Financial Instruments - Effect of Derivative Instruments on Consolidated Statement of Operations and Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of pre-tax net gain or (loss) recognized in OCI on derivative	$ 6.3	$ (14.5)
Interest rate swaps | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from accumulated OCI into income	21.2	14.3
Amount of gain or (loss) recognized in income on derivative	21.2	14.3
Cross-currency swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of pre-tax net gain or (loss) recognized in OCI on derivative	6.6	(3.3)
Cross-currency swaps | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from accumulated OCI into income	0.0	0.0
Amount of gain or (loss) recognized in income on derivative	0.0	0.0
Foreign exchange forward contracts | Non-operating income (expense) – net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in income on derivative	$ 1.0	$ 3.8