Debt and Credit Facility - Summary of Interest Relating to Senior Notes and Revolving Credit Facility (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total interest expense	$ 48.3	$ 49.5	$ 40.9
Senior Notes and Revolving Credit Facility
Debt Instrument [Line Items]
Interest expense capitalized as construction in progress	(3.6)	(1.2)	(1.0)
Total interest expense	48.3	49.5	40.9
Revolving Credit Facility
Debt Instrument [Line Items]
Revolving Credit Facility commitment fees and finance cost amortization	2.3	1.7	1.7
Senior Notes
Debt Instrument [Line Items]
Senior Notes interest expense, including debt issuance cost amortization	$ 49.6	$ 49.0	$ 40.2