Receivables - Schedule of Receivables (Details) - USD ($) $ in Millions	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Receivables [Abstract]
Trade receivables - U.S. government	$ 98.0		$ 67.7
Trade receivables - other	1,441.1		1,160.6
Other receivables	114.4		119.2
Total receivables, gross	1,653.5		1,347.5
Less allowance for doubtful accounts	(9.9)	$ (7.2)	(7.4)	$ (7.2)	$ (7.1)	$ (6.7)
Total receivables, net	$ 1,643.6		$ 1,340.1