Related Party Transactions (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Related Party Transaction [Line Items]
Selling, general and administrative expenses	[1]	$ 149.2	$ 135.0	$ 452.8	$ 382.9
Outstanding amount		381.9		381.9		$ 260.1
Related Party | Support from Holdings
Related Party Transaction [Line Items]
Selling, general and administrative expenses		0.0	$ 4.0	10.7	$ 12.3
Outstanding amount		0.0		0.0		$ 0.0
Related Party | Transition Service Agreement
Related Party Transaction [Line Items]
Selling, general and administrative expenses		0.9		1.4
Outstanding amount		$ 0.0		$ 0.0

[1] Inclusive of equity appreciation rights expense of $11.3 and $5.3 for the three months ended September 30, 2026 and 2025, respectively, and $38.0 and $32.6 for the nine months ended September 30, 2026 and 2025, respectively.