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Other Operating Income (Expense) - Additional Information (Details) $ in Millions | 3 Months Ended
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Jun. 30, 2018 USD ($)
Other Operating Income (Expense) |
Other Operating Income (Expense) [Line Items] |
Environmental insurance recovery write-down | $ 7.3

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- Definition Amount of any recovery from third parties that is credited to environmental remediation costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13296-110859 + Details
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