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Contingencies Gain Contingency (Details) $ in Millions | Sep. 30, 2017 USD ($)
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Commitments and Contingencies Disclosure [Abstract] |
Gain Contingency, Unrecorded Amount | $ 84.3

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- Definition The amount or range of possible amounts of gain that could be realized upon the resolution of a contingency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6397426&loc=d3e17499-108355 + Details
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