Condensed Consolidated Statements of Changes in Temporary Equity and Stockholders' Equity - USD ($) $ in Millions	Total	Senior A Senior Preferred Shares	Redeemable non- controlling interest	Preferred Dividends on Series A Senior Preferred Shares	Common stock	Additional paid-In capital	Retained earnings	Retained earnings Senior A Senior Preferred Shares	Retained earnings Preferred Dividends on Series A Senior Preferred Shares	Accumulated other comprehensive loss	Non- controlling interest
Beginning balance (in shares) at Dec. 31, 2022		0
Beginning balance at Dec. 31, 2022		$ 0.0	$ 0.0
Increase (Decrease) in Temporary Equity
Net income (loss)			(0.4)
Total comprehensive (loss)			(0.4)
Non-controlling interest acquired in business combination			8.9
Issuance of Series A Senior Preferred Shares and common stock, net of issuance costs (in shares)		485,000,000
Issuance of Series A Senior Preferred Shares and common stock, net of issuance costs		$ 482.0
Ending balance (in shares) at Sep. 30, 2023		485,000,000
Ending balance at Sep. 30, 2023		$ 482.0	8.5
Beginning balance (in shares) at Dec. 31, 2022					110,881,363
Beginning balance at Dec. 31, 2022	$ 1,290.2				$ 246.3	$ 85.3	$ 1,043.2			$ (85.1)	$ 0.5
Increase (Decrease) in Equity
Net income (loss)	122.2						122.2
Other comprehensive income (loss)	1.6									1.6
Comprehensive income (loss)	123.8						122.2			1.6
Stock option exercises (in shares)					351,349
Stock option exercises	15.6				$ 19.4	(3.8)
Issuance of common stock related to vesting of share units (in shares)					426,254
Issuance of common stock related to vesting of share units	(17.7)				$ 15.9	(33.6)
Issuance of common stock related to business combination (in shares)					70,339,723
Issuance of common stock related to business combination	3,713.2				$ 3,713.2
Share-based continuing employment costs related to business combinations	2.3				$ 0.9	1.4
Replacement of share-based awards in business combination	13.1					13.1
Share-based payments expense	28.5					28.5
Equity-classified share units dividend equivalents	0.0					1.2	(1.2)
Non-controlling interest acquired in business combination	1.8										1.8
Issuance of Series A Senior Preferred Shares and common stock, net of issuance costs (in shares)					251,163
Issuance of Series A Senior Preferred Shares and common stock, net of issuance costs	15.0				$ 15.0
Dividends on Series A Senior Preferred Shares		$ (5.4)		$ (17.6)				$ (5.4)	$ (17.6)
Dividends paid to common stockholders	(248.7)
Ending balance (in shares) at Sep. 30, 2023					182,249,852
Ending balance at Sep. 30, 2023	4,914.1				$ 4,010.7	92.1	892.5			(83.5)	2.3
Beginning balance (in shares) at Jun. 30, 2023		485,000,000
Beginning balance at Jun. 30, 2023		$ 482.0	8.7
Increase (Decrease) in Temporary Equity
Net income (loss)			(0.2)
Total comprehensive (loss)			(0.2)
Ending balance (in shares) at Sep. 30, 2023		485,000,000
Ending balance at Sep. 30, 2023		$ 482.0	8.5
Beginning balance (in shares) at Jun. 30, 2023					181,983,976
Beginning balance at Jun. 30, 2023	4,922.1				$ 3,995.1	89.7	887.1			(52.1)	2.3
Increase (Decrease) in Equity
Net income (loss)	63.4						63.4
Other comprehensive income (loss)	(31.4)									(31.4)
Comprehensive income (loss)	32.0						63.4			(31.4)
Stock option exercises (in shares)					250,275
Stock option exercises	11.6				$ 14.5	(2.9)
Issuance of common stock related to vesting of share units (in shares)					15,601
