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Commitments and Contingencies Asbestos Damages Sought (Details) - Asbestos [Member] $ in Millions | 3 Months Ended
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Mar. 31, 2019 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 | 54
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 | 42
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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