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Commitments and Contingencies - Asbestos Narrative (Details) $ in Millions | 12 Months Ended | 324 Months Ended
--- | --- | ---
Dec. 31, 2017 claimants cases | Dec. 31, 2017 USD ($) claimants cases
Maximum [Member] |  |
Loss Contingencies [Line Items] |  |
Estimated time until primary insurance is exhausted | 12 months |
Asbestos [Member] |  |
Loss Contingencies [Line Items] |  |
Total settlement costs | $ |  | $ 8.5
Percentage of settlement and defense costs covered by insurance |  | 40.00%
Asbestos [Member] | Pending Litigation [Member] |  |
Loss Contingencies [Line Items] |  |
Number of pending cases | cases | 605 | 605
Number of pending claims | 5,256 |
Number of pending claims seeking specific amounts of damages | 49 | 49

X
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- Definition Number of pending claims pertaining to a loss contingency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349 + Details
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