Pension and Other Benefit Plans - Expected payments and assumptions (Details) - Pension Plan - Non-Uniformed Personnel Pension Plan $ in Millions	Dec. 31, 2025 USD ($)
Pension and Other Benefit Plans
Amount expected to be contribute	$ 5.6
Benefits expected to be paid in year 2026	4.5
Benefits expected to be paid in year 2027	4.8
Benefits expected to be paid in year 2028	5.2
Benefits expected to be paid in year 2029	5.6
Benefits expected to be paid in year 2030	6.5
Aggregate benefits expected to be paid in the five years from 2031 through 2035	$ 34.8

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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