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Loans (Accruing And Non-Accruing Loans By Class) (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loans, net of unearned income $ 17,686,502,000 [1] $ 16,230,166,000 $ 15,389,074,000
Commercial Financial And Industrial Portfolio Segment [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 10,410,077,000 8,974,676,000  
Total Non-Accruing 26,313,000 32,610,000  
Loans, net of unearned income 10,436,390,000 9,007,286,000 7,923,576,000
Consumer Real Estate Portfolio Segment [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 4,655,426,000 4,927,439,000  
Total Non-Accruing 111,092,000 120,632,000  
Loans, net of unearned income 4,766,518,000 [2] 5,048,071,000 [2] 5,333,371,000
Commercial Real Estate Portfolio Segment [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 1,666,251,000 1,262,361,000  
Total Non-Accruing 8,684,000 15,356,000  
Loans, net of unearned income 1,674,935,000 1,277,717,000 1,133,279,000
Permanent Mortgage Portfolio Segment [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 422,471,000 504,883,000  
Total Non-Accruing 31,652,000 34,078,000  
Loans, net of unearned income 454,123,000 538,961,000 662,242,000
Credit Card And Other Portfolio Segment [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 353,179,000 357,368,000  
Total Non-Accruing 1,357,000 763,000  
Loans, net of unearned income 354,536,000 358,131,000 $ 336,606,000
General C I [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 8,419,173,000 7,480,824,000  
Total Non-Accruing 22,866,000 19,641,000  
Loans, net of unearned income 8,442,039,000 7,500,465,000  
Loans To Mortgage Companies [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 1,669,800,000 1,162,894,000  
Total Non-Accruing 108,000 124,000  
Loans, net of unearned income 1,669,908,000 1,163,018,000  
TRUPs [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 305,027,000 [3] 325,882,000 [4]  
Total Non-Accruing 3,339,000 [3] 12,845,000 [4]  
Loans, net of unearned income 308,366,000 [3] 338,727,000 [4]  
LOCOM valuation allowance 25,500,000 26,200,000  
Income C R E [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 1,578,317,000 1,192,008,000  
Total Non-Accruing 7,404,000 14,499,000  
Loans, net of unearned income 1,585,721,000 1,206,507,000  
Residential C R E [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 66,846,000 34,724,000  
Total Non-Accruing 1,280,000 857,000  
Loans, net of unearned income 68,126,000 35,581,000  
Home Equity [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 2,004,776,000 2,385,192,000  
Total Non-Accruing 78,239,000 84,146,000  
Loans, net of unearned income 2,083,015,000 2,469,338,000  
R E Installment Loans [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 2,646,470,000 2,541,572,000  
Total Non-Accruing 32,853,000 36,486,000  
Loans, net of unearned income 2,679,323,000 2,578,058,000  
Credit Card      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 190,608,000 188,746,000  
Total Non-Accruing 0 0  
Loans, net of unearned income 190,608,000 188,746,000  
Other Consumer Loans Class      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 162,518,000 168,612,000  
Total Non-Accruing 1,357,000 763,000  
Loans, net of unearned income 163,875,000 169,375,000  
C&I Purchase Credit Impaired Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 16,077,000 5,076,000  
Total Non-Accruing 0 0  
Loans, net of unearned income 16,077,000 5,076,000  
CRE Purchase Credit Impaired Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 21,088,000 35,629,000  
Total Non-Accruing 0 0  
Loans, net of unearned income 21,088,000 35,629,000  
RE Installment Purchase Credit Impaired Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 4,180,000 675,000  
Total Non-Accruing 0 0  
Loans, net of unearned income 4,180,000 675,000  
Other Purchased Credit Impaired Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total Accruing 53,000 10,000  
Total Non-Accruing 0 0  
Loans, net of unearned income 53,000 10,000  
Accruing      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 17,433,207,000 15,950,951,000  
Total Accruing 17,507,404,000 16,026,727,000  
Accruing | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 50,896,000 50,531,000  
Accruing | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 23,301,000 25,245,000  
Accruing | Commercial Financial And Industrial Portfolio Segment [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 10,401,549,000 8,970,366,000  
Accruing | Commercial Financial And Industrial Portfolio Segment [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 7,445,000 3,540,000  
Accruing | Commercial Financial And Industrial Portfolio Segment [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 1,083,000 770,000  
Accruing | Consumer Real Estate Portfolio Segment [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 4,607,774,000 4,872,055,000  
Accruing | Consumer Real Estate Portfolio Segment [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 30,984,000 38,689,000  
Accruing | Consumer Real Estate Portfolio Segment [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 16,668,000 16,695,000  
Accruing | Commercial Real Estate Portfolio Segment [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 1,661,668,000 1,260,614,000  
Accruing | Commercial Real Estate Portfolio Segment [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 4,422,000 1,632,000  
Accruing | Commercial Real Estate Portfolio Segment [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 161,000 115,000  
Accruing | Permanent Mortgage Portfolio Segment [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 412,879,000 495,619,000  
Accruing | Permanent Mortgage Portfolio Segment [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 5,601,000 3,624,000  
