Other Assets and Liabilities - Other Accrued and Current Liabilities (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Other Assets and Other Liabilities [Abstract]
Accrued operating costs	$ 89.8	$ 122.1
Accrued interest expense	10.2	4.3
Short-term lease liability	15.0	17.7
Accrued income tax	18.2	13.2
Accrued liability related to the purchase of non-controlling interest	0.0	93.7
Other accrued liabilities	46.0	65.8
Total	179.2	$ 316.8
Foreign exchange gain (loss)	$ (2.6)