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Asset Quality (Consumer Real Estate Secured Asset Quality Indicators) (Details) - USD ($)
Jun. 30, 2016
Dec. 31, 2015
Jun. 30, 2015
Financing Receivable, Recorded Investment [Line Items]      
Purchased Impaired Loans - Recorded Investment $ 3,236,000,000   $ 4,465,000,000
% of Loans 100.00% 100.00%  
Home Equity [Member] | 1st Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans $ 16,800,000,000 $ 17,060,000,000  
Purchased Impaired Loans - Outstanding Balance 241,000,000 249,000,000  
Home Equity [Member] | 2nd Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 12,820,000,000 13,666,000,000  
Purchased Impaired Loans - Outstanding Balance 1,370,000,000 1,520,000,000  
Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 12,130,000,000 11,542,000,000  
Residential Real Estate [Member] | Government Insured or Guaranteed Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 834,000,000 923,000,000  
Residential Real Estate [Member] | Purchased Impaired Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Purchased Impaired Loans - Outstanding Balance 1,768,000,000 1,915,000,000  
Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 41,750,000,000 42,268,000,000  
Purchased Impaired Loans - Outstanding Balance 3,379,000,000 3,684,000,000  
Purchased Impaired Loans - Recorded Investment $ 3,098,000,000 $ 3,353,000,000  
Total home equity and residential real estate loans [Member] | New Jersey [Member] | High Risk [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 16.00% 14.00%  
Total home equity and residential real estate loans [Member] | Pennsylvania [Member] | High Risk [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 12.00% 12.00%  
Total home equity and residential real estate loans [Member] | Illinois [Member] | High Risk [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 11.00% 11.00%  
Total home equity and residential real estate loans [Member] | Illinois [Member] | Purchased Impaired Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 11.00% 11.00%  
Total home equity and residential real estate loans [Member] | Ohio [Member] | High Risk [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 11.00% 11.00%  
Total home equity and residential real estate loans [Member] | Ohio [Member] | Purchased Impaired Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 9.00% 9.00%  
Total home equity and residential real estate loans [Member] | Florida [Member] | High Risk [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 7.00% 7.00%  
Total home equity and residential real estate loans [Member] | Florida [Member] | Purchased Impaired Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 14.00% 14.00%  
Total home equity and residential real estate loans [Member] | California [Member] | Purchased Impaired Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 16.00% 16.00%  
Total home equity and residential real estate loans [Member] | Maryland [Member] | High Risk [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 7.00% 7.00%  
Total home equity and residential real estate loans [Member] | Michigan [Member] | High Risk [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 4.00% 5.00%  
Total home equity and residential real estate loans [Member] | Michigan [Member] | Purchased Impaired Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 5.00% 5.00%  
Total home equity and residential real estate loans [Member] | North Carolina [Member] | Purchased Impaired Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 7.00% 7.00%  
Total home equity and residential real estate loans [Member] | All Other States Maximum [Member] | High Risk [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 4.00% 4.00%  
Total home equity and residential real estate loans [Member] | All Other States Maximum [Member] | Purchased Impaired Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 4.00% 4.00%  
Total home equity and residential real estate loans [Member] | All Other States [Member] | High Risk [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 32.00% 33.00%  
Total home equity and residential real estate loans [Member] | All Other States [Member] | Purchased Impaired Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
% of Loans 38.00% 38.00%  
LTV greater than or equal to 125% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Home Equity [Member] | 1st Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans $ 213,000,000 $ 283,000,000  
Purchased Impaired Loans - Outstanding Balance 5,000,000 6,000,000  
LTV greater than or equal to 125% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Home Equity [Member] | 2nd Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 815,000,000 960,000,000  
Purchased Impaired Loans - Outstanding Balance 138,000,000 164,000,000  
LTV greater than or equal to 125% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 227,000,000 284,000,000  
Purchased Impaired Loans - Outstanding Balance 162,000,000 147,000,000  
LTV greater than or equal to 125% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 1,255,000,000 1,527,000,000  
Purchased Impaired Loans - Outstanding Balance 305,000,000 317,000,000  
LTV greater than or equal to 125% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Home Equity [Member] | 1st Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 35,000,000 40,000,000  
Purchased Impaired Loans - Outstanding Balance 5,000,000 6,000,000  
LTV greater than or equal to 125% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Home Equity [Member] | 2nd Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 148,000,000 189,000,000  
Purchased Impaired Loans - Outstanding Balance 62,000,000 79,000,000  
LTV greater than or equal to 125% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 51,000,000 68,000,000  
