Share-Based Compensation - Allocation of Compensation Expense (Benefit) by Plan (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Share-Based Compensation
Total share-based compensation expense before tax	$ 33.9	$ 31.8
Stock options
Share-Based Compensation
Total share-based compensation expense before tax	11.5	8.5
RSUs
Share-Based Compensation
Total share-based compensation expense before tax	21.5	23.4
STAP awards
Share-Based Compensation
Total share-based compensation expense before tax	0.0	(0.8)
ESPP
Share-Based Compensation
Total share-based compensation expense before tax	$ 0.9	$ 0.7

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