Intangible Assets - Changes in Carrying Value (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	$ 1,844.8
Accumulated amortization, beginning balance	(1,051.2)
Net carrying amount, beginning balance	793.6
Amortization expense	(31.8)	$ (31.9)
Gross carrying amount, ending balance	1,844.8
Accumulated amortization, ending balance	(1,083.0)
Net carrying amount, ending balance	$ 761.8