Loans - Credit Quality Indicators and Other Information (Details) (USD $) In Millions, unless otherwise specified																					3 Months Ended								3 Months Ended																							3 Months Ended																																																																																3 Months Ended																		3 Months Ended				3 Months Ended																																										3 Months Ended		3 Months Ended																																																																																																																																																																																																																																															3 Months Ended																																																																																																																																																																																		3 Months Ended					3 Months Ended																																																																																																																																																										3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Mar. 31, 2013 Consumer, excluding credit card	Dec. 31, 2012 Consumer, excluding credit card	Mar. 31, 2012 Consumer, excluding credit card	Mar. 31, 2013 Consumer, excluding credit card Consumer Loan Excluding Credit Card	Dec. 31, 2012 Consumer, excluding credit card Consumer Loan Excluding Credit Card	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Days Past Due, 30 to 149 [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Days Past Due, 30 to 149 [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Days Past Due, 150 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Days Past Due, 150 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Nonaccrual [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Nonaccrual [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Mortgage Loans Insured or Guaranteed by US Government Agencies [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Mortgage Loans Insured or Guaranteed by US Government Agencies [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 30 to 149 [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 30 to 149 [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 90 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 90 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 150 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 150 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Nonaccrual [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Nonaccrual [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Consumer Credit Score [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Consumer Credit Score [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Regulatory Guidance Regarding Chapter 7 Loans [Member] Days Past Due 30 or More [Member] Maximum	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Arizona [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Arizona [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] California [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] California [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Florida [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Florida [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Illinois [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Illinois [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Michigan [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Michigan [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] New Jersey [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] New Jersey [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] New York [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] New York [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Ohio [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Ohio [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Texas [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Texas [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Washington [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] Washington [Member]	Mar. 31, 2013 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] All Other States [Member]	Dec. 31, 2012 Consumer, excluding credit card Residential Real Estate, Excluding Purchased Credit-Impaired [Member] All Other States [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Days Past Due, 30 to 149 [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Days Past Due, 30 to 149 [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Days Past Due, 150 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Days Past Due, 150 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Nonaccrual [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Nonaccrual [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Mortgage Loans Insured or Guaranteed by US Government Agencies [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Mortgage Loans Insured or Guaranteed by US Government Agencies [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 90 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 90 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Consumer Credit Score [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Consumer Credit Score [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Regulatory Guidance Regarding Chapter 7 Loans [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Arizona [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Arizona [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien California [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien California [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Florida [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Florida [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Illinois [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Illinois [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Michigan [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Michigan [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien New Jersey [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien New Jersey [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien New York [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien New York [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Ohio [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Ohio [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Texas [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Texas [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien Washington [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien Washington [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Senior Lien All Other States [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Senior Lien All Other States [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Days Past Due, 30 to 89 [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Days Past Due, 30 to 89 [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Days Past Due, 30 to 149 [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Days Past Due, 30 to 149 [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Days Past Due 90 to 149 [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Days Past Due 90 to 149 [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Days Past Due, 150 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Days Past Due, 150 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Nonaccrual [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Nonaccrual [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Mortgage Loans Insured or Guaranteed by US Government Agencies [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Mortgage Loans Insured or Guaranteed by US Government Agencies [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 30 to 149 [Member] Maximum	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 30 to 149 [Member] Minimum	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 90 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 90 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 150 or More [Member] Minimum	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Consumer Credit Score [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Consumer Credit Score [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Regulatory Guidance Regarding Chapter 7 Loans [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Arizona [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Arizona [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien California [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien California [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Florida [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Florida [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Illinois [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Illinois [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Michigan [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Michigan [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien New Jersey [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien New Jersey [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien New York [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien New York [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Ohio [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Ohio [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Texas [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Texas [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien Washington [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien Washington [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity - Junior Lien All Other States [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity - Junior Lien All Other States [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 30 to 89 [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 30 to 89 [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 30 to 89 [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 30 to 89 [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Days Past Due 90 to 149 [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Days Past Due 90 to 149 [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Days Past Due 90 to 149 [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Days Past Due 90 to 149 [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 150 or More [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 150 or More [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 150 or More [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 150 or More [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity Junior Lien, Excluding Lines of Credit [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity Junior Lien, Excluding Lines of Credit [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity Junior Lien, Excluding Lines of Credit [Member] Days Past Due, 30 to 89 [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity Junior Lien, Excluding Lines of Credit [Member] Days Past Due, 30 to 89 [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity Junior Lien, Excluding Lines of Credit [Member] Days Past Due 90 to 149 [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity Junior Lien, Excluding Lines of Credit [Member] Days Past Due 90 to 149 [Member]	Mar. 31, 2013 Consumer, excluding credit card Home Equity Junior Lien, Excluding Lines of Credit [Member] Days Past Due, 150 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Home Equity Junior Lien, Excluding Lines of Credit [Member] Days Past Due, 150 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Days Past Due, 30 to 149 [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Days Past Due, 30 to 149 [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Days Past Due, 150 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Days Past Due, 150 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Nonaccrual [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Nonaccrual [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Mortgage Loans Insured or Guaranteed by US Government Agencies [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Mortgage Loans Insured or Guaranteed by US Government Agencies [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due 30 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due 30 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 90 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 90 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Consumer Credit Score [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Consumer Credit Score [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Regulatory Guidance Regarding Chapter 7 Loans [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Arizona [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Arizona [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs California [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs California [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Florida [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Florida [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Illinois [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Illinois [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Michigan [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Michigan [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs New Jersey [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs New Jersey [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs New York [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs New York [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Ohio [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Ohio [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Texas [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Texas [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Washington [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs Washington [Member]	Mar. 31, 2013 Consumer, excluding credit card Prime Mortgages, Including Option ARMs All Other States [Member]	Dec. 31, 2012 Consumer, excluding credit card Prime Mortgages, Including Option ARMs All Other States [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Days Past Due, 30 to 149 [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Days Past Due, 30 to 149 [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Days Past Due, 150 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Days Past Due, 150 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Nonaccrual [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Nonaccrual [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Mortgage Loans Insured or Guaranteed by US Government Agencies [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Mortgage Loans Insured or Guaranteed by US Government Agencies [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 90 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Mortgage Loans Insured or Guaranteed by US Government Agencies [Member] Days Past Due, 90 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Consumer Credit Score [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Consumer Credit Score [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Regulatory Guidance Regarding Chapter 7 Loans [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Arizona [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Arizona [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages California [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages California [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Florida [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Florida [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Illinois [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Illinois [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Michigan [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Michigan [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages New Jersey [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages New Jersey [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages New York [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages New York [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Ohio [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Ohio [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Texas [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Texas [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages Washington [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages Washington [Member]	Mar. 31, 2013 Consumer, excluding credit card Subprime Mortgages All Other States [Member]	Dec. 31, 2012 Consumer, excluding credit card Subprime Mortgages All Other States [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Days Past Due, 30 to 149 [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Days Past Due, 30 to 149 [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Days Past Due, 150 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Days Past Due, 150 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Arizona [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Arizona [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] California [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] California [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Florida [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Florida [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Illinois [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Illinois [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Michigan [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Michigan [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] New Jersey [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] New Jersey [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] New York [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] New York [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Ohio [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Ohio [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Texas [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Texas [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] Washington [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] Washington [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired [Member] All Other States [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired [Member] All Other States [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Days Past Due, 30 to 149 [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Days Past Due, 30 to 149 [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Days Past Due, 150 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Days Past Due, 150 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Arizona [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Arizona [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] California [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] California [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Florida [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Florida [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Illinois [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Illinois [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Michigan [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Michigan [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] New Jersey [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] New Jersey [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] New York [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] New York [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Ohio [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Ohio [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Texas [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Texas [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] Washington [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] Washington [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Home Equity [Member] All Other States [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Home Equity [Member] All Other States [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Senior Lien [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien [Member] Days Past Due, 30 to 89 [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien [Member] Days Past Due, 30 to 89 [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien [Member] Days Past Due 90 to 149 [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien [Member] Days Past Due 90 to 149 [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien [Member] Days Past Due, 150 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien [Member] Days Past Due, 150 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 30 to 89 [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 30 to 89 [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 30 to 89 [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 30 to 89 [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Days Past Due 90 to 149 [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Days Past Due 90 to 149 [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Days Past Due 90 to 149 [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Days Past Due 90 to 149 [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 150 or More [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 150 or More [Member] Home Equity Line of Credit, Amortization Status, Revolving Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 150 or More [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Lines of Credit [Member] Days Past Due, 150 or More [Member] Home Equity Line of Credit, Amortization Status, Amortization Period [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Excluding Lines of Credit [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Excluding Lines of Credit [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Excluding Lines of Credit [Member] Days Past Due, 30 to 89 [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Excluding Lines of Credit [Member] Days Past Due, 30 to 89 [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Excluding Lines of Credit [Member] Days Past Due 90 to 149 [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Excluding Lines of Credit [Member] Days Past Due 90 to 149 [Member]	Mar. 31, 2013 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Excluding Lines of Credit [Member] Days Past Due, 150 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Purchased Credit-Impaired, Home Equity Junior Lien, Excluding Lines of Credit [Member] Days Past Due, 150 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Days Past Due, 30 to 149 [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Days Past Due, 30 to 149 [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Days Past Due, 150 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Days Past Due, 150 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Arizona [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Arizona [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] California [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] California [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Florida [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Florida [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Illinois [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Illinois [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Michigan [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Michigan [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] New Jersey [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] New Jersey [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] New York [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] New York [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Ohio [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Ohio [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Texas [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Texas [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] Washington [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] Washington [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Prime Mortgage [Member] All Other States [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Prime Mortgage [Member] All Other States [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Days Past Due, 30 to 149 [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Days Past Due, 30 to 149 [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Days Past Due, 150 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Days Past Due, 150 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Arizona [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Arizona [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] California [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] California [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Florida [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Florida [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Illinois [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Illinois [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Michigan [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Michigan [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] New Jersey [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] New Jersey [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] New York [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] New York [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Ohio [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Ohio [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Texas [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Texas [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] Washington [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] Washington [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Subprime Mortgage [Member] All Other States [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Subprime Mortgage [Member] All Other States [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Days Past Due, 30 to 149 [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Days Past Due, 30 to 149 [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Days Past Due, 150 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Days Past Due, 150 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Equal to or Greater than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Greater than 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 101 and 125 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Between 80 and 100 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Refreshed FICO Scores Less than 660 [Member] Current Estimated LTV Ratio Less than 80 Percent [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Arizona [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Arizona [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] California [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] California [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Florida [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Florida [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Illinois [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Illinois [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Michigan [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Michigan [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] New Jersey [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] New Jersey [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] New York [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] New York [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Ohio [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Ohio [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Texas [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Texas [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] Washington [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] Washington [Member]	Mar. 31, 2013 Consumer, excluding credit card PCI Option ARMs [Member] All Other States [Member]	Dec. 31, 2012 Consumer, excluding credit card PCI Option ARMs [Member] All Other States [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Days Past Due 30 to 119 [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Days Past Due 30 to 119 [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Days Past Due, 120 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Days Past Due, 120 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Nonaccrual [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Nonaccrual [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Student and Other Loans Insured or Guaranteed by U.S. Government Agencies [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Student and Other Loans Insured or Guaranteed by U.S. Government Agencies [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Student and Other Loans Insured or Guaranteed by U.S. Government Agencies [Member] Days Past Due 30 to 119 [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Student and Other Loans Insured or Guaranteed by U.S. Government Agencies [Member] Days Past Due 30 to 119 [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Student and Other Loans Insured or Guaranteed by U.S. Government Agencies [Member] Days Past Due 30 to 119 [Member] Maximum	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Student and Other Loans Insured or Guaranteed by U.S. Government Agencies [Member] Days Past Due 30 to 119 [Member] Minimum	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Student and Other Loans Insured or Guaranteed by U.S. Government Agencies [Member] Days Past Due, 30 or More, and Still Accruing [Member] Minimum	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Student and Other Loans Insured or Guaranteed by U.S. Government Agencies [Member] Days Past Due, 120 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Student and Other Loans Insured or Guaranteed by U.S. Government Agencies [Member] Days Past Due, 120 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Student and Other Loans Insured or Guaranteed by U.S. Government Agencies [Member] Days Past Due, 120 or More [Member] Minimum	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Noncriticized [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Noncriticized [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Criticized Performing [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Criticized Performing [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Criticized Nonaccrual [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Criticized Nonaccrual [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Arizona [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Arizona [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] California [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] California [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Florida [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Florida [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Illinois [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Illinois [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Michigan [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Michigan [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] New Jersey [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] New Jersey [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] New York [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] New York [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Ohio [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Ohio [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Texas [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Texas [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] Washington [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] Washington [Member]	Mar. 31, 2013 Consumer, excluding credit card Other Consumer [Member] All Other States [Member]	Dec. 31, 2012 Consumer, excluding credit card Other Consumer [Member] All Other States [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans	Dec. 31, 2012 Consumer, excluding credit card Auto Loans	Mar. 31, 2013 Consumer, excluding credit card Auto Loans Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans Days Past Due 30 to 119 [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans Days Past Due 30 to 119 [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans Days Past Due, 120 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans Days Past Due, 120 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans Nonaccrual [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans Nonaccrual [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans Noncriticized [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans Noncriticized [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans Criticized Performing [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans Criticized Performing [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans Criticized Nonaccrual [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans Criticized Nonaccrual [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans Arizona [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans Arizona [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans California [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans California [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans Florida [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans Florida [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans Illinois [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans Illinois [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans Michigan [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans Michigan [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans New Jersey [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans New Jersey [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans New York [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans New York [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans Ohio [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans Ohio [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans Texas [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans Texas [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans Washington [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans Washington [Member]	Mar. 31, 2013 Consumer, excluding credit card Auto Loans All Other States [Member]	Dec. 31, 2012 Consumer, excluding credit card Auto Loans All Other States [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans Days Past Due 30 to 119 [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans Days Past Due 30 to 119 [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans