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Commitments and Contingent Liabilities - Narrative (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2013
Loss Contingencies [Line Items]
Threshold for disclosing material environmental legal proceedings	$ 1.0
Uninsured Risk
Loss Contingencies [Line Items]
Payments	40.4	$ 8.4
Black lung Benefit
Loss Contingencies [Line Items]
Payments	4.1
Accretion	6.0
Accrual for black lung liability	$ 60.0

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Threshold For Disclosing Material Environmental Legal Proceedings

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-3

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Amount of loss contingency liability.

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