Fair Value of Financial Instruments - Fair Value of Financial Assets and Liabilities on a Recurring Basis (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Fair Value of Financial Instruments [Abstract]
Deferred compensation plan assets	$ 13.9	$ 13.6
Supplementary pension plan assets	40.1	19.4
Interest rate swap liability	(0.2)
Interest rate swap asset		0.3
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value of Financial Instruments [Abstract]
Deferred compensation plan assets	0.0	0.0
Supplementary pension plan assets	0.0	0.0
Interest rate swap liability	0.0
Interest rate swap asset		0.0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value of Financial Instruments [Abstract]
Deferred compensation plan assets	13.9	13.6
Supplementary pension plan assets	40.1	19.4
Interest rate swap liability	(0.2)
Interest rate swap asset		0.3
Significant Unobservable Inputs (Level 3) [Member]
Fair Value of Financial Instruments [Abstract]
Deferred compensation plan assets	0.0	0.0
Supplementary pension plan assets	0.0	0.0
Interest rate swap liability	$ 0.0
Interest rate swap asset		$ 0.0