Days Past Due, 120 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans Days Past Due, 120 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans Nonaccrual [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans Nonaccrual [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans Noncriticized [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans Noncriticized [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans Criticized Performing [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans Criticized Performing [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans Criticized Nonaccrual [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans Criticized Nonaccrual [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans Arizona [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans Arizona [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans California [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans California [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans Florida [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans Florida [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans Illinois [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans Illinois [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans Michigan [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans Michigan [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans New Jersey [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans New Jersey [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans New York [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans New York [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans Ohio [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans Ohio [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans Texas [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans Texas [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans Washington [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans Washington [Member]	Mar. 31, 2013 Consumer, excluding credit card Business Banking Loans All Other States [Member]	Dec. 31, 2012 Consumer, excluding credit card Business Banking Loans All Other States [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans Days Past Due 30 to 119 [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans Days Past Due 30 to 119 [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans Days Past Due, 120 or More [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans Days Past Due, 120 or More [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans Nonaccrual [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans Nonaccrual [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans Student and Other Loans Insured or Guaranteed by U.S. Government Agencies [Member] Days Past Due, 30 or More, and Still Accruing [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans Student and Other Loans Insured or Guaranteed by U.S. Government Agencies [Member] Days Past Due, 30 or More, and Still Accruing [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans Arizona [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans Arizona [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans California [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans California [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans Florida [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans Florida [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans Illinois [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans Illinois [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans Michigan [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans Michigan [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans New Jersey [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans New Jersey [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans New York [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans New York [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans Ohio [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans Ohio [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans Texas [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans Texas [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans Washington [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans Washington [Member]	Mar. 31, 2013 Consumer, excluding credit card Student and Other Loans All Other States [Member]	Dec. 31, 2012 Consumer, excluding credit card Student and Other Loans All Other States [Member]	Mar. 31, 2013 Credit card	Dec. 31, 2012 Credit card	Mar. 31, 2012 Credit card	Mar. 31, 2013 Credit card Credit Card Loan	Dec. 31, 2012 Credit card Credit Card Loan	Mar. 31, 2013 Credit card Credit Card Loan Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Credit card Credit Card Loan Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Credit card Credit Card Loan Days Past Due, 30 to 89, and Still Accruing [Member]	Dec. 31, 2012 Credit card Credit Card Loan Days Past Due, 30 to 89, and Still Accruing [Member]	Mar. 31, 2013 Credit card Credit Card Loan Days Past Due 30 or More [Member]	Mar. 31, 2013 Credit card Credit Card Loan Days Past Due, 90 or More [Member]	Mar. 31, 2013 Credit card Credit Card Loan Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Credit card Credit Card Loan Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Credit card Credit Card Loan Nonaccrual [Member]	Dec. 31, 2012 Credit card Credit Card Loan Nonaccrual [Member]	Mar. 31, 2013 Credit card Credit Card Loan California [Member]	Dec. 31, 2012 Credit card Credit Card Loan California [Member]	Mar. 31, 2013 Credit card Credit Card Loan Florida [Member]	Dec. 31, 2012 Credit card Credit Card Loan Florida [Member]	Mar. 31, 2013 Credit card Credit Card Loan Illinois [Member]	Dec. 31, 2012 Credit card Credit Card Loan Illinois [Member]	Mar. 31, 2013 Credit card Credit Card Loan Michigan [Member]	Dec. 31, 2012 Credit card Credit Card Loan Michigan [Member]	Mar. 31, 2013 Credit card Credit Card Loan New Jersey [Member]	Dec. 31, 2012 Credit card Credit Card Loan New Jersey [Member]	Mar. 31, 2013 Credit card Credit Card Loan New York [Member]	Dec. 31, 2012 Credit card Credit Card Loan New York [Member]	Mar. 31, 2013 Credit card Credit Card Loan Ohio [Member]	Dec. 31, 2012 Credit card Credit Card Loan Ohio [Member]	Mar. 31, 2013 Credit card Credit Card Loan Pennsylvania [Member]	Dec. 31, 2012 Credit card Credit Card Loan Pennsylvania [Member]	Mar. 31, 2013 Credit card Credit Card Loan Texas [Member]	Dec. 31, 2012 Credit card Credit Card Loan Texas [Member]	Mar. 31, 2013 Credit card Credit Card Loan Virginia [Member]	Dec. 31, 2012 Credit card Credit Card Loan Virginia [Member]	Mar. 31, 2013 Credit card Credit Card Loan All Other States [Member]	Dec. 31, 2012 Credit card Credit Card Loan All Other States [Member]	Mar. 31, 2013 Wholesale	Dec. 31, 2012 Wholesale	Mar. 31, 2012 Wholesale	Mar. 31, 2013 Wholesale Wholesale Loan [Member]	Dec. 31, 2012 Wholesale Wholesale Loan [Member]	Mar. 31, 2013 Wholesale Wholesale Loan [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Wholesale Loan [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Wholesale Loan [Member] Days Past Due, 30 to 89, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Wholesale Loan [Member] Days Past Due, 30 to 89, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Wholesale Loan [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Wholesale Loan [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Wholesale Loan [Member] Nonaccrual [Member]	Dec. 31, 2012 Wholesale Wholesale Loan [Member] Nonaccrual [Member]	Mar. 31, 2013 Wholesale Wholesale Loan [Member] Corporate Credit Quality Indicator [Member]	Dec. 31, 2012 Wholesale Wholesale Loan [Member] Corporate Credit Quality Indicator [Member]	Mar. 31, 2013 Wholesale Wholesale Loan [Member] Investment Grade [Member]	Dec. 31, 2012 Wholesale Wholesale Loan [Member] Investment Grade [Member]	Mar. 31, 2013 Wholesale Wholesale Loan [Member] Noninvestment Grade [Member]	Dec. 31, 2012 Wholesale Wholesale Loan [Member] Noninvestment Grade [Member]	Mar. 31, 2013 Wholesale Wholesale Loan [Member] Noncriticized [Member]	Dec. 31, 2012 Wholesale Wholesale Loan [Member] Noncriticized [Member]	Mar. 31, 2013 Wholesale Wholesale Loan [Member] Criticized Performing [Member]	Dec. 31, 2012 Wholesale Wholesale Loan [Member] Criticized Performing [Member]	Mar. 31, 2013 Wholesale Wholesale Loan [Member] Criticized Nonaccrual [Member]	Dec. 31, 2012 Wholesale Wholesale Loan [Member] Criticized Nonaccrual [Member]	Mar. 31, 2013 Wholesale Wholesale Loan [Member] Total U.S. [Member]	Dec. 31, 2012 Wholesale Wholesale Loan [Member] Total U.S. [Member]	Mar. 31, 2013 Wholesale Wholesale Loan [Member] Total