Supplemental Financial Data - Schedule of Other Non-Current Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Right of use assets	$ 42.6	$ 43.1
Prepaid pension assets	5.5	5.6
Investments	32.4	20.6
Deferred income tax	2.9	17.2
Long-term contract assets	32.8	18.0	$ 5.6
Prepaid cloud computing fees and deferred implementation costs	37.1	23.2
Long-term technology vendor contracts	79.3	46.9
Other	19.4	13.2
Total	$ 252.0	$ 187.8