Accruing | Permanent Mortgage Portfolio Segment [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 3,991,000 5,640,000  
Accruing | Credit Card And Other Portfolio Segment [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 349,337,000 352,297,000  
Accruing | Credit Card And Other Portfolio Segment [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 2,444,000 3,046,000  
Accruing | Credit Card And Other Portfolio Segment [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 1,398,000 2,025,000  
Accruing | General C I [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 8,413,480,000 7,477,410,000  
Accruing | General C I [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 5,411,000 3,196,000  
Accruing | General C I [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 282,000 218,000  
Accruing | Loans To Mortgage Companies [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 1,667,334,000 1,162,894,000  
Accruing | Loans To Mortgage Companies [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 1,971,000 0  
Accruing | Loans To Mortgage Companies [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 495,000 0  
Accruing | TRUPs [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 305,027,000 [3] 325,882,000 [4]  
Accruing | TRUPs [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 [3] 0 [4]  
Accruing | TRUPs [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 [3] 0 [4]  
Accruing | Income C R E [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 1,576,954,000 1,190,562,000  
Accruing | Income C R E [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 1,363,000 1,446,000  
Accruing | Income C R E [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Accruing | Residential C R E [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 66,846,000 34,541,000  
Accruing | Residential C R E [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 183,000  
Accruing | Residential C R E [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Accruing | Home Equity [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 1,972,286,000 2,347,361,000  
Accruing | Home Equity [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 21,570,000 26,738,000  
Accruing | Home Equity [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 10,920,000 11,093,000  
Accruing | R E Installment Loans [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 2,631,419,000 2,524,019,000  
Accruing | R E Installment Loans [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 9,394,000 11,951,000  
Accruing | R E Installment Loans [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 5,657,000 5,602,000  
Accruing | Credit Card      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 187,807,000 185,015,000  
Accruing | Credit Card | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 1,576,000 1,909,000  
Accruing | Credit Card | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 1,225,000 1,822,000  
Accruing | Other Consumer Loans Class      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 161,477,000 167,272,000  
Accruing | Other Consumer Loans Class | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 868,000 1,137,000  
Accruing | Other Consumer Loans Class | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 173,000 203,000  
Accruing | C&I Purchase Credit Impaired Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 15,708,000 4,180,000  
Accruing | C&I Purchase Credit Impaired Loans | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 63,000 344,000  
Accruing | C&I Purchase Credit Impaired Loans | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 306,000 552,000  
Accruing | CRE Purchase Credit Impaired Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 17,868,000 35,511,000  
Accruing | CRE Purchase Credit Impaired Loans | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 3,059,000 3,000  
Accruing | CRE Purchase Credit Impaired Loans | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 161,000 115,000  
Accruing | RE Installment Purchase Credit Impaired Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 4,069,000 675,000  
Accruing | RE Installment Purchase Credit Impaired Loans | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 20,000 0  
Accruing | RE Installment Purchase Credit Impaired Loans | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 91,000 0  
Accruing | Other Purchased Credit Impaired Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 53,000 10,000  
Accruing | Other Purchased Credit Impaired Loans | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Accruing | Other Purchased Credit Impaired Loans | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Non-Accruing      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 107,240,000 112,552,000  
Total Non-Accruing 179,098,000 203,439,000  
Non-Accruing | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 12,079,000 15,967,000  
Non-Accruing | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 59,779,000 74,920,000  
Non-Accruing | Commercial Financial And Industrial Portfolio Segment [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 3,649,000 636,000  
Non-Accruing | Commercial Financial And Industrial Portfolio Segment [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 1,114,000 1,726,000  
Non-Accruing | Commercial Financial And Industrial Portfolio Segment [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 21,550,000 30,248,000  
Non-Accruing | Consumer Real Estate Portfolio Segment [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 87,665,000 93,740,000  
Non-Accruing | Consumer Real Estate Portfolio Segment [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 8,268,000 9,896,000  
Non-Accruing | Consumer Real Estate Portfolio Segment [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 15,159,000 16,996,000  
