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Commitments and Contingencies (Narrative) (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($) | Oct. 31, 2016 USD ($) | Oct. 31, 2016 RUB (₽)
Product Liability Contingency [Line Items] |  |  |  |  |  |
Expense for asbestos-related litigation | $ (200,000) | $ 700,000 | $ 1,900,000 | $ 2,400,000 |  |
Unfavorable Regulatory Action [Member] |  |  |  |  |  |
Product Liability Contingency [Line Items] |  |  |  |  |  |
Alleged unauthorized payment |  |  |  |  | $ 475 | ₽ 30,000

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- Definition Amount, after effects of reinsurance, of expense for claims incurred and costs incurred in the claim settlement process attributable to asbestos and environmental claims. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65670824&loc=d3e14764-158437 + Details
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