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Interest rate for amount awarded to other party in judgment on settlement of litigation.

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Refers to number of key officers, with whom control arrangements entered into by the entity.

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Amount of cash inflow (outflow) of operating activities of discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Carrying amount of estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid after one year or beyond the normal operating cycle, if longer.

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Amount awarded to other party in judgment or settlement of litigation.

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Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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Number of pending claims pertaining to a loss contingency.

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The amount of cash paid for the settlement of litigation or for other legal issues during the period.

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Commitments and Contingencies, Letters of Credit and Asbestos (Details) $ in Thousands	1 Months Ended		3 Months Ended	12 Months Ended			232 Months Ended
	Nov. 30, 2020 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) Claim	Dec. 31, 2020 USD ($) Claim Officer	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2020 USD ($) Claim	Aug. 31, 2020 USD ($)
Letters of Credit and Asbestos [Abstract]
Number of key officers \| Officer				1
Accrued asbestos liabilities			$ 55,226	$ 55,226	$ 49,696		$ 55,226
Financial Standby Letter of Credit [Member]
Letters of Credit and Asbestos [Abstract]
Outstanding letters of credit with certain vendors			$ 2,800	$ 2,800			$ 2,800
Asbestos [Member]
Letters of Credit and Asbestos [Abstract]
Pending claims, approximate number \| Claim			1,560	1,560			1,560
Payment for settled claims and awards related damages, including interest							$ 48,300
Accrued asbestos liabilities	$ 63,000	$ 58,100
Incremental pre-tax provision	$ 17,000	$ 8,700
Asbestos [Member] \| Minimum [Member]
Letters of Credit and Asbestos [Abstract]
Range of possible loss			$ 63,000	$ 63,000			63,000	$ 58,100
Asbestos [Member] \| Maximum [Member]
Letters of Credit and Asbestos [Abstract]
Range of possible loss			99,100	99,100			99,100	$ 99,300
Asbestos [Member] \| California Case [Member]
Letters of Credit and Asbestos [Abstract]
Compensatory damages judgment			$ 7,600
Compensatory damages judgment interest percentage			10.00%
Asbestos [Member] \| Discontinued Operations [Member]
Letters of Credit and Asbestos [Abstract]
Total operating cash outflows related to discontinued operations				(16,400)	$ (7,600)	$ (5,100)
Asbestos [Member] \| Discontinued Operations [Member] \| Minimum [Member]
Letters of Credit and Asbestos [Abstract]
Range of possible loss			$ 48,700	48,700			48,700
Asbestos [Member] \| Discontinued Operations [Member] \| Maximum [Member]
Letters of Credit and Asbestos [Abstract]
Range of possible loss			$ 95,400	$ 95,400			$ 95,400