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
Beginning balance at Dec. 31, 2021	$ 13,664.1	$ 0.0	$ 2.1	$ 102.2	$ 417.8	$ 6,970.9	$ 7,401.5	$ (1,006.0)	$ (471.4)	$ 247.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchange of shares					(0.6)	0.6
Shares issued under equity compensation plan	(4.4)					(4.4)
Amortization of share-based compensation	8.5					8.5
Net income (loss) including noncontrolling interests	137.3						151.5			(14.2)
Other comprehensive income (loss), net of tax	56.0							56.4		(0.4)
Share repurchase program	(14.1)								(14.1)
Contributions from noncontrolling interests	7.3									7.3
Distributions and dividends to noncontrolling interests	(1.0)									(1.0)
Dividends declared	(83.2)						(83.2)
Ending balance at Mar. 31, 2022	13,770.5	0.0	2.1	102.2	417.2	6,975.6	7,469.8	(949.6)	(485.5)	238.7
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