Consolidated Statements of Changes in Equity - USD ($) shares in Millions, $ in Millions	Cumulative Effect, Period of Adoption, Adjustment Retained Earnings	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Treasury Stock	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests	Total
Balance at beginning of period at Dec. 31, 2018			$ 0.6	$ (55.0)	$ 1,432.9	$ 3,028.7	$ (390.2)	$ 47.2	$ 4,064.2
Balance (in shares) at Dec. 31, 2018			598.4
Balance (in shares) at Dec. 31, 2018				(1.3)
Increase (Decrease) In Shareholders' Equity
Net income						1,155.0		9.0	1,164.0
Other comprehensive income (loss)							(40.7)	(0.4)	(41.1)
Acquisitions resulting in noncontrolling interest								30.0	30.0
Purchase of noncontrolling interest					(23.4)			(14.6)	(38.0)
Distributions to shareholders of noncontrolling interests								(5.3)	(5.3)
Purchase of treasury stock				$ (601.7)					(601.7)
Purchase of treasury stock (in shares)				(13.1)
Retirement of treasury stock			$ 0.0	$ 514.1		(514.1)			0.0
Retirement of treasury stock (in shares)			(11.1)	11.1
Stock options exercised			$ 0.0	$ 71.8	210.5	(35.9)			246.4
Stock options exercised (in shares)			10.1	1.7
Dividends declared						(285.3)			(285.3)
Stock-based compensation expense					63.0				63.0
Balance at end of period (ASU 2016-13) at Dec. 31, 2019	$ (3.8)	$ (3.8)
Balance at end of period at Dec. 31, 2