CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY AND NONCONTROLLING INTERESTS - USD ($) $ in Millions		Total	Common stock Common Class A	Common stock Common Class B	Common stock Exchangeable Class A	Common stock Exchangeable Class B	Paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Common stock held in treasury Class B	Noncontrolling interest	[1]
Beginning balance at Dec. 31, 2022		$ 12,915.2	$ 0.0	$ 2.1	$ 102.2	$ 413.3	$ 7,006.4	$ 6,894.1	$ (1,205.5)	$ (522.9)	$ 225.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchange of shares		0.0			(1.4)	(57.3)	58.7
Shares issued under equity compensation plan		0.6					0.6
Amortization of share-based compensation		34.1					34.1
Deconsolidation of VIE		(8.8)									(8.8)
Net income (loss) including noncontrolling interests		851.2						845.6			5.6
Other comprehensive income (loss), net of tax		7.0							6.9		0.1
Share repurchase program		(61.2)								(61.2)
Contributions from noncontrolling interests		2.4									2.4
Distributions and dividends to noncontrolling interests		(11.0)									(11.0)
Dividends declared		(269.7)						(269.7)
Ending balance at Sep. 30, 2023		13,459.8	0.0	2.1	100.8	356.0	7,099.8	7,470.0	(1,198.6)	(584.1)	213.8
Beginning balance at Jun. 30, 2023		13,256.9	0.0	2.1	102.2	380.7	7,059.5	7,129.3	(1,093.4)	(549.6)	226.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchange of shares		0.0			(1.4)	(24.7)	26.1
Shares issued under equity compensation plan		0.4					0.4
Amortization of share-based compensation		13.8					13.8
Deconsolidation of VIE		(8.8)									(8.8)
Net income (loss) including noncontrolling interests		431.9						430.7			1.2
Other comprehensive income (loss), net of tax		(105.9)							(105.2)		(0.7)
Share repurchase program		(34.5)								(34.5)
Distributions and dividends to noncontrolling interests		(4.0)									(4.0)
Dividends declared		(90.0)						(90.0)
Ending balance at Sep. 30, 2023		13,459.8	0.0	2.1	100.8	356.0	7,099.8	7,470.0	(1,198.6)	(584.1)	213.8
Beginning balance at Dec. 31, 2023		13,407.2	0.0	2.1	100.8	352.3	7,108.4	7,484.3	(1,116.3)	(735.6)	211.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchange of shares		0.0				(81.2)	81.2
Shares issued under equity compensation plan		(13.3)					(13.3)
Amortization of share-based compensation		34.6					34.6
Purchase of noncontrolling interest		(0.1)					0.1				(0.2)
Net income (loss) including noncontrolling interests		865.7						834.6			31.1
Other comprehensive income (loss), net of tax		12.7							12.7		0.0
Share repurchase program		(437.2)								(437.2)
Contributions from noncontrolling interests		2.7									2.7
Distributions and dividends to noncontrolling interests		(2.8)									(2.8)
Reclassification of mandatorily redeemable noncontrolling interest to accounts payable and other current liabilities		(49.2)									(45.7)
Reclassification of noncontrolling interests to redeemable noncontrolling interests	[1]	(16.1)
Dividends declared		(278.7)						(278.7)
Ending balance at Sep. 30, 2024		13,525.5	0.0	2.1	100.8	271.1	7,211.0	8,040.2	(1,107.1)	(1,172.8)	180.2
Beginning balance at Jun. 30, 2024		13,389.0	0.0	2.1	100.8	352.3	7,119.4	7,932.4	(1,217.3)	(1,110.1)	209.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchange of shares		0.0				(81.2)	81.2
Shares issued under equity compensation plan		(0.1)					(0.1)
Amortization of share-based compensation		10.4					10.4
Purchase of noncontrolling interest		0.0					0.1				(0.1)
Net income (loss) including noncontrolling interests		229.5						199.8			29.7
Other comprehensive income (loss), net of tax		114.0							113.7		0.3
Share repurchase program		(62.7)								(62.7)
Contributions from noncontrolling interests		2.7									2.7
Reclassification of mandatorily redeemable noncontrolling interest to accounts payable and other current liabilities		(49.2)							(3.5)		(45.7)
Reclassification of noncontrolling interests to redeemable noncontrolling interests		(16.1)									(16.1)
Dividends declared		(92.0)						(92.0)
Ending balance at Sep. 30, 2024		$ 13,525.5	$ 0.0	$ 2.1	$ 100.8	$ 271.1	$ 7,211.0	$ 8,040.2	$ (1,107.1)	$ (1,172.8)	$ 180.2

[1] All activity included in the noncontrolling interests column of the unaudited condensed consolidated statements of stockholder's equity and noncontrolling interests excludes activity from our redeemable noncontrolling interest.