Consolidated Statements of Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Retained Earnings Cumulative effect of accounting changes	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Cumulative effect of accounting changes	Treasury Stock	Shareholders’ Equity	Noncontrolling Interests	Noncontrolling Interests Cumulative effect of accounting changes
Shareholders’ Equity			$ 828.3	$ 6,210.6	$ 23.6	$ (963.0)	$ 0.0	$ (3,505.4)		$ 537.1	$ 0.4
Beginning balance at Dec. 31, 2017			828.3	6,210.6	23.6	(963.0)	0.0	(3,505.4)		537.1	0.4
Shareholders’ Equity	$ 3,106.9	$ 44.6	828.3	7,016.1	23.6	(1,228.5)	0.0	(4,013.9)	$ 2,547.1	537.1	0.4
Net income	1,440.5			1,326.4						114.1
Other comprehensive income (loss)	(295.7)					(265.5)				(30.2)
Dividends to noncontrolling interests										(134.9)
Acquisition of noncontrolling interests			(39.7)							(42.3)
Increase in noncontrolling interests from business combinations										115.6
Change in temporary equity			(71.1)
Common stock dividends declared				(544.5)
Share-based compensation			70.5
Stock issued, share-based compensation			(59.2)					72.8
Common stock repurchased								(581.3)
Ending balance at Dec. 31, 2018	$ 3,106.9	$ 44.6	728.8	7,016.1	22.3	(1,228.5)	(22.3)	(4,013.9)	2,547.1	559.8	0.0
Dividends Declared Per Common Share	$ 2.40
Common Stock, shares		297.2
Shareholders’ Equity	$ 3,106.9	$ 44.6	728.8	7,016.1	22.3	(1,228.5)	(22.3)	(4,013.9)	2,547.1	559.8	0.0
Shareholders’ Equity	3,106.9	44.6	760.9	7,016.1	22.3	(1,228.5)	(22.3)	(4,013.9)	2,547.1	519.8	0.0
Net income	1,435.9			1,339.1						96.8
Other comprehensive income (loss)	52.7					53.2				(0.5)
Dividends to noncontrolling interests										(97.3)
Acquisition of noncontrolling interests			(22.3)							(54.4)
Increase in noncontrolling interests from business combinations										15.4
Change in temporary equity			38.2
Common stock dividends declared				(571.2)
Share-based compensation			72.5
Stock issued, share-based compensation			(56.3)					63.8
Common stock repurchased								(610.2)
Ending balance at Dec. 31, 2019	$ 3,373.7	$ 44.6	760.9	7,806.3	0.0	(1,197.6)	0.0	(4,560.3)	2,853.9	519.8	0.0
Dividends Declared Per Common Share	$ 2.60
Common Stock, shares		297.2
Shareholders’ Equity	$ 3,373.7	$ 44.6	760.9	7,806.3	0.0	(1,197.6)	0.0	(4,560.3)	2,853.9	519.8	0.0
Shareholders’ Equity	3,576.9	44.6	760.9	8,190.6	$ 0.0	(1,213.8)	$ 0.0	(4,560.3)	2,853.9	519.8	$ 0.0
Net income	1,020.8			945.4						75.4
Other comprehensive income (loss)	(12.2)					(16.2)				4.1
Dividends to noncontrolling interests										(95.5)
Acquisition of noncontrolling interests			5.7							(42.0)
Increase in noncontrolling interests from business combinations										30.7
Change in temporary equity			3.3
Common stock dividends declared				(561.1)
Share-based compensation			71.0
Stock issued, share-based compensation			(93.1)					97.5
Common stock repurchased								(222.0)
Ending balance at Dec. 31, 2020	$ 3,576.9	$ 44.6	747.8	8,190.6		(1,213.8)		(4,684.8)	3,084.4	492.5
Dividends Declared Per Common Share	$ 2.60
Common Stock, shares		297.2
Shareholders’ Equity	$ 3,576.9	$ 44.6	$ 747.8	$ 8,190.6		$ (1,213.8)		$ (4,684.8)	$ 3,084.4	$ 492.5