Purchased Impaired Loans - Outstanding Balance 60,000,000 76,000,000  
LTV greater than or equal to 125% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 234,000,000 297,000,000  
Purchased Impaired Loans - Outstanding Balance 127,000,000 161,000,000  
LTV greater than or equal to 125% and updated FICO scores [Member] | FICO Score- Missing [Member] | Home Equity [Member] | 1st Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 1,000,000 1,000,000  
LTV greater than or equal to 125% and updated FICO scores [Member] | FICO Score- Missing [Member] | Home Equity [Member] | 2nd Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 6,000,000 8,000,000  
Purchased Impaired Loans - Outstanding Balance 2,000,000 7,000,000  
LTV greater than or equal to 125% and updated FICO scores [Member] | FICO Score- Missing [Member] | Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 9,000,000 5,000,000  
Purchased Impaired Loans - Outstanding Balance 4,000,000 5,000,000  
LTV greater than or equal to 125% and updated FICO scores [Member] | FICO Score- Missing [Member] | Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 16,000,000 14,000,000  
Purchased Impaired Loans - Outstanding Balance 6,000,000 12,000,000  
LTV greater than or equal to 100% to less than 125% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Home Equity [Member] | 1st Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 553,000,000 646,000,000  
Purchased Impaired Loans - Outstanding Balance 9,000,000 12,000,000  
LTV greater than or equal to 100% to less than 125% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Home Equity [Member] | 2nd Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 1,541,000,000 1,733,000,000  
Purchased Impaired Loans - Outstanding Balance 314,000,000 331,000,000  
LTV greater than or equal to 100% to less than 125% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 444,000,000 564,000,000  
Purchased Impaired Loans - Outstanding Balance 165,000,000 186,000,000  
LTV greater than or equal to 100% to less than 125% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 2,538,000,000 2,943,000,000  
Purchased Impaired Loans - Outstanding Balance 488,000,000 529,000,000  
LTV greater than or equal to 100% to less than 125% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Home Equity [Member] | 1st Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 78,000,000 92,000,000  
Purchased Impaired Loans - Outstanding Balance 8,000,000 9,000,000  
LTV greater than or equal to 100% to less than 125% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Home Equity [Member] | 2nd Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 260,000,000 302,000,000  
Purchased Impaired Loans - Outstanding Balance 126,000,000 145,000,000  
LTV greater than or equal to 100% to less than 125% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 105,000,000 102,000,000  
Purchased Impaired Loans - Outstanding Balance 104,000,000 118,000,000  
LTV greater than or equal to 100% to less than 125% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 443,000,000 496,000,000  
Purchased Impaired Loans - Outstanding Balance 238,000,000 272,000,000  
LTV greater than or equal to 100% to less than 125% and updated FICO scores [Member] | FICO Score- Missing [Member] | Home Equity [Member] | 1st Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 3,000,000 3,000,000  
LTV greater than or equal to 100% to less than 125% and updated FICO scores [Member] | FICO Score- Missing [Member] | Home Equity [Member] | 2nd Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 3,000,000 4,000,000  
Purchased Impaired Loans - Outstanding Balance 2,000,000 8,000,000  
LTV greater than or equal to 100% to less than 125% and updated FICO scores [Member] | FICO Score- Missing [Member] | Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 12,000,000 8,000,000  
Purchased Impaired Loans - Outstanding Balance 6,000,000 7,000,000  
LTV greater than or equal to 100% to less than 125% and updated FICO scores [Member] | FICO Score- Missing [Member] | Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 18,000,000 15,000,000  
Purchased Impaired Loans - Outstanding Balance 8,000,000 15,000,000  
LTV greater than or equal to 90% to less than 100% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Home Equity [Member] | 1st Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 626,000,000 698,000,000  
Purchased Impaired Loans - Outstanding Balance 8,000,000 10,000,000  
LTV greater than or equal to 90% to less than 100% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Home Equity [Member] | 2nd Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 1,357,000,000 1,492,000,000  
Purchased Impaired Loans - Outstanding Balance 158,000,000 167,000,000  
LTV greater than or equal to 90% to less than 100% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 561,000,000 615,000,000  
Purchased Impaired Loans - Outstanding Balance 122,000,000 133,000,000  
LTV greater than or equal to 90% to less than 100% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 2,544,000,000 2,805,000,000  
Purchased Impaired Loans - Outstanding Balance 288,000,000 310,000,000  
LTV greater than or equal to 90% to less than 100% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Home Equity [Member] | 1st Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 81,000,000 88,000,000  
Purchased Impaired Loans - Outstanding Balance 5,000,000 6,000,000  
LTV greater than or equal to 90% to less than 100% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Home Equity [Member] | 2nd Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 203,000,000 226,000,000  
Purchased Impaired Loans - Outstanding Balance 71,000,000 75,000,000  
