Consolidated Statements of Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Shareholders’ Equity	Noncontrolling Interests
Beginning Balance at Dec. 31, 2019			$ 760.9	$ 7,806.3	$ (1,197.6)	$ (4,560.3)		$ 519.8
Net Income (Loss)	$ 257.4			234.0				23.4
Other comprehensive income (loss)	(282.1)				(259.0)			(23.1)
Dividends to noncontrolling interests								(35.2)
Acquisition of noncontrolling interests			9.9					(36.5)
Increase in noncontrolling interests from business combinations								0.0
Change in temporary equity			20.6
Common stock dividends declared				(281.0)
Share-based compensation			34.9
Stock issued, share-based compensation			(25.1)			30.0
Common stock repurchased						(205.2)
Ending Balance at Jun. 30, 2020	$ 2,861.4	$ 44.6	801.2	7,759.3	(1,456.6)	(4,735.5)	$ 2,413.0	448.4
Dividends Declared Per Common Share	$ 1.30
Beginning Balance at Mar. 31, 2020			755.8	7,924.5	(1,528.3)	(4,749.0)		477.0
Net Income (Loss)	$ (14.4)			(24.2)				9.8
Other comprehensive income (loss)	85.9				71.7			14.2
Dividends to noncontrolling interests								(24.8)
Acquisition of noncontrolling interests			17.6					(27.8)
Increase in noncontrolling interests from business combinations								0.0
Change in temporary equity			28.8
Common stock dividends declared				(141.0)
Share-based compensation			16.2
Stock issued, share-based compensation			(17.2)			18.7
Common stock repurchased						(5.2)
Ending Balance at Jun. 30, 2020	$ 2,861.4	$ 44.6	801.2	7,759.3	(1,456.6)	(4,735.5)	2,413.0	448.4
Dividends Declared Per Common Share	$ 0.65
Common Stock, shares issued		297.2
Beginning Balance at Dec. 31, 2020	$ 3,576.9		747.8	8,190.6	(1,213.8)	(4,684.8)		492.5
Net Income (Loss)	677.5			636.0				41.5
Other comprehensive income (loss)	18.8				26.3			(7.5)
Dividends to noncontrolling interests								(38.6)
Acquisition of noncontrolling interests			25.9					(37.1)
Increase in noncontrolling interests from business combinations								37.3
Change in temporary equity			(67.0)
Common stock dividends declared				(302.9)
Share-based compensation			39.1
Stock issued, share-based compensation			(10.4)			19.5
Common stock repurchased						(102.1)
Ending Balance at Jun. 30, 2021	$ 3,836.9	$ 44.6	735.4	8,523.7	(1,187.5)	(4,767.4)	3,348.8	488.1
Dividends Declared Per Common Share	$ 1.40
Beginning Balance at Mar. 31, 2021			769.7	8,327.5	(1,246.2)	(4,684.4)		480.5
Net Income (Loss)	$ 371.6			348.2				23.4
Other comprehensive income (loss)	62.0				58.7			3.3
Dividends to noncontrolling interests								(25.0)
Acquisition of noncontrolling interests			24.9					(31.4)
Increase in noncontrolling interests from business combinations								37.3
Change in temporary equity			(64.2)
Common stock dividends declared				(152.0)
Share-based compensation			18.3
Stock issued, share-based compensation			(13.3)			18.4
Common stock repurchased						(101.4)
Ending Balance at Jun. 30, 2021	$ 3,836.9	$ 44.6	$ 735.4	$ 8,523.7	$ (1,187.5)	$ (4,767.4)	$ 3,348.8	$ 488.1
Dividends Declared Per Common Share	$ 0.70
Common Stock, shares issued		297.2