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