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Debt and Credit Facility - Summary of Interest Expense Relating to Senior Notes and Revolving Credit Facility (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |  |
Interest expense on finance lease liabilities | $ 0.7 | $ 0.3 | $ 0.3
Total interest expense | 46.9 | 48.3 | 49.5
Senior Notes and Revolving Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense on finance lease liabilities | 0.7 | 0.3 | 0.3
Interest expense capitalized as construction in progress | (6.4) | (3.6) | (1.2)
Total interest expense | 46.9 | 48.3 | 49.5
Revolving Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Revolving Credit Facility interest expense, including commitment fees and finance cost amortization | 3.0 | 2.0 | 1.4
Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior Notes interest expense, including debt issuance cost amortization | $ 49.6 | $ 49.6 | $ 49.0

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