Debt and Credit Facility - Summary of Senior Notes (Details) - Senior Notes - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Total debt	$ 1,050.0	$ 1,050.0
Unamortized issuance costs	(11.3)	(12.7)
Total carrying amount	$ 1,038.7	1,037.3
4.50% Senior Notes
Debt Instrument [Line Items]
Issuance Date	May 31, 2021
Debt Instrument, Maturity Date	Jun. 30, 2031
Effective interest rate (percent)	4.70%
Total debt	$ 550.0	550.0
5.875% Senior Notes
Debt Instrument [Line Items]
Issuance Date	Nov. 30, 2025
Debt Instrument, Maturity Date	Mar. 31, 2034
Effective interest rate (percent)	6.10%
Total debt	$ 500.0	$ 500.0

Face (par) amount of debt instrument at time of issuance.

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