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Commitments and Contingencies Asbestos Damages Sought (Details) - Asbestos [Member] $ in Millions | 6 Months Ended
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Jun. 30, 2018 USD ($) claimants
Compensatory and Punitive Damages [Member] | Range 1 [Member] | Minimum [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | $ 0.0
Compensatory and Punitive Damages [Member] | Range 1 [Member] | Maximum [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | 0.6
Compensatory and Punitive Damages [Member] | Range 2 [Member] | Minimum [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | 0.6
Compensatory and Punitive Damages [Member] | Range 2 [Member] | Maximum [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | 5.0
Compensatory and Punitive Damages [Member] | Range 3 [Member] | Minimum [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | 5.0
Compensatory Only Damages [Member] | Range 1 [Member] | Minimum [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | 0.0
Compensatory Only Damages [Member] | Range 1 [Member] | Maximum [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | 0.6
Compensatory Only Damages [Member] | Range 2 [Member] | Minimum [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | 0.6
Compensatory Only Damages [Member] | Range 2 [Member] | Maximum [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | 5.0
Compensatory Only Damages [Member] | Range 3 [Member] | Minimum [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | 5.0
Punitive Only Damages [Member] | Range 1 [Member] | Minimum [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | 0.0
Punitive Only Damages [Member] | Range 1 [Member] | Maximum [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | 2.5
Punitive Only Damages [Member] | Range 2 [Member] | Minimum [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | 2.5
Punitive Only Damages [Member] | Range 2 [Member] | Maximum [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | 5.0
Punitive Only Damages [Member] | Range 3 [Member] | Minimum [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | $ 5.0
Pending Litigation [Member] | Compensatory Only Damages [Member] |
Loss Contingencies [Line Items] |
Number of pending claims seeking specific amounts of damages | claimants | 60
Pending Litigation [Member] | Compensatory Only Damages [Member] | Range 1 [Member] |
Loss Contingencies [Line Items] |
Number of pending claims seeking specific amounts of damages | claimants | 0
Pending Litigation [Member] | Compensatory Only Damages [Member] | Range 2 [Member] |
Loss Contingencies [Line Items] |
Number of pending claims seeking specific amounts of damages | claimants | 12
Pending Litigation [Member] | Compensatory Only Damages [Member] | Range 3 [Member] |
Loss Contingencies [Line Items] |
Number of pending claims seeking specific amounts of damages | claimants | 48
Pending Litigation [Member] | Punitive Only Damages [Member] |
Loss Contingencies [Line Items] |
Number of pending claims seeking specific amounts of damages | claimants | 0

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- Definition The value (monetary amount) of the award the plaintiff seeks in the legal matter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14557-108349 Reference 3: 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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