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Contingencies and Environmental Remediation (Details) $ in Millions | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2018 item | Dec. 31, 2018 USD ($) item | Aug. 31, 2017 item
Maximum |  |  |
Litigation contingencies |  |  |
Possible loss | $ |  | $ 5.3 |
Chemetco Superfund Site [Member] |  |  |
Litigation contingencies |  |  |
Number of companies included in group for environmental liability notice |  |  | 162
Number of companies joining group for environmental liability notice | 43 |  |
Number of potentially responsible parties for environmental liability |  | 2,000 |
Asbestos Litigation |  |  |
Litigation contingencies |  |  |
Number of lawsuits the entity is defending in different jurisdictions |  | 300 |

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