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Commitments and Contingencies, Asbestos (Details) $ in Thousands	9 Months Ended		12 Months Ended	241 Months Ended
	Sep. 30, 2021 USD ($) Claim	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2021 USD ($) Claim	Aug. 31, 2021 USD ($)
Asbestos [Abstract]
Accrued asbestos liabilities	$ 57,532		$ 55,226	$ 57,532
Asbestos [Member]
Asbestos [Abstract]
Pending claims, approximate number | Claim	1,585			1,585
Payment for settled claims and awards related damages, including interest				$ 53,400
Decrease in range of possible loss from lower range			(2,100)
Increase in range of possible loss from upper range			$ 1,100
Accrued asbestos liabilities	$ 60,900			$ 60,900
Incremental pre-tax provision	5,300
Asbestos [Member] | Minimum [Member]
Asbestos [Abstract]
Range of possible loss					$ 60,900
Asbestos [Member] | Maximum [Member]
Asbestos [Abstract]
Range of possible loss					100,200
Asbestos [Member] | Discontinued Operations [Member]
Asbestos [Abstract]
Total operating cash outflows related to discontinued operations	$ 7,300	$ 4,700
Asbestos [Member] | Discontinued Operations [Member] | Minimum [Member]
Asbestos [Abstract]
Range of possible loss					49,400
Asbestos [Member] | Discontinued Operations [Member] | Maximum [Member]
Asbestos [Abstract]
Range of possible loss					$ 99,300

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