Loans and Leases (Troubled Debt Restructurings) (Details) - Lease Financing, net $ in Millions	3 Months Ended
Mar. 31, 2016 USD ($) Contract	Mar. 31, 2015 USD ($) Contract
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases \| Contract	31	59
Financing Receivable, Modifications, Recorded Investment, Modified During Period	$ 14.9	$ 7.9
Financing Receivable, Modifications, Unpaid Principal Balance	$ 19.9	$ 11.0
Commercial
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases \| Contract	7	2
Financing Receivable, Modifications, Recorded Investment, Modified During Period	$ 9.4	$ 0.8
Financing Receivable, Modifications, Unpaid Principal Balance	$ 13.7	$ 0.8
Commercial \| Commercial and Institutional
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases \| Contract	2	1
Financing Receivable, Modifications, Recorded Investment, Modified During Period	$ 4.0	$ 0.1
Financing Receivable, Modifications, Unpaid Principal Balance	$ 6.0	$ 0.1
Commercial \| Real Estate
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases \| Contract	5	1
Financing Receivable, Modifications, Recorded Investment, Modified During Period	$ 5.4	$ 0.7
Financing Receivable, Modifications, Unpaid Principal Balance	$ 7.7	$ 0.7
Personal
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases \| Contract	24	57
Financing Receivable, Modifications, Recorded Investment, Modified During Period	$ 5.5	$ 7.1
Financing Receivable, Modifications, Unpaid Principal Balance	$ 6.2	$ 10.2
Personal \| Real Estate
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases \| Contract	24	57
Financing Receivable, Modifications, Recorded Investment, Modified During Period	$ 5.5	$ 7.1
Financing Receivable, Modifications, Unpaid Principal Balance	$ 6.2	$ 10.2
Personal \| Private Client
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases \| Contract	0
Financing Receivable, Modifications, Recorded Investment, Modified During Period	$ 0.0
Financing Receivable, Modifications, Unpaid Principal Balance	$ 0.0

Financing Receivable, Modifications, Recorded Investment, Modified During Period

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Financing Receivable, Modifications, Unpaid Principal Balance

+ References

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- Definition

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+ References

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

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