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Debt - Schedule of Debt (Details) - USD ($)	Sep. 30, 2024	Apr. 16, 2024	Apr. 02, 2024	Mar. 12, 2024	Dec. 31, 2023	Feb. 09, 2021	Dec. 01, 2020
Debt Instrument [Line Items]
Amount	$ 2,454,500,000				$ 2,892,500,000
Unamortized debt issuance costs, debt premium, and debt discount	355,000,000.0				(29,900,000)
Total debt	2,809,500,000				2,862,600,000
Less: current portion of debt	(27,100,000)				(23,000,000.0)
Debt, excluding current portion	2,782,400,000				$ 2,839,600,000
Line of credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Amount	$ 0
FLSO Term Loan Facility \| Term loan facility
Debt Instrument [Line Items]
Interest Rate	7.98%				0.00%
Amount	$ 1,631,100,000				$ 0
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	11.48%			1.00%	0.00%
Amount	$ 273,600,000				$ 0
Term Loan Facility \| Term loan facility
Debt Instrument [Line Items]
Interest Rate	7.98%				8.23%
Amount	$ 61,900,000				$ 2,181,200,000
Senior Facilities \| Term loan facility
Debt Instrument [Line Items]
Amount					2,181,200,000
Senior Facilities \| Line of credit \| New Revolving Credit Facility
Debt Instrument [Line Items]
Amount	0
3.50% FLSO Senior Secured Notes \| Senior notes
Debt Instrument [Line Items]
Amount	$ 318,600,000	$ 3,600,000	$ 93,300,000
Interest rate	3.50%			3.50%		3.50%
3.50% Senior Secured Notes \| Senior notes
Debt Instrument [Line Items]
Amount	$ 43,900,000				$ 513,700,000
Interest rate	3.50%			3.50%	3.50%	3.50%
5.375% Senior Notes \| Senior notes
Debt Instrument [Line Items]
Amount	$ 125,400,000				$ 197,600,000
Interest rate	5.375%				5.375%		5.375%