Condensed Consolidated Statements of Shareholder’s Equity (Deficit) and Noncontrolling Interests (Unaudited) - USD ($) $ in Millions	Total	IPO	Private Placement	Class A Common Stock	Class B Common Stock	Total Shareholders' Equity (Deficit)	Total Shareholders' Equity (Deficit) IPO	Total Shareholders' Equity (Deficit) Private Placement	Common Stock Class A Common Stock	Common Stock Class A Common Stock IPO	Common Stock Class A Common Stock Private Placement	Common Stock Class B Common Stock	Common Stock Class B Common Stock Private Placement	Additional Paid-In Capital	Additional Paid-In Capital IPO	Additional Paid-In Capital Private Placement	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest
Beginning balance (in shares) at Dec. 31, 2024									0			320,676,155
Beginning balance at Dec. 31, 2024	$ (92.5)					$ (58.1)			$ 0.0			$ 0.0		$ 0.0			$ (17.4)	$ (40.7)	$ (34.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contributions	157.5					157.5								157.5
Distributions	(12.8)					(12.8)								(12.8)
Net Income (loss)	122.2					104.8											104.8		17.4
Other comprehensive income (loss)	6.6					5.4												5.4	1.2
Ending balance (in shares) at Sep. 30, 2025									0			320,676,155
Ending balance at Sep. 30, 2025	181.0					196.8			$ 0.0			$ 0.0		144.7			87.4	(35.3)	(15.8)
Beginning balance at Dec. 31, 2024	437.2
Redeemable Noncontrolling Interest
Net Income (loss)	11.6
Other comprehensive income (loss)	0.2
Contributions from noncontrolling interests	6.2
Redemptions of noncontrolling interests	(0.2)
Equity value attributable to noncontrolling interests in business acquisition	217.3
Ending balance at Sep. 30, 2025	672.3
Beginning balance (in shares) at Jun. 30, 2025									0			320,676,155
Beginning balance at Jun. 30, 2025	136.0					157.7			$ 0.0			$ 0.0		143.6			42.6	(28.5)	(21.7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions	1.1					1.1								1.1
Net Income (loss)	51.5					44.8											44.8		6.7
Other comprehensive income (loss)	(7.6)					(6.8)												(6.8)	(0.8)
Ending balance (in shares) at Sep. 30, 2025									0			320,676,155
Ending balance at Sep. 30, 2025	181.0					196.8			$ 0.0			$ 0.0		144.7			87.4	(35.3)	(15.8)
Beginning balance at Jun. 30, 2025	666.9
Redeemable Noncontrolling Interest
Net Income (loss)	5.3
Other comprehensive income (loss)	(0.6)
Contributions from noncontrolling interests	0.7
Redemptions of noncontrolling interests	0.0
Equity value attributable to noncontrolling interests in business acquisition	0.0
Ending balance at Sep. 30, 2025	672.3
Beginning balance (in shares) at Dec. 31, 2025				0	320,676,155				0			320,676,155
Beginning balance at Dec. 31, 2025	82.1					(37.0)			$ 0.0			$ 0.0		0.0			(6.3)	(30.7)	119.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions	44.1					44.1								44.1
Net Income (loss)	216.0					210.2											210.2		5.8
Other comprehensive income (loss)	2.0					1.6													0.4
Increased value of redeemable noncontrolling interests	(1.5)					(1.5)								(1.5)
Issuance of stock (in shares)										95,096,154	90,108,130		3,703,704
Issuance of stock		$ 2,475.0	$ 2,317.4				$ 2,475.0	$ 2,317.4							$ 2,475.0	$ 2,317.4
Remeasurement and exchange of noncontrolling interests for Class A common stock (in shares)									81,791,959
Remeasurement and exchange of noncontrolling interests for Class A common stock	887.8					1,025.2								1,028.0				(2.8)	(137.4)
Tax attribution to Holdings from reorganization transaction	(69.7)					(69.7)								(69.7)
Equity Appreciation Rights expense	34.7					22.6								22.6					12.1
Issuance of Class A common stock upon vesting of EAR units (in shares)									675,372
Net share settlement of EAR awards	(18.8)					(18.8)								(18.8)
Ending balance (in shares) at Sep. 30, 2026				267,671,615	324,379,859				267,671,615			324,379,859
Ending balance at Sep. 30, 2026	5,969.1					5,969.1			$ 0.0			$ 0.0		5,797.1			203.9	(31.9)	0.0
Beginning balance at Dec. 31, 2025	882.9
Redeemable Noncontrolling Interest
Net Income (loss)	4.9
Other comprehensive income (loss)	(0.6)
Increased value of redeemable noncontrolling interests	1.5
Remeasurement and exchange of noncontrolling interests for Class A common stock	(887.8)
Ending balance at Sep. 30, 2026	0.9
Beginning balance (in shares) at Jun. 30, 2026									177,288,058			324,379,859
Beginning balance at Jun. 30, 2026	3,649.7					3,649.7			$ 0.0			$ 0.0		3,587.1			96.5	(33.9)	0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions	13.1					13.1								13.1
Net Income (loss)	107.4					107.4											107.4
Other comprehensive income (loss)	2.0					2.0
Issuance of stock (in shares)											90,108,130
Issuance of stock		$ (0.3)	$ 2,217.4				$ (0.3)	$ 2,217.4							$ (0.3)	$ 2,217.4
Tax attribution to Holdings from reorganization transaction	(28.6)					(28.6)								(28.6)
Equity Appreciation Rights expense	11.3					11.3								11.3
Issuance of Class A common stock upon vesting of EAR units (in shares)									275,427
Net share settlement of EAR awards	(2.9)					(2.9)								(2.9)
Ending balance (in shares) at Sep. 30, 2026				267,671,615	324,379,859				267,671,615			324,379,859
Ending balance at Sep. 30, 2026	5,969.1					$ 5,969.1			$ 0.0			$ 0.0		$ 5,797.1			$ 203.9	$ (31.9)	$ 0.0
Beginning balance at Jun. 30, 2026	0.9
Ending balance at Sep. 30, 2026	$ 0.9