Business and Summary of Significant Accounting Principles (Guarantees) (Details) $ in Millions |
12 Months Ended |
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Dec. 31, 2017
USD ($)
entity
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| Accounting Policies [Abstract] | |
| Number of VIEs | entity | 7 |
| Guarantor liabilities | $ | $ 65.8 |
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- Definition Variable Interest Entity, Number Of Entities No definition available.
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- References No definition available.
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- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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