Financial Instruments - Effect of Derivative Instruments on Consolidated Statement of Operations and Comprehensive Income (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Feb. 07, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from accumulated OCI into income	$ 0.0	$ (3.4)	$ (2.8)	$ (0.7)
Amount of gain (loss) recognized in income on derivatives	0.0	(3.4)	(2.8)	(0.7)
Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of pre-tax gain or (loss) recognized in OCI on derivative	0.0	11.1	0.9	(1.6)
Make-whole derivative liability | Non-operating income (expenses) – net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income on derivatives	0.0	0.0	(32.8)	(172.4)
Foreign exchange collar | Non-operating income (expenses) – net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income on derivatives	0.0	(2.5)	23.5	0.0
Foreign exchange forward contracts | Non-operating income (expenses) – net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income on derivatives	$ 1.8	$ 1.4	$ 9.0	$ (12.0)