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Commitments and Contingencies - Asbestos Claimant and Settlement (Details) - Asbestos [Member] | 12 Months Ended
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Dec. 31, 2017 USD ($) claimants | Dec. 31, 2016 USD ($) claimants | Dec. 31, 2015 USD ($) claimants
Loss Contingencies [Line Items] |  |  |
Number of pending claims at the beginning of period | 5,339 | 6,242 | 7,992
Number of pending claims filed during period | 173 | 140 | 266
Number of pending claims dismissed during period | 231 | 1,009 | 1,990
Number of pending claims settled during period | 25 | 34 | 26
Average settlement amount per claim during period | $ | $ 8,930 | $ 15,624 | $ 16,963
Total defense costs during period | $ | $ 2,280,000 | $ 2,920,000 | $ 3,160,000

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- Definition Number of Plaintiffs who had their claims dismissed during the period. + References No definition available. + Details
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- Definition Number of Plaintiffs who had their claims settled during the period. + References No definition available. + Details
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- Definition Loss Contingency, Number of New Plaintiffs Filing Claims During Period + References No definition available. + Details
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- Definition Average amount of consideration the entity has agreed to pay to settle a legal matter for claims settled during the period. + References No definition available. + Details
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- Definition The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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