Debt - Schedule of Carrying Amounts and Fair Values of Debt (Detail) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Carrying Amount [Member] \| Senior Secured Credit Facilities
Financial liabilities:
Credit facility	$ 4,081.6	$ 4,268.6
Carrying Amount [Member] \| 5.5% Senior Notes due 2027
Financial liabilities:
Senior notes	1,998.4	1,998.1
Carrying Amount [Member] \| 6.5% senior notes due 2032
Financial liabilities:
Senior notes	743.4	742.9
Fair Value [Member] \| Senior Secured Credit Facilities
Financial liabilities:
Credit facility	4,133.5	4,315.6
Fair Value [Member] \| 5.5% Senior Notes due 2027
Financial liabilities:
Credit facility	2,004.5	1,984.2
Fair Value [Member] \| 6.5% senior notes due 2032
Financial liabilities:
Credit facility	$ 780.0	$ 758.0

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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+ Details