Other Assets and Liabilities - Schedule of Other Non-Current Assets (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Other Assets And Other Liabilities [Abstract]
Right of use assets	$ 45.0	$ 43.1
Prepaid pension assets	5.6	5.6
Investments	21.2	20.6
Deferred income tax	16.2	17.2
Long-term contract assets	24.3	18.0
Prepaid cloud computing fees and deferred implementation costs	32.1	23.2
Other	68.0	60.1
Total	212.4	$ 187.8
Right-of-use assets recognized during period	$ 9.6