Debt - Schedule of the Change in Debt under the Kudu Facility (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument
Beginning balance	$ 575.2
Borrowings	12.4	$ 213.8	$ 401.7
Repayments	(25.7)	(56.7)	(120.1)
Ending balance	564.6	575.2
Kudu Credit Facility
Debt Instrument
Beginning balance	208.3
Ending balance	203.8	208.3
Kudu Credit Facility | Secured Debt
Debt Instrument
Beginning balance	215.2	225.4	0.0
Borrowings	12.0	35.0	232.0
Repayments	(16.9)	(45.2)	(6.6)
Ending balance	$ 210.3	$ 215.2	$ 225.4