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Commitments and Contingencies - Asbestos Narrative (Details) - Asbestos [Member] $ in Millions | 3 Months Ended | 348 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2019 USD ($) claimants cases | Dec. 31, 2019 USD ($) claimants cases | Dec. 31, 2018 claimants | Dec. 31, 2017 claimants | Dec. 31, 2016 claimants
Loss Contingencies [Line Items] |  |  |  |  |
Number of pending cases | cases | 346 | 346 |  |  |
Number of pending claims | 4,759 | 4,759 | 4,820 | 5,256 | 5,339
Number of pending claims seeking specific amounts of damages | 56 | 56 |  |  |
Total settlement costs | $ |  | $ 9.4 |  |  |
Percentage of settlement and defense costs covered by insurance |  | 40.00% |  |  |
Punitive Only Damages [Member] | Pending Litigation [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ | $ 5.0 |  |  |  |
Number of pending claims seeking specific amounts of damages | 1 | 1 |  |  |

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