Debt and Credit Facility - Summary of Senior Notes (Details) - Senior Notes - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Total debt	$ 1,050.0	$ 1,050.0
Unamortized issuance costs	(8.8)	(10.2)
Total carrying amount	$ 1,041.2	1,039.8
4.50% Senior Notes
Debt Instrument [Line Items]
Issuance Date	May 21, 2021
Debt Instrument, Maturity Date	Jun. 30, 2031
Effective interest rate (percent)	4.70%
Total debt	$ 550.0	550.0
4.625% Senior Notes
Debt Instrument [Line Items]
Issuance Date	Nov. 30, 2019
Debt Instrument, Maturity Date	Mar. 31, 2028
Effective interest rate (percent)	4.80%
Total debt	$ 500.0	$ 500.0