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					(15.6)	15.6
Shares issued under equity compensation plan	(6.2)					(6.2)
Amortization of share-based compensation	9.8					9.8
Net income (loss) including noncontrolling interests	73.2						72.5			0.7
Other comprehensive income (loss), net of tax	35.2							34.9		0.3
Share repurchase program	(14.6)								(14.6)
Distributions and dividends to noncontrolling interests	(4.0)									(4.0)
Dividends declared	(89.6)						(89.6)
Ending balance at Mar. 31, 2023	12,919.0	0.0	2.1	102.2	397.7	7,025.6	6,877.0	(1,170.6)	(537.5)	222.5
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]
Shares issued under equity compensation plan	(14.3)					(14.3)
Amortization of share-based compensation	12.8					12.8
Net income (loss) including noncontrolling interests	210.5						207.8			2.7
Other comprehensive income (loss), net of tax	(76.6)							(76.3)		(0.3)
Share repurchase program	(111.2)								(111.2)
Distributions and dividends to noncontrolling interests	(2.8)									(2.8)
Dividends declared	(94.7)						(94.7)
Ending balance at Mar. 31, 2024	$ 13,330.9	$ 0.0	$ 2.1	$ 100.8	$ 352.3	$ 7,106.9	$ 7,597.4	$ (1,192.6)	$ (846.8)	$ 210.8

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