Debt - Schedule of Debt (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024	Apr. 16, 2024	Apr. 02, 2024	Mar. 12, 2024	Feb. 09, 2021	Dec. 01, 2020
Debt Instrument [Line Items]
Amount	$ 2,499.3	$ 2,449.4
Unamortized debt issuance costs, debt premium, and debt discount	273.2	336.2
Total debt	2,772.5	2,785.6
Less: current portion of debt	(30.4)	(29.2)
Debt, excluding current portion	$ 2,742.1	$ 2,756.4
FLSO Term Loan Facility | Term loan facility
Debt Instrument [Line Items]
Interest Rate	7.04%	7.35%
Amount	$ 1,614.2	$ 1,626.8
FLSO Term Loan Facility | Senior notes
Debt Instrument [Line Items]
Interest Rate					3.50%
FLFO Term Loan Facility | Term loan facility
Debt Instrument [Line Items]
Interest Rate	10.54%	10.85%			1.00%
Amount	$ 270.9	$ 272.9
Term Loan Facility | Term loan facility
Debt Instrument [Line Items]
Interest Rate	7.01%	7.35%
Amount	$ 61.3	$ 61.8
New Revolving Credit Facility | Line of credit | Revolving Credit Facility
Debt Instrument [Line Items]
Interest Rate	7.38%	0.00%
Amount	$ 65.0	$ 0.0
3.50% FLSO Senior Secured Notes | Senior notes
Debt Instrument [Line Items]
Amount	$ 318.6	$ 318.6	$ 3.6	$ 93.3
Interest Rate	3.50%	3.50%			3.50%
3.50% Senior Secured Notes | Senior notes
Debt Instrument [Line Items]
Amount	$ 43.9	$ 43.9
Interest Rate	3.50%	3.50%			3.50%	3.50%
5.375% Senior Notes | Senior notes
Debt Instrument [Line Items]
Amount	$ 125.4	$ 125.4
Interest Rate	5.375%	5.375%					5.375%