Issuance of common stock related to vesting of share units	(0.5)				$ 0.8	(1.3)
Share-based continuing employment costs related to business combinations	0.7				$ 0.3	0.4
Share-based payments expense	5.9					5.9
Equity-classified share units dividend equivalents	0.0					0.3	(0.3)
Dividends on Series A Senior Preferred Shares		$ (1.8)		(6.7)				(1.8)	(6.7)
Dividends paid to common stockholders	(49.2)
Ending balance (in shares) at Sep. 30, 2023					182,249,852
Ending balance at Sep. 30, 2023	$ 4,914.1				$ 4,010.7	92.1	892.5			(83.5)	2.3
Beginning balance (in shares) at Dec. 31, 2023	485,000,000	485,000,000
Beginning balance at Dec. 31, 2023		$ 482.0	8.4
Increase (Decrease) in Temporary Equity
Net income (loss)			(0.2)
Total comprehensive (loss)			(0.2)
Ending balance (in shares) at Sep. 30, 2024	485,000,000	485,000,000
Ending balance at Sep. 30, 2024		$ 482.0	8.2
Beginning balance (in shares) at Dec. 31, 2023					182,843,942
Beginning balance at Dec. 31, 2023	$ 5,019.0				$ 4,054.2	88.0	918.5			(44.0)	2.3
Increase (Decrease) in Equity
Net income (loss)	294.6						294.6
Other comprehensive income (loss)	(6.9)									(7.0)	0.1
Comprehensive income (loss)	287.7						294.6			(7.0)	0.1
Stock option exercises (in shares)					979,266
Stock option exercises	44.5				$ 56.0	(11.5)
Issuance of common stock related to vesting of share units (in shares)					331,847
Issuance of common stock related to vesting of share units	(15.6)				$ 14.0	(29.6)
Issuance of common stock related to ESPP (in shares)					257,051
Issuance of common stock related to ESPP	13.1				$ 16.3	(3.2)
Share-based continuing employment costs related to business combinations (in shares)					(4,421)
Share-based continuing employment costs related to business combinations	(0.2)					(0.2)
Share-based payments expense	41.0					41.0
Equity-classified share units dividend equivalents	0.0					0.7	(0.7)
Dividends on Series A Senior Preferred Shares		$ (5.5)		(20.1)				(5.5)	(20.1)
Dividends paid to common stockholders	(152.4)
Ending balance (in shares) at Sep. 30, 2024					184,407,685
Ending balance at Sep. 30, 2024	$ 5,211.5				$ 4,140.5	85.2	1,034.4			(51.0)	2.4
Beginning balance (in shares) at Jun. 30, 2024		485,000,000
Beginning balance at Jun. 30, 2024		$ 482.0	8.3
Increase (Decrease) in Temporary Equity
Net income (loss)			(0.1)
Total comprehensive (loss)			(0.1)
Ending balance (in shares) at Sep. 30, 2024	485,000,000	485,000,000
Ending balance at Sep. 30, 2024		$ 482.0	$ 8.2
Beginning balance (in shares) at Jun. 30, 2024					184,238,275
Beginning balance at Jun. 30, 2024	$ 5,157.6				$ 4,132.7	81.9	1,020.2			(79.5)	2.3
Increase (Decrease) in Equity
Net income (loss)	76.1						76.1
Other comprehensive income (loss)	28.6									28.5	0.1
Comprehensive income (loss)	104.7						76.1			28.5	0.1
Stock option exercises (in shares)					116,508
Stock option exercises	5.7				$ 6.9	(1.2)
Issuance of common stock related to vesting of share units (in shares)					52,902
Issuance of common stock related to vesting of share units	(3.4)				$ 0.9	(4.3)
Share-based payments expense	9.1					9.1
Equity-classified share units dividend equivalents	0.0					(0.3)	0.3
Dividends on Series A Senior Preferred Shares		$ (2.0)		$ (6.7)				$ (2.0)	$ (6.7)
Dividends paid to common stockholders	(53.5)						(53.5)
Ending balance (in shares) at Sep. 30, 2024					184,407,685
Ending balance at Sep. 30, 2024	$ 5,211.5				$ 4,140.5	$ 85.2	$ 1,034.4			$ (51.0)	$ 2.4