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Commitments and Contingencies, Asbestos (Details) $ in Thousands	1 Months Ended		3 Months Ended			235 Months Ended
	Nov. 30, 2020 USD ($)	Sep. 30, 2020 USD ($)	Mar. 31, 2021 USD ($) Claim	Dec. 31, 2020 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2021 USD ($) Claim	Aug. 31, 2020 USD ($)	Dec. 31, 2018 USD ($)
Asbestos [Abstract]
Accrued asbestos liabilities			$ 54,630	$ 55,226		$ 54,630
Asbestos [Member]
Asbestos [Abstract]
Pending claims, approximate number | Claim			1,590			1,590
Payment for settled claims and awards related damages, including interest						$ 51,200
Accrued asbestos liabilities	$ 63,000	$ 58,100
Incremental pre-tax provision	$ 17,000	$ 8,700
Asbestos [Member] | Minimum [Member]
Asbestos [Abstract]
Range of possible loss				63,000			$ 58,100
Asbestos [Member] | Maximum [Member]
Asbestos [Abstract]
Range of possible loss				99,100			$ 99,300
Asbestos [Member] | California Case [Member]
Asbestos [Abstract]
Range of possible loss								$ 7,600
Compensatory damages judgment				$ 7,600
Compensatory damages judgment interest percentage				10.00%
Asbestos [Member] | Discontinued Operations [Member]
Asbestos [Abstract]
Total operating cash outflows related to discontinued operations			$ (3,300)		$ (1,600)
Asbestos [Member] | Discontinued Operations [Member] | Minimum [Member]
Asbestos [Abstract]
Range of possible loss				$ 48,700
Asbestos [Member] | Discontinued Operations [Member] | Maximum [Member]
Asbestos [Abstract]
Range of possible loss				$ 95,400

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