Loans (Total Originated, Acquired and Covered Loans Outstanding Table) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Commercial	$ 9,128,591	$ 8,750,109
Loans and Leases Receivable, Gross, Consumer, Mortgage	1,061,043	1,050,584
Loans and Leases Receivable, Gross, Consumer, Installment, Other	3,162,493	2,738,656
Loans and Leases Receivable, Gross, Consumer, Home Equity	1,417,330	1,311,932
FDIC Indemnification Asset	22,033us-gaap_FDICIndemnificationAsset	61,827us-gaap_FDICIndemnificationAsset
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card	164,478	148,313
Loans and Leases Receivable, Gross, Consumer, Lease Financing	370,179	239,551
Loans and Leases Receivable, Gross	15,326,147	14,300,972
Allowance for loan losses	(143,649)	(141,252)
Net loans	15,182,498	14,159,720
Loans and Leases Receivable, Gross, Carrying Amount, Covered		547,943
Originated Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Commercial	7,830,085	6,648,279
Loans and Leases Receivable, Gross, Consumer, Mortgage	625,283	529,253
Loans and Leases Receivable, Gross, Consumer, Installment, Other	2,393,451	1,727,925
Loans and Leases Receivable, Gross, Consumer, Home Equity	1,110,336	920,066
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card	164,478	148,313
Loans and Leases Receivable, Gross, Consumer, Lease Financing	370,179	239,551
Loans and Leases Receivable, Gross	12,493,812	10,213,387
Allowance for loan losses	(95,696)	(96,484)
Net loans		10,116,903
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Commercial	1,086,899	1,725,970
Loans and Leases Receivable, Gross, Consumer, Mortgage	394,484	470,652
Loans and Leases Receivable, Gross, Consumer, Installment, Other	764,168	1,004,569
Loans and Leases Receivable, Gross, Consumer, Home Equity	233,629	294,424
Loans and Leases Receivable, Gross	2,479,180	3,495,615
Allowance for loan losses	(7,457)	(741)
Net loans	2,471,723	3,494,874
Covered Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Commercial	211,607	375,860
Loans and Leases Receivable, Gross, Consumer, Mortgage	41,276	50,679
Loans and Leases Receivable, Gross, Consumer, Installment, Other	4,874	6,162
Loans and Leases Receivable, Gross, Consumer, Home Equity	73,365	97,442
FDIC Indemnification Asset	22,033	61,827
Loans and Leases Receivable, Gross, Carrying Amount, Covered	353,155	591,970
Loans and Leases Receivable, Allowance, Covered	(40,496)	(44,027)
Loans and Leases Receivable, Net Reported Amount, Covered	$ 312,659	$ 547,943

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Carrying amount of receivable assets originating from the indemnification agreement with the Federal Deposit Insurance Corporation (FDIC), in which the FDIC is to partially cover losses.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of allowance for loan and lease losses covered by loss sharing agreements.

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Amount before allowance of commercial loans and leases receivable includes, but not limited to, commercial and industrial loans, agricultural loans, mortgage loans, promissory notes, interbank and other loans to financial institutions, draws against credit facilities, trade financing, lease financings. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance of revolving, open-end loan, extended under a line of credit and secured by the borrower's residential property. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance of other consumer installment loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance of consumer lease agreements. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance of consumer mortgage. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes subordinated loans such as home equity lines of credit and loans and leases covered under loss sharing agreements.

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Amount before allowance of credit card loans issued to individuals. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Aggregate gross carrying amount of loans and leases receivable covered by loss sharing agreements.

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No definition available.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

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Net carrying amount of loans and leases receivable covered by loss sharing agreements.

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No definition available.

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