Commitments and Contingent Liabilities - Narrative (Details)			3 Months Ended
	Mar. 07, 2024 USD ($)	Aug. 23, 2017 plaintiff	Mar. 31, 2024 USD ($) plaintiff
Fitzwater Litigation
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff			3
Casey Litigation | Pending Litigation
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff		2
United Mine Workers of America 1992 Benefit Plan Litigation | Pending Litigation | Minimum
Loss Contingencies [Line Items]
Annual servicing costs			$ 10,000,000
United Mine Workers of America 1992 Benefit Plan Litigation | Pending Litigation | Maximum
Loss Contingencies [Line Items]
Annual servicing costs			20,000,000
Indemnification Lawsuit
Loss Contingencies [Line Items]
Loss contingency, damages sought, value	$ 75,000,000
Litigation settlement period	5 years
Loss contingency accrual			$ 0