Outstanding Loans and Leases - Home Loans Impaired Loans (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | |||||||||||||||||||||||||||||||||||||||||||
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Mar. 31, 2013
Home Loans [Member]
|
Mar. 31, 2012
Home Loans [Member]
|
Dec. 31, 2012
Home Loans [Member]
|
Mar. 31, 2013
Home Loans [Member]
Residential Mortgage [Member]
|
Mar. 31, 2012
Home Loans [Member]
Residential Mortgage [Member]
|
Dec. 31, 2012
Home Loans [Member]
Residential Mortgage [Member]
|
Mar. 31, 2013
Home Loans [Member]
Home Equity [Member]
|
Mar. 31, 2012
Home Loans [Member]
Home Equity [Member]
|
Dec. 31, 2012
Home Loans [Member]
Home Equity [Member]
|
Mar. 31, 2013
Additional Troubled Debt Restructurings Recognized [Member]
|
Dec. 31, 2012
Additional Troubled Debt Restructurings Recognized [Member]
|
Dec. 31, 2011
Additional Troubled Debt Restructurings Recognized [Member]
|
Mar. 31, 2013
Fully Insured Loans [Member]
|
Mar. 31, 2013
Fully Insured Loans [Member]
Home Loans [Member]
|
Mar. 31, 2013
Fully Insured Loans [Member]
Home Loans [Member]
Residential Mortgage [Member]
|
Mar. 31, 2013
Fully Insured Loans [Member]
Home Loans [Member]
Home Equity [Member]
|
Mar. 31, 2013
Fully Insured Loans [Member]
|
Mar. 31, 2013
Class of Financing Receivable [Member]
Home Loans [Member]
Residential Mortgage [Member]
|
Mar. 31, 2012
Class of Financing Receivable [Member]
Home Loans [Member]
Residential Mortgage [Member]
|
Dec. 31, 2012
Class of Financing Receivable [Member]
Home Loans [Member]
Residential Mortgage [Member]
|
Mar. 31, 2013
Class of Financing Receivable [Member]
Home Loans [Member]
Home Equity [Member]
|
Mar. 31, 2012
Class of Financing Receivable [Member]
Home Loans [Member]
Home Equity [Member]
|
Dec. 31, 2012
Class of Financing Receivable [Member]
Home Loans [Member]
Home Equity [Member]
|
Mar. 31, 2013
Class of Financing Receivable [Member]
Home Loans [Member]
Residential Mortgage [Member]
|
Mar. 31, 2012
Class of Financing Receivable [Member]
Home Loans [Member]
Residential Mortgage [Member]
|
Dec. 31, 2012
Class of Financing Receivable [Member]
Home Loans [Member]
Residential Mortgage [Member]
|
Mar. 31, 2013
Class of Financing Receivable [Member]
Home Loans [Member]
Home Equity [Member]
|
Mar. 31, 2012
Class of Financing Receivable [Member]
Home Loans [Member]
Home Equity [Member]
|
Dec. 31, 2012
Class of Financing Receivable [Member]
Home Loans [Member]
Home Equity [Member]
|
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Financing Receivable, Impaired [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Troubled Debt Restructurings, Non-performing With No Change in Repayment Terms At Time of Discharge | $ 2,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||
Troubled Debt Restructurings Carrying Value | 4,997 | [1] | 1,492 | [1] | 4,843 | [1] | 1,382 | [1] | 154 | [1] | 110 | [1] | 4,100 | 677 | [2] | 602 | [2] | 75 | [2] | 2,100 | ||||||||||||||||||||||||||||||||
Troubled Debt Restructurings Carrying Value Loans Discharged, Percent | 6.00% | 38.00% | ||||||||||||||||||||||||||||||||||||||||||||||||||
Toubled Debt Restructuring Carrying Value, Cumulative to Date Percentage | 56.00% | |||||||||||||||||||||||||||||||||||||||||||||||||||
Real Estate Acquired Through Foreclosure | 620 | 650 | ||||||||||||||||||||||||||||||||||||||||||||||||||
Unpaid Principal Balance | 37,828 | 34,449 | 3,964 | 3,880 | 22,130 | 20,226 | 2,796 | 2,624 | 15,698 | 14,223 | 1,168 | 1,256 | ||||||||||||||||||||||||||||||||||||||||
Carrying Value | 31,462 | 28,125 | 2,119 | 2,125 | 16,821 | 14,967 | 1,164 | 1,103 | 14,641 | 13,158 | 955 | 1,022 | ||||||||||||||||||||||||||||||||||||||||
Related Allowance | 1,425 | 1,252 | 370 | 448 | 1,425 | 1,252 | 370 | 448 | ||||||||||||||||||||||||||||||||||||||||||||
Average Carrying Value | 29,794 | 19,878 | 2,122 | 1,761 | 15,894 | 8,704 | 1,134 | 506 | 13,900 | 11,174 | 988 | 1,255 | ||||||||||||||||||||||||||||||||||||||||
Interest Income Recognized | $ 298 | [3] | $ 175 | [3] | $ 28 | [3] | $ 18 | [3] | $ 144 | [3] | $ 75 | [3] | $ 17 | [3] | $ 9 | [3] | $ 154 | [3] | $ 100 | [3] | $ 11 | [3] | $ 9 | [3] | ||||||||||||||||||||||||||||
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