LTV greater than or equal to 90% to less than 100% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 82,000,000 94,000,000  
Purchased Impaired Loans - Outstanding Balance 66,000,000 68,000,000  
LTV greater than or equal to 90% to less than 100% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 366,000,000 408,000,000  
Purchased Impaired Loans - Outstanding Balance 142,000,000 149,000,000  
LTV greater than or equal to 90% to less than 100% and updated FICO scores [Member] | FICO Score- Missing [Member] | Home Equity [Member] | 1st Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 1,000,000 1,000,000  
LTV greater than or equal to 90% to less than 100% and updated FICO scores [Member] | FICO Score- Missing [Member] | Home Equity [Member] | 2nd Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 2,000,000 3,000,000  
Purchased Impaired Loans - Outstanding Balance 1,000,000 4,000,000  
LTV greater than or equal to 90% to less than 100% and updated FICO scores [Member] | FICO Score- Missing [Member] | Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 16,000,000 10,000,000  
Purchased Impaired Loans - Outstanding Balance 3,000,000 3,000,000  
LTV greater than or equal to 90% to less than 100% and updated FICO scores [Member] | FICO Score- Missing [Member] | Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 19,000,000 14,000,000  
Purchased Impaired Loans - Outstanding Balance 4,000,000 7,000,000  
LTV less than 90% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Home Equity [Member] | 1st Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 13,928,000,000 13,895,000,000  
Purchased Impaired Loans - Outstanding Balance 116,000,000 106,000,000  
LTV less than 90% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Home Equity [Member] | 2nd Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 7,631,000,000 7,808,000,000  
Purchased Impaired Loans - Outstanding Balance 325,000,000 345,000,000  
LTV less than 90% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 9,734,000,000 9,117,000,000  
Purchased Impaired Loans - Outstanding Balance 609,000,000 665,000,000  
LTV less than 90% and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 31,293,000,000 30,820,000,000  
Purchased Impaired Loans - Outstanding Balance 1,050,000,000 1,116,000,000  
LTV less than 90% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Home Equity [Member] | 1st Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 1,257,000,000 1,282,000,000  
Purchased Impaired Loans - Outstanding Balance 81,000,000 91,000,000  
LTV less than 90% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Home Equity [Member] | 2nd Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 842,000,000 923,000,000  
Purchased Impaired Loans - Outstanding Balance 168,000,000 182,000,000  
LTV less than 90% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 600,000,000 570,000,000  
Purchased Impaired Loans - Outstanding Balance 421,000,000 455,000,000  
LTV less than 90% and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 2,699,000,000 2,775,000,000  
Purchased Impaired Loans - Outstanding Balance 670,000,000 728,000,000  
LTV less than 90% and updated FICO scores [Member] | FICO Score- Missing [Member] | Home Equity [Member] | 1st Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 24,000,000 31,000,000  
Purchased Impaired Loans - Outstanding Balance 1,000,000 1,000,000  
LTV less than 90% and updated FICO scores [Member] | FICO Score- Missing [Member] | Home Equity [Member] | 2nd Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 12,000,000 18,000,000  
Purchased Impaired Loans - Outstanding Balance 3,000,000 13,000,000  
LTV less than 90% and updated FICO scores [Member] | FICO Score- Missing [Member] | Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 287,000,000 105,000,000  
Purchased Impaired Loans - Outstanding Balance 26,000,000 31,000,000  
LTV less than 90% and updated FICO scores [Member] | FICO Score- Missing [Member] | Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 323,000,000 154,000,000  
Purchased Impaired Loans - Outstanding Balance 30,000,000 45,000,000  
Missing LTV and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Home Equity [Member] | 1st Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Purchased Impaired Loans - Outstanding Balance 2,000,000 1,000,000  
Missing LTV and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 2,000,000    
Purchased Impaired Loans - Outstanding Balance 15,000,000 14,000,000  
Missing LTV and updated FICO scores [Member] | FICO Score- Greater than 660 [Member] | Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans - Excluding Purchased Impaired Loans 2,000,000    
Purchased Impaired Loans - Outstanding Balance 17,000,000 15,000,000  
Missing LTV and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Home Equity [Member] | 1st Liens [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Purchased Impaired Loans - Outstanding Balance 1,000,000 1,000,000  
Missing LTV and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Purchased Impaired Loans - Outstanding Balance 4,000,000 6,000,000  
Missing LTV and updated FICO scores [Member] | FICO Score- Less than or equal to 660 [Member] | Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Purchased Impaired Loans - Outstanding Balance 5,000,000 7,000,000  
Missing LTV and updated FICO scores [Member] | FICO Score- Missing [Member] | Residential Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Purchased Impaired Loans - Outstanding Balance 1,000,000 1,000,000  
Missing LTV and updated FICO scores [Member] | FICO Score- Missing [Member] | Total home equity and residential real estate loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Purchased Impaired Loans - Outstanding Balance $ 1,000,000 $ 1,000,000