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Stock-Based Compensation - Allocation of Share-based Compensation Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock compensation expense	$ 23.8	$ 18.7	$ 23.3
Stock option and appreciation rights
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock compensation expense	9.6	11.0	11.3
Performance share units
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock compensation expense	3.9	2.2	5.9
Employee stock purchase plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock compensation expense	1.2	1.3	1.3
Deferred compensation plans and restricted share awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock compensation expense	$ 9.1	$ 4.2	$ 4.8

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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