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Commitments and Contingencies (Details) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2016 USD ($) LegalMatter claims | Sep. 30, 2016 USD ($) LegalMatter claims | Dec. 31, 2015 USD ($) claims
Loss Contingencies [Line Items] |  |  |
Number of pending claims (legal matter) | claims | 570 | 570 | 488
Asbestos forecast claim period |  | 10 years | 10 years
Connecticut Voluntary Corrective Action Program |  |  |
Loss Contingencies [Line Items] |  |  |
Estimated total cleanup costs, accrual | $ 1.9 | $ 1.9 | $ 3.2
Loss contingency accrual, period decrease | (0.9) |  |
Superfund Sites Proceedings |  |  |
Loss Contingencies [Line Items] |  |  |
Estimated total cleanup costs, accrual | $ 0.4 | $ 0.4 |
Number of pending claims (legal matter) | LegalMatter | 1 | 1 |
Estimated total cleanup costs, cost sharing percentage (percent) |  | 2.00% |
PCB Contamination Proceedings |  |  |
Loss Contingencies [Line Items] |  |  |
Accrual for environmental loss contingencies | $ 0.2 | $ 0.2 |
Minimum | Superfund Sites Proceedings |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, maximum possible loss |  | 18.8 |
Maximum | Superfund Sites Proceedings |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, maximum possible loss |  | $ 29.6 |

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