Contingencies (Details) $ in Thousands		1 Months Ended					3 Months Ended
	Jun. 30, 2018 Party	Oct. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($) mi	Nov. 30, 2019 USD ($)	Mar. 31, 2016 Party mi	Oct. 01, 2022 USD ($) contaminate	Jan. 01, 2022 USD ($)
Loss Contingencies [Line Items]
Area of land | mi				9		8.3
Number of parties | Party	100					100
Loss related to litigation settlement					$ 600
Number of contaminants | contaminate							8
Insurance Environmental and Litigation Matters [Member]
Loss Contingencies [Line Items]
Reserves for insurance, environmental and litigation contingencies							$ 98,900	$ 78,400
Insurance settlements receivable							45,900	$ 31,800
Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of parties | Party	40
Plant, One [Member]
Loss Contingencies [Line Items]
Loss related to litigation settlement					300
Plant, Two [Member]
Loss Contingencies [Line Items]
Loss related to litigation settlement					$ 300
Maryland Department of Environment
Loss Contingencies [Line Items]
Loss Contingency, Damages Paid, Value			$ 540
Lower Passaic River Area
Loss Contingencies [Line Items]
Estimate of possible loss				$ 441,000			1,380,000
Lower Passaic River Area | Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, Damages Paid, Value		$ 300
Lower Passaic River Area | Pending Litigation [Member]
Loss Contingencies [Line Items]
Estimate of possible loss							$ 165,000