Retirement Plans and Other Postretirement Benefits - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended
Apr. 30, 2026	Mar. 31, 2026
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Minimum contributions under MAP-21		$ 0
Other Benefits Plans \| Subsequent Event
Defined Benefit Plan Disclosure [Line Items]
Retiree medical cost reimbursement	$ 23,000,000

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.

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+ Details