Non-U.S. [Member]	Dec. 31, 2012 Wholesale Wholesale Loan [Member] Total Non-U.S. [Member]	Mar. 31, 2013 Wholesale Commercial and Industrial [Member]	Dec. 31, 2012 Wholesale Commercial and Industrial [Member]	Mar. 31, 2013 Wholesale Commercial and Industrial [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Commercial and Industrial [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Commercial and Industrial [Member] Days Past Due, 30 to 89, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Commercial and Industrial [Member] Days Past Due, 30 to 89, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Commercial and Industrial [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Commercial and Industrial [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Commercial and Industrial [Member] Nonaccrual [Member]	Dec. 31, 2012 Wholesale Commercial and Industrial [Member] Nonaccrual [Member]	Mar. 31, 2013 Wholesale Commercial and Industrial [Member] Corporate Credit Quality Indicator [Member]	Dec. 31, 2012 Wholesale Commercial and Industrial [Member] Corporate Credit Quality Indicator [Member]	Mar. 31, 2013 Wholesale Commercial and Industrial [Member] Investment Grade [Member]	Dec. 31, 2012 Wholesale Commercial and Industrial [Member] Investment Grade [Member]	Mar. 31, 2013 Wholesale Commercial and Industrial [Member] Noninvestment Grade [Member]	Dec. 31, 2012 Wholesale Commercial and Industrial [Member] Noninvestment Grade [Member]	Mar. 31, 2013 Wholesale Commercial and Industrial [Member] Noncriticized [Member]	Dec. 31, 2012 Wholesale Commercial and Industrial [Member] Noncriticized [Member]	Mar. 31, 2013 Wholesale Commercial and Industrial [Member] Criticized Performing [Member]	Dec. 31, 2012 Wholesale Commercial and Industrial [Member] Criticized Performing [Member]	Mar. 31, 2013 Wholesale Commercial and Industrial [Member] Criticized Nonaccrual [Member]	Dec. 31, 2012 Wholesale Commercial and Industrial [Member] Criticized Nonaccrual [Member]	Mar. 31, 2013 Wholesale Commercial and Industrial [Member] Total U.S. [Member]	Dec. 31, 2012 Wholesale Commercial and Industrial [Member] Total U.S. [Member]	Mar. 31, 2013 Wholesale Commercial and Industrial [Member] Total Non-U.S. [Member]	Dec. 31, 2012 Wholesale Commercial and Industrial [Member] Total Non-U.S. [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate [Member] Days Past Due, 30 to 89, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate [Member] Days Past Due, 30 to 89, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate [Member] Nonaccrual [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate [Member] Nonaccrual [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate [Member] Corporate Credit Quality Indicator [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate [Member] Corporate Credit Quality Indicator [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate [Member] Investment Grade [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate [Member] Investment Grade [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate [Member] Noninvestment Grade [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate [Member] Noninvestment Grade [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate [Member] Noncriticized [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate [Member] Noncriticized [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate [Member] Criticized [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate [Member] Criticized [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate [Member] Criticized Performing [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate [Member] Criticized Performing [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate [Member] Criticized Nonaccrual [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate [Member] Criticized Nonaccrual [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate [Member] Total U.S. [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate [Member] Total U.S. [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate [Member] Total Non-U.S. [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate [Member] Total Non-U.S. [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate Multifamily [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate Multifamily [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate Multifamily [Member] Criticized [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate Multifamily [Member] Criticized [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate Multifamily [Member] Criticized Nonaccrual [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate Multifamily [Member] Criticized Nonaccrual [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate Commercial Lessors [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate Commercial Lessors [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate Commercial Lessors [Member] Criticized [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate Commercial Lessors [Member] Criticized [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate Commercial Lessors [Member] Criticized Nonaccrual [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate Commercial Lessors [Member] Criticized Nonaccrual [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate Commercial Construction and Development [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate Commercial Construction and Development [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate Commercial Construction and Development [Member] Criticized [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate Commercial Construction and Development [Member] Criticized [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate Commercial Construction and Development [Member] Criticized Nonaccrual [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate Commercial Construction and Development [Member] Criticized Nonaccrual [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate Other Loans [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate Other Loans [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate Other Loans [Member] Criticized [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate Other Loans [Member] Criticized [Member]	Mar. 31, 2013 Wholesale Wholesale Real Estate Other Loans [Member] Criticized Nonaccrual [Member]	Dec. 31, 2012 Wholesale Wholesale Real Estate Other Loans [Member] Criticized Nonaccrual [Member]	Mar. 31, 2013 Wholesale Financial Institutions [Member]	Dec. 31, 2012 Wholesale Financial Institutions [Member]	Mar. 31, 2013 Wholesale Financial Institutions [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Financial Institutions [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Financial Institutions [Member] Days Past Due, 30 to 89, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Financial Institutions [Member] Days Past Due, 30 to 89, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Financial Institutions [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Financial Institutions [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Financial Institutions [Member] Nonaccrual [Member]	Dec. 31, 2012 Wholesale Financial Institutions [Member] Nonaccrual [Member]	Mar. 31, 2013 Wholesale Financial Institutions [Member] Corporate Credit Quality Indicator [Member]	Dec. 31, 2012 Wholesale Financial Institutions [Member] Corporate Credit Quality Indicator [Member]	Mar. 31, 2013 Wholesale Financial Institutions [Member] Investment Grade [Member]	Dec. 31, 2012 Wholesale Financial Institutions [Member] Investment Grade [Member]	Mar. 31, 2013 Wholesale Financial Institutions [Member] Noninvestment Grade [Member]	Dec. 31, 2012 Wholesale Financial Institutions [Member] Noninvestment Grade [Member]	Mar. 31, 2013 Wholesale Financial Institutions [Member] Noncriticized [Member]	Dec. 31, 2012 Wholesale Financial Institutions [Member] Noncriticized [Member]	Mar. 31, 2013 Wholesale Financial Institutions [Member] Criticized Performing [Member]	Dec. 31, 2012 Wholesale Financial Institutions [Member] Criticized Performing [Member]	Mar. 31, 2013 Wholesale Financial Institutions [Member] Criticized Nonaccrual [Member]	Dec. 31, 2012 Wholesale Financial Institutions [Member] Criticized Nonaccrual [Member]	Mar. 31, 2013 Wholesale Financial Institutions [Member] Total U.S. [Member]	Dec. 31, 2012 Wholesale Financial Institutions [Member] Total U.S. [Member]	Mar. 31, 2013 Wholesale Financial Institutions [Member] Total Non-U.S. [Member]	Dec. 31, 2012 Wholesale Financial Institutions [Member] Total Non-U.S. [Member]	Mar. 31, 2013 Wholesale Government Agencies [Member]	Dec. 31, 2012 Wholesale Government Agencies [Member]	Mar. 31, 2013 Wholesale Government Agencies [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Government Agencies [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Government Agencies [Member] Days Past Due, 30 to 89, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Government Agencies [Member] Days Past Due, 30 to 89, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Government Agencies [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Government Agencies [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Government Agencies [Member] Nonaccrual [Member]	Dec. 31, 2012 Wholesale Government Agencies [Member] Nonaccrual [Member]	Mar. 31, 2013 Wholesale Government Agencies [Member] Corporate Credit Quality Indicator [Member]	Dec. 31, 2012 Wholesale Government Agencies [Member] Corporate Credit Quality Indicator [Member]	Mar. 31, 2013 Wholesale Government Agencies [Member] Investment Grade [Member]	Dec. 31, 2012 Wholesale Government Agencies [Member] Investment Grade [Member]	Mar. 31, 2013 Wholesale Government Agencies [Member] Noninvestment Grade [Member]	Dec. 31, 2012 Wholesale Government Agencies [Member] Noninvestment Grade [Member]	Mar. 31, 2013 Wholesale Government Agencies [Member] Noncriticized [Member]	Dec. 31, 2012 Wholesale Government Agencies [Member] Noncriticized [Member]	Mar. 31, 2013 Wholesale Government Agencies [Member] Criticized Performing [Member]	Dec. 31, 2012 Wholesale Government Agencies [Member] Criticized Performing [Member]	Mar. 31, 2013 Wholesale Government Agencies [Member] Criticized Nonaccrual [Member]	Dec. 31, 2012 Wholesale Government Agencies [Member] Criticized Nonaccrual [Member]	Mar. 31, 2013 Wholesale Government Agencies [Member] Total U.S. [Member]	Dec. 31, 2012 Wholesale Government Agencies [Member] Total U.S. [Member]	Mar. 31, 2013 Wholesale Government Agencies [Member] Total Non-U.S. [Member]	Dec. 31, 2012 Wholesale Government Agencies [Member] Total Non-U.S. [Member]	Mar. 31, 2013 Wholesale Wholesale Other [Member]	Dec. 31, 2012 Wholesale Wholesale Other [Member]	Mar. 31, 2013 Wholesale Wholesale Other [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Wholesale Other [Member] Current, and Less Than 30 Days Past Due, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Wholesale Other [Member] Days Past Due, 30 to 89, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Wholesale Other [Member] Days Past Due, 30 to 89, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Wholesale Other [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Dec. 31, 2012 Wholesale Wholesale Other [Member] Days Past Due, 90 or More, and Still Accruing [Member]	Mar. 31, 2013 Wholesale Wholesale Other [Member] Nonaccrual [Member]	Dec. 31, 2012 Wholesale Wholesale Other [Member] Nonaccrual [Member]	Mar. 31, 2013 Wholesale Wholesale Other [Member] Corporate Credit Quality Indicator [Member]	Dec. 31, 2012 Wholesale Wholesale Other [Member] Corporate Credit Quality Indicator [Member]	Mar. 31, 2013 Wholesale Wholesale Other [Member] Investment Grade [Member]	Dec. 31, 2012 Wholesale Wholesale Other [Member] Investment Grade [Member]	Mar. 31, 2013 Wholesale Wholesale Other [Member] Noninvestment Grade [Member]	Dec. 31, 2012 Wholesale Wholesale Other [Member] Noninvestment Grade [Member]	Mar. 31, 2013 Wholesale Wholesale Other [Member] Noncriticized [Member]	Dec. 31, 2012 Wholesale Wholesale Other [Member] Noncriticized [Member]	Mar. 31, 2013 Wholesale Wholesale Other [Member] Criticized Performing [Member]	Dec. 31, 2012 Wholesale Wholesale Other [Member] Criticized Performing [Member]	Mar. 31, 2013 Wholesale Wholesale Other [Member] Criticized Nonaccrual [Member]	Dec. 31, 2012 Wholesale Wholesale Other [Member] Criticized Nonaccrual [Member]	Mar. 31, 2013 Wholesale Wholesale Other [Member] Total U.S. [Member]	Dec. 31, 2012 Wholesale Wholesale Other [Member] Total U.S. [Member]	Mar. 31, 2013 Wholesale Wholesale Other [Member] Total Non-U.S. [Member]	Dec. 31, 2012 Wholesale Wholesale Other [Member] Total Non-U.S. [Member]
Financing Receivable, Recorded Investment, Credit Quality Indicator [Line Items]
Loans Receivable Held for Investment, Net of Deferred Income	$ 722,529	$ 726,835	$ 712,898	$ 290,082	$ 292,620	$ 304,770	$ 290,082	$ 292,620	$ 150,427	$ 151,896	$ 132,592	$ 133,605	$ 4,699	$ 5,254	$ 0	$ 0	$ 13,136	$ 13,037	$ 8,375	$ 8,460	$ 15,523	$ 15,602	$ 3,600	$ 3,800	$ 2,100	$ 2,300	$ 10,871	$ 10,625		$ 9,800	$ 9,500	$ 6,900	$ 6,800	$ 150,427	$ 151,896	$ 5,996	$ 7,567	$ 10,743	$ 11,734	$ 17,819	$ 18,902	$ 75,126	$ 72,314	$ 2,495	$ 3,075	$ 4,311	$ 4,523	$ 6,117	$ 6,227	$ 12,297	$ 11,952		$ 4,530	$ 4,661	$ 32,456	$ 32,534	$ 8,746	$ 8,867	$ 9,000	$ 8,945	$ 3,067	$ 3,148	$ 5,973	$ 6,020	$ 24,879	$ 24,871	$ 3,082	$ 3,201	$ 7,038	$ 7,195	$ 4,092	$ 4,198	$ 47,564	$ 48,256	$ 18,743	$ 19,385	$ 18,096	$ 18,688	$ 289	$ 330	$ 0	$ 0	$ 358	$ 367	$ 943	$ 931	$ 0	$ 0	$ 0	$ 0	$ 18,743	$ 19,385	$ 134	$ 197	$ 416	$ 491	$ 1,348	$ 1,502	$ 13,725	$ 13,988	$ 67	$ 93	$ 172	$ 191	$ 446	$ 485	$ 2,435	$ 2,438		$ 1,141	$ 1,183	$ 2,695	$ 2,786	$ 871	$ 892	$ 1,322	$ 1,358	$ 880	$ 910	$ 640	$ 652	$ 2,780	$ 2,847	$ 1,458	$ 1,514	$ 2,386	$ 2,508	$ 627	$ 651	$ 3,943	$ 4,084	$ 46,055	$ 48,000	$ 45,019	$ 46,805	$ 567	$ 687	$ 788	$ 960	$ 221	$ 273	$ 0	$ 0	$ 248	$ 235	$ 2,161	$ 2,277	$ 0	$ 0			$ 0	$ 0		$ 46,055	$ 48,000	$ 3,523	$ 4,561	$ 6,684	$ 7,089	$ 9,233	$ 9,604	$ 18,321	$ 18,252	$ 1,086	$ 1,338	$ 1,918	$ 1,971	$ 2,291	$ 2,279	$ 2,999	$ 2,906		$ 2,061	$ 2,151	$ 10,513	$ 10,969	$ 2,475	$ 2,572	$ 3,145	$ 3,265	$ 1,117	$ 1,169	$ 2,736	$ 2,838	$ 9,407	$ 9,753	$ 1,037	$ 1,091	$ 1,423	$ 1,503	$ 1,564	$ 1,629	$ 10,577	$ 11,060	$ 37,967	$ 40,794	$ 3,311	$ 2,127	$ 412	$ 514	$ 52	$ 48	$ 156	$ 196	$ 19	$ 19	$ 190	$ 185	$ 36	$ 27	$ 4,777	$ 5,079	$ 103	$ 125	$ 46	$ 58	$ 22	$ 23	$ 77,626	$ 76,256	$ 62,906	$ 61,439	$ 2,991	$ 3,237	$ 0	$ 0	$ 11,729	$ 11,580	$ 3,479	$ 3,445	$ 15,523	$ 15,602	$ 11,900	$ 11,800	$ 10,871	$ 10,625	$ 77,626	$ 76,256	$ 2,164	$ 2,573	$ 3,214	$ 3,697	$ 6,530	$ 7,070	$ 41,286	$ 38,281	$ 813	$ 991	$ 1,280	$ 1,376	$ 2,058	$ 2,117	$ 4,758	$ 4,549		$ 1,167	$ 1,162	$ 18,046	$ 17,539	$ 4,398	$ 4,372	$ 4,221	$ 3,999	$ 873	$ 866	$ 2,204	$ 2,131	$ 11,638	$ 11,190	$ 403	$ 405	$ 2,979	$ 2,927	$ 1,730	$ 1,741	$ 29,967	$ 29,924	$ 8,003	$ 8,255	$ 6,571	$ 6,673	$ 631	$ 727	$ 0	$ 0	$ 801	$ 855	$ 1,792	$ 1,807	$ 0	$ 0	$ 0	$ 0	$ 8,003	$ 8,255	$ 175	$ 236	$ 429	$ 457	$ 708	$ 726	$ 1,794	$ 1,793	$ 529	$ 653	$ 941	$ 985	$ 1,322	$ 1,346	$ 2,105	$ 2,059		$ 161	$ 165	$ 1,202	$ 1,240	$ 1,002	$ 1,031	$ 312	$ 323	$ 197	$ 203	$ 393	$ 399	$ 1,054	$ 1,081	$ 184	$ 191	$ 250	$ 257	$ 171	$ 177	$ 3,077	$ 3,188	$ 58,437	$ 59,737																																													$ 20,525	$ 20,971																																														$ 17,162	$ 17,666	$ 366	$ 428	$ 169	$ 206	$ 684	$ 655	$ 14,725	$ 15,915	$ 1,406	$ 666	$ 298	$ 361	$ 37	$ 30	$ 136	$ 175	$ 18	$ 13	$ 593	$ 591	$ 49	$ 20	$ 1,031	$ 1,085	$ 31	$ 37	$ 15	$ 18	$ 42	$ 44	$ 13,366	$ 13,674																																													$ 4,561	$ 4,626																																													$ 19,985	$ 20,466																																													$ 81,218	$ 80,987	$ 79,228	$ 78,810	$ 1,411	$ 1,588	$ 523	$ 525	$ 579	$ 589	$ 673	$ 714	$ 5,200	$ 5,400	$ 462	$ 466				$ 420	$ 428		$ 22,332	$ 22,218	$ 787	$ 843	$ 375	$ 390	$ 3,079	$ 3,123	$ 8,223	$ 8,053	$ 3,004	$ 3,005	$ 4,942	$ 4,890	$ 4,010	$ 4,007	$ 2,770	$ 2,709	$ 8,000	$ 7,925	$ 4,571	$ 4,675	$ 8,321	$ 8,379	$ 1,301	$ 1,313	$ 32,997	$ 32,908	$ 50,552	$ 49,913	$ 50,086	$ 49,290	$ 459	$ 616	$ 0	$ 0	$ 7	$ 7	$ 135	$ 163	$ 9,009	$ 8,882	$ 82	$ 130	$ 4	$ 4	$ 1,705	$ 1,719	$ 5,099	$ 4,962	$ 1,911	$ 1,922	$ 2,826	$ 2,738	$ 2,112	$ 2,091	$ 2,000	$ 1,921	$ 3,836	$ 3,742	$ 2,400	$ 2,462	$ 4,739	$ 4,739	$ 870	$ 824	$ 23,054	$ 22,793	$ 18,739	$ 18,883	$ 18,341	$ 18,482	$ 262	$ 263	$ 0	$ 0	$ 136	$ 138	$ 458	$ 481	$ 13,323	$ 13,336	$ 705	$ 713	$ 371	$ 386	$ 1,111	$ 1,139	$ 2,026	$ 1,983	$ 546	$ 527	$ 1,376	$ 1,404	$ 1,361	$ 1,368	$ 367	$ 379	$ 2,955	$ 2,981	$ 1,416	$ 1,443	$ 2,718	$ 2,749	$ 210	$ 202	$ 4,653	$ 4,708	$ 11,927	$ 12,191	$ 10,801	$ 11,038	$ 690	$ 709	$ 523	$ 525	$ 436	$ 444	$ 80	$ 70	$ 881	$ 894	$ 263	$ 265	$ 1,098	$ 1,108	$ 547	$ 556	$ 740	$ 748	$ 537	$ 548	$ 403	$ 409	$ 1,209	$ 1,202	$ 755	$ 770	$ 864	$ 891	$ 221	$ 287	$ 5,290	$ 5,407	$ 121,865	$ 127,993	$ 124,475	$ 121,865	$ 127,993	$ 119,503	$ 125,309	$ 1,183	$ 1,381			$ 1,178	$ 1,302	$ 1	$ 1	$ 16,386	$ 17,115	$ 6,919	$ 7,231	$ 7,041	$ 7,399	$ 3,537	$ 3,745	$ 5,203	$ 5,503	$ 9,920	$ 10,379	$ 4,677	$ 4,956	$ 4,301	$ 4,549	$ 9,872	$ 10,209	$ 2,997	$ 3,193	$ 51,012	$ 53,714	$ 310,582	$ 306,222	$ 283,653	$ 310,582	$ 306,222	$ 307,405	$ 302,692	$ 1,843	$ 1,958	$ 87	$ 138	$ 1,247	$ 1,434	$ 310,582	$ 306,222	$ 220,121	$ 214,446	$ 90,461	$ 91,776	$ 82,457	$ 83,248	$ 6,757	$ 7,094	$ 1,247	$ 1,434	$ 199,828	$ 201,866	$ 110,754	$ 104,356	$ 111,584	$ 109,865	$ 110,774	$ 109,019	$ 351	$ 119	$ 6	$ 19	$ 453	$ 708	$ 111,584	$ 109,865	$ 65,128	$ 61,870	$ 46,456	$ 47,995	$ 43,198	$ 44,651	$ 2,805	$ 2,636	$ 453	$ 708	$ 75,023	$ 74,371	$ 36,561	$ 35,494	$ 61,380	$ 60,740	$ 60,650	$ 59,829	$ 159	$ 322	$ 7	$ 69	$ 564	$ 520	$ 61,380	$ 60,740	$ 43,092	$ 41,796	$ 18,288	$ 18,944	$ 14,314	$ 14,567	$ 3,974	$ 4,377	$ 3,410	$ 3,857	$ 564	$ 520	$ 60,049	$ 59,207	$ 1,331	$ 1,533	$ 38,973	$ 38,030	$ 1,942	$ 2,118	$ 255	$ 249	$ 14,333	$ 14,668	$ 1,766	$ 1,951	$ 224	$ 207	$ 3,032	$ 2,989	$ 101	$ 119	$ 7	$ 21	$ 5,042	$ 5,053	$ 165	$ 189	$ 78	$ 43	$ 43,794	$ 36,227	$ 43,699	$ 36,151	$ 76	$ 62	$ 12	$ 6	$ 7	$ 8	$ 43,794	$ 36,227	$ 28,797	$ 22,064	$ 14,997	$ 14,163	$ 14,656	$ 13,760	$ 334	$ 395	$ 7	$ 8	$ 12,005	$ 9,901	$ 31,789	$ 26,326	$ 8,997	$ 9,544	$ 8,742	$ 9,516	$ 255	$ 28	$ 0	$ 0	$ 0	$ 0	$ 8,997	$ 9,544	$ 8,716	$ 9,183	$ 281	$ 361	$ 276	$ 356	$ 5	$ 5	$ 0	$ 0	$ 7,539	$ 7,962	$ 1,458	$ 1,582	$ 84,827	$ 89,846	$ 83,540	$ 88,177	$ 1,002	$ 1,427	$ 62	$ 44	$ 223	$ 198	$ 84,827	$ 89,846	$ 74,388	$ 79,533	$ 10,439	$ 10,313	$ 10,013	$ 9,914	$ 203	$ 201	$ 223	$ 198	$ 45,212	$ 50,425	$ 39,615	$ 39,421
