Debt - Component of Debt (Detail) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Unamortized original issue discount and debt issuance costs	$ (33.0)	$ (35.4)
Debt	6,857.0	7,009.6
Less: current portion of long-term debt	20.0	20.0
Long-term debt	6,837.0	6,989.6
Secured Debt \| Senior Secured Credit Facilities
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	4,140.0	4,295.0
Senior Notes \| 5.5% Senior Notes due 2027
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	2,000.0	2,000.0
Senior Notes \| 6.5% senior notes due 2032
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	$ 750.0	$ 750.0

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.

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