Other Assets and Receivables (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Investment in Qualified Affordable Housing Limited Partnerships
Investments for qualified affordable housing limited partnerships	$ 15.6	$ 12.9
Additional contribution on qualified affordable housing limited partnerships	4.1	4.1
Other Receivables
Short term receivables	$ 2.6	$ 14.1

Amount of investment in qualified affordable housing projects.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 740
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64813897&loc=SL49122993-202985

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Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer.

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Amount of commitment or contingent commitments to qualified affordable housing project investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 740
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=64813897&loc=SL49122993-202985

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