Home Equity Line of Credit, Open-Ended Revolving Period																																																																																																																																																																																																				10 years																																																																																																																																																																																																																																																	10 years
Home Equity Line of Credit, Amortization Period																																																																																																																																																																																																						20 years
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses																																																																																																																																																																																																																																																																																																																																																5,711	5,711																																													1,908	1,908																																																																														1,929	1,929																																													380	380																																													1,494	1,494
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance																																																																																																																																																																																																																																																																																																																																																$ 63,378	$ 65,144	$ 51,175	$ 52,022	$ 3,228	$ 3,555	$ 8,975	$ 9,567	$ 6,159	$ 7,958	$ 10,580	$ 11,649	$ 10,646	$ 9,613	$ 7,872	$ 6,759	$ 6,340	$ 7,822	$ 8,028	$ 8,537	$ 7,259	$ 6,839	$ 6,494	$ 5,967	$ 1,005	$ 1,033	$ 33,759	$ 34,703	$ 6,004	$ 6,208	$ 1,799	$ 1,860	$ 661	$ 679	$ 1,899	$ 1,938	$ 3,957	$ 4,047	$ 280	$ 287	$ 991	$ 1,019	$ 2,163	$ 2,248	$ 10,860	$ 11,122	$ 21,743	$ 22,343	$ 19,860	$ 20,331	$ 674	$ 803	$ 1,209	$ 1,209	$ 3,611	$ 4,508	$ 4,787	$ 4,966	$ 3,814	$ 3,531	$ 2,875	$ 2,524	$ 1,933	$ 2,344	$ 2,089	$ 2,098	$ 1,445	$ 1,305	$ 1,189	$ 1,067	$ 395	$ 408	$ 13,131	$ 13,493	$ 2,005	$ 2,054	$ 488	$ 502	$ 68	$ 70	$ 413	$ 423	$ 1,045	$ 1,067	$ 26	$ 27	$ 372	$ 385	$ 1,180	$ 1,215	$ 2,620	$ 2,699																																		$ 13,491	$ 13,884	$ 10,860	$ 11,078	$ 715	$ 740	$ 1,916	$ 2,066	$ 1,044	$ 1,478	$ 2,551	$ 2,968	$ 2,393	$ 1,872	$ 1,534	$ 1,356	$ 1,130	$ 1,449	$ 1,853	$ 1,983	$ 1,498	$ 1,378	$ 1,488	$ 1,400	$ 209	$ 215	$ 7,648	$ 7,877	$ 988	$ 1,023	$ 416	$ 433	$ 207	$ 211	$ 395	$ 401	$ 909	$ 927	$ 69	$ 71	$ 143	$ 148	$ 313	$ 328	$ 2,194	$ 2,250	$ 6,180	$ 6,326	$ 4,210	$ 4,198	$ 639	$ 698	$ 1,331	$ 1,430	$ 315	$ 375	$ 433	$ 434	$ 440	$ 416	$ 304	$ 255	$ 1,106	$ 1,300	$ 1,233	$ 1,256	$ 1,201	$ 1,182	$ 1,148	$ 1,108	$ 102	$ 105	$ 1,409	$ 1,444	$ 631	$ 651	$ 328	$ 338	$ 160	$ 163	$ 255	$ 260	$ 642	$ 649	$ 98	$ 100	$ 361	$ 368	$ 134	$ 142	$ 2,060	$ 2,106	$ 21,964	$ 22,591	$ 16,245	$ 16,415	$ 1,200	$ 1,314	$ 4,519	$ 4,862	$ 1,189	$ 1,597	$ 2,809	$ 3,281	$ 3,999	$ 3,794	$ 3,159	$ 2,624	$ 2,171	$ 2,729	$ 2,853	$ 3,200	$ 3,115	$ 2,974	$ 2,669	$ 2,392	$ 299	$ 305	$ 11,571	$ 11,889	$ 2,380	$ 2,480	$ 567	$ 587	$ 226	$ 235	$ 836	$ 854	$ 1,361	$ 1,404	$ 87	$ 89	$ 115	$ 118	$ 536	$ 563	$ 3,986	$ 4,067
Period Past Due, Credit Analysis Factors, Charge off Criteria																													90 days																							30 days																																																																																180 days																		149 days	30 days			150 days
Loans, Charge-off Criteria, Period Past Due																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																							119 days	30 days	30 days			120 days																																																																																																																																																										30 days	90 days
Financing Receivable, Recorded Investment, Credit Quality Indicator, Ratios [Abstract]
Percentage of Loans Thirty Plus Days Past Due to Total Unpaid Principal Balance																																																																																																																																																																																																																																																																																																																																																19.25%	20.14%																																													8.66%	9.01%																																																																														19.50%	20.21%																																													31.88%	33.64%																																													26.04%	27.34%
Percentage of Loans Thirty Plus Days Past Due to Total Retained Loans									3.92%	4.28%																																																																	3.45%	3.60%																																	21.00%																							2.25%	2.49%																																								14.00%																							2.00%	2.19%	3.23%	4.42%													3.58%	4.06%							3.59%	3.97%																																			41.00%																							17.89%	19.16%																																	30.00%																																																																																																																				7.10%	7.30%							6.97%	7.08%	7.40%	9.46%													8.54%	9.12%																																																																																																																																																	1.37%	1.58%																																																	0.92%	1.25%																																							2.12%	2.12%																																							2.05%	2.12%																																						1.94%	2.10%
Percentage of Principal Balance Insured and Interest Guaranteed																					100.00%
Percentage of Criticized Loans to Total Retained Loans																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																					2.58%	2.78%																									2.92%	3.04%																									6.47%	7.21%																											4.98%	5.57%					12.32%	13.30%					3.33%	3.98%					3.27%	3.74%					0.78%	1.11%																									0.06%	0.05%																									0.50%	0.44%
Percentage of Loans on Nonaccrual Status to Total Retained Loans																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																					0.40%	0.47%																									0.41%	0.64%																									0.92%	0.86%																											0.65%	0.65%					1.56%	1.41%					0.23%	0.70%					1.55%	0.85%					0.02%	0.02%																									0.00%	0.00%																									0.26%	0.22%
Percentage of Loans Ninety Plus Days Past Due to Total Retained Loans																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																0.97%	1.02%
Percentage of Loans with FICO Scores of 660 Or Greater to Total Retained Loans																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																84.20%	84.10%
Percentage of Loans with FICO Scores Less than 660 to Total Retained Loans																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																15.80%	15.90%
Percentage of Senior Liens to Total Financing Receivables																																																																																																																																																																																																																																																																																																																																																																																																																																												21.00%