	2,124,000,000	3,149,000,000
Consumer, excluding credit card | Home equity | Junior lien | Current Estimated LTV Ratio Between 101% and 125% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	607,000,000	923,000,000
Consumer, excluding credit card | Home equity | Junior lien | Current Estimated LTV Ratio Between 80% and 100% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	5,014,000,000	6,481,000,000
Consumer, excluding credit card | Home equity | Junior lien | Current Estimated LTV Ratio Between 80% and 100% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	1,422,000,000	1,780,000,000
Consumer, excluding credit card | Home equity | Junior lien | Current Estimated LTV Ratio Less than 80% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	19,242,000,000	20,030,000,000
Consumer, excluding credit card | Home equity | Junior lien | Current Estimated LTV Ratio Less than 80% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	3,244,000,000	3,407,000,000
Consumer, excluding credit card | Home equity | Junior lien | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	31,289,000,000	35,575,000,000
Consumer, excluding credit card | Home equity | Junior lien | 30–149 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	447,000,000	533,000,000
Consumer, excluding credit card | Home equity | Junior lien | 150 or more days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	238,000,000	267,000,000
Consumer, excluding credit card | Home equity | Junior lien | 90 or more days past due and government guaranteed(c) | U.S. government-guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	0	0
Consumer, excluding credit card | Home equity | Junior lien | Nonaccrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	1,373,000,000	1,590,000,000
Consumer, excluding credit card | Mortgages | U.S. government-guaranteed | All other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	11,000,000,000	12,100,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 150,114,000,000	$ 104,921,000,000
% of 30 days past due to total retained loans	0.83%	1.42%
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 42,588,000,000	$ 28,133,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	19,695,000,000	16,550,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Illinois
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	10,588,000,000	6,654,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	8,143,000,000	4,935,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	6,388,000,000	5,106,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | New Jersey
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	4,930,000,000	3,361,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	3,662,000,000	2,410,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	2,800,000,000	1,805,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Michigan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	1,718,000,000	1,203,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Ohio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	1,061,000,000	615,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | All other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	48,541,000,000	34,149,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | U.S. government-guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	11,048,000,000	12,110,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Current Estimated LTV Ratio Greater than 125% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	62,000,000	120,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Current Estimated LTV Ratio Greater than 125% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	62,000,000	103,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Current Estimated LTV Ratio Between 101% and 125% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	434,000,000	648,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Current Estimated LTV Ratio Between 101% and 125% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	267,000,000	340,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Current Estimated LTV Ratio Between 80% and 100% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	3,497,000,000	3,863,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Current Estimated LTV Ratio Between 80% and 100% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	852,000,000	1,026,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Current Estimated LTV Ratio Less than 80% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	128,678,000,000	81,805,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Current Estimated LTV Ratio Less than 80% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	5,214,000,000	4,906,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	140,579,000,000	93,951,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | 30 or more days past due | U.S. government-guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	8,300,000,000	9,500,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | 30–149 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	3,513,000,000	4,091,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | 150 or more days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	6,022,000,000	6,879,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | 90 or more days past due and government guaranteed(c) | U.S. government-guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	6,405,000,000	7,544,000,000
Consumer, excluding credit card | Mortgages | Prime, including option ARMs | Nonaccrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	1,863,000,000	2,190,000,000
Consumer, excluding credit card | Mortgages | Subprime
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 3,853,000,000	$ 5,056,000,000
% of 30 days past due to total retained loans	15.81%	15.03%
Consumer, excluding credit card | Mortgages | Subprime | California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 541,000,000	$ 718,000,000
Consumer, excluding credit card | Mortgages | Subprime | New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	539,000,000	677,000,000
Consumer, excluding credit card | Mortgages | Subprime | Illinois
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	151,000,000	207,000,000
Consumer, excluding credit card | Mortgages | Subprime | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	148,000,000	177,000,000
Consumer, excluding credit card | Mortgages | Subprime | Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	432,000,000	632,000,000
Consumer, excluding credit card | Mortgages | Subprime | New Jersey
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	178,000,000	227,000,000
Consumer, excluding credit card | Mortgages | Subprime | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	84,000,000	109,000,000
Consumer, excluding credit card | Mortgages | Subprime | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	77,000,000	112,000,000
Consumer, excluding credit card | Mortgages | Subprime | Michigan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	84,000,000	121,000,000
Consumer, excluding credit card | Mortgages | Subprime | Ohio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	85,000,000	112,000,000
Consumer, excluding credit card | Mortgages | Subprime | All other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	1,534,000,000	1,964,000,000
Consumer, excluding credit card | Mortgages | Subprime | U.S. government-guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	0	0
Consumer, excluding credit card | Mortgages | Subprime | Current Estimated LTV Ratio Greater than 125% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	3,000,000	10,000,000
Consumer, excluding credit card | Mortgages | Subprime | Current Estimated LTV Ratio Greater than 125% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	20,000,000	51,000,000
Consumer, excluding credit card | Mortgages | Subprime | Current Estimated LTV Ratio Between 101% and 125% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	36,000,000	118,000,000
Consumer, excluding credit card | Mortgages | Subprime | Current Estimated LTV Ratio Between 101% and 125% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	139,000,000	298,000,000
Consumer, excluding credit card | Mortgages | Subprime | Current Estimated LTV Ratio Between 80% and 100% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	178,000,000	432,000,000
Consumer, excluding credit card | Mortgages | Subprime | Current Estimated LTV Ratio Between 80% and 100% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	468,000,000	770,000,000
Consumer, excluding credit card | Mortgages | Subprime | Current Estimated LTV Ratio Less than 80% | Refreshed FICO Scores Equal to or Greater than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	1,406,000,000	1,586,000,000
Consumer, excluding credit card | Mortgages | Subprime | Current Estimated LTV Ratio Less than 80% | Refreshed FICO Scores Less than 660
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	1,603,000,000	1,791,000,000
Consumer, excluding credit card | Mortgages | Subprime | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	3,244,000,000	4,296,000,000
Consumer, excluding credit card | Mortgages | Subprime | 30–149 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	396,000,000	489,000,000
Consumer, excluding credit card | Mortgages | Subprime | 150 or more days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	213,000,000	271,000,000
Consumer, excluding credit card | Mortgages | Subprime | 90 or more days past due and government guaranteed(c) | U.S. government-guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	0	0
Consumer, excluding credit card | Mortgages | Subprime | Nonaccrual loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 812,000,000	$ 1,036,000,000