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Commitments and Contingencies - Asbestos Narrative (Details) - Asbestos [Member] $ in Millions | 3 Months Ended | 348 Months Ended | 360 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2020 USD ($) | Dec. 31, 2019 USD ($) claimants | Dec. 31, 2020 USD ($) claimants cases | Dec. 31, 2018 claimants | Dec. 31, 2017 claimants
Loss Contingencies [Line Items] |  |  |  |  |
Number of pending cases | cases |  |  | 337 |  |
Number of pending claims | claimants |  | 4,759 | 4,655 | 4,820 | 5,256
Number of pending claims seeking specific amounts of damages | claimants |  |  | 40 |  |
Total settlement costs |  |  | $ 10.0 |  |
Percentage of settlement and defense costs covered by insurance |  | 40.00% |  |  |
Liabilities Subject to Compromise, Asbestos Obligations |  |  | $ 28.7 |  |
Selling, General and Administrative Expenses [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Impact of change in accounting principle | $ 23.4 |  |  |  |
Minimum [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Liabilities Subject to Compromise, Asbestos Obligations |  | $ 31.5 |  |  |
Maximum [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Liabilities Subject to Compromise, Asbestos Obligations |  | $ 43.3 |  |  |
Punitive Only Damages [Member] | Pending Litigation [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Number of pending claims seeking specific amounts of damages | claimants |  |  | 0 |  |

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