Non-Accruing | Commercial Real Estate Portfolio Segment [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 831,000 1,495,000  
Non-Accruing | Commercial Real Estate Portfolio Segment [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 282,000 1,963,000  
Non-Accruing | Commercial Real Estate Portfolio Segment [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 7,571,000 11,898,000  
Non-Accruing | Permanent Mortgage Portfolio Segment [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 14,475,000 16,681,000  
Non-Accruing | Permanent Mortgage Portfolio Segment [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 2,415,000 2,382,000  
Non-Accruing | Permanent Mortgage Portfolio Segment [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 14,762,000 15,015,000  
Non-Accruing | Credit Card And Other Portfolio Segment [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 620,000 0  
Non-Accruing | Credit Card And Other Portfolio Segment [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Non-Accruing | Credit Card And Other Portfolio Segment [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 737,000 763,000  
Non-Accruing | General C I [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 3,649,000 636,000  
Non-Accruing | General C I [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 1,114,000 1,726,000  
Non-Accruing | General C I [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 18,103,000 17,279,000  
Non-Accruing | Loans To Mortgage Companies [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 0 0  
Non-Accruing | Loans To Mortgage Companies [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Non-Accruing | Loans To Mortgage Companies [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 108,000 124,000  
Non-Accruing | TRUPs [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 0 [3] 0 [4]  
Non-Accruing | TRUPs [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 [3] 0 [4]  
Non-Accruing | TRUPs [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 3,339,000 [3] 12,845,000 [4]  
Non-Accruing | Income C R E [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 831,000 1,495,000  
Non-Accruing | Income C R E [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 282,000 1,963,000  
Non-Accruing | Income C R E [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 6,291,000 11,041,000  
Non-Accruing | Residential C R E [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 0 0  
Non-Accruing | Residential C R E [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Non-Accruing | Residential C R E [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 1,280,000 857,000  
Non-Accruing | Home Equity [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 61,317,000 66,410,000  
Non-Accruing | Home Equity [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 6,619,000 6,628,000  
Non-Accruing | Home Equity [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 10,303,000 11,108,000  
Non-Accruing | R E Installment Loans [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 26,348,000 27,330,000  
Non-Accruing | R E Installment Loans [Member] | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 1,649,000 3,268,000  
Non-Accruing | R E Installment Loans [Member] | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 4,856,000 5,888,000  
Non-Accruing | Credit Card      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 0 0  
Non-Accruing | Credit Card | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Non-Accruing | Credit Card | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Non-Accruing | Other Consumer Loans Class      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 620,000 0  
Non-Accruing | Other Consumer Loans Class | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Non-Accruing | Other Consumer Loans Class | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 737,000 763,000  
Non-Accruing | C&I Purchase Credit Impaired Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 0 0  
Non-Accruing | C&I Purchase Credit Impaired Loans | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Non-Accruing | C&I Purchase Credit Impaired Loans | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Non-Accruing | CRE Purchase Credit Impaired Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 0 0  
Non-Accruing | CRE Purchase Credit Impaired Loans | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Non-Accruing | CRE Purchase Credit Impaired Loans | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Non-Accruing | RE Installment Purchase Credit Impaired Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 0 0  
Non-Accruing | RE Installment Purchase Credit Impaired Loans | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Non-Accruing | RE Installment Purchase Credit Impaired Loans | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Non-Accruing | Other Purchased Credit Impaired Loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Current 0 0  
Non-Accruing | Other Purchased Credit Impaired Loans | 30-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due 0 0  
Non-Accruing | Other Purchased Credit Impaired Loans | 90+ Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Past due $ 0 $ 0  
[1] December 31, 2015 includes $29.7 million of held-to-maturity consumer mortgage loans secured by residential real estate in process of foreclosure.
[2] Balances as of December 31, 201 5 and 201 4 , include $ 52. 8 million and $ 76.8 million of restricted real estate loans, respectively. See Note 21 - Variable Interest Entities for additional information.
[3] Total TRUPS i nclude s LOCOM valuation allowance of $25.5 million.
[4] Total TRUPS i nclu des LOCOM valuation allowance of $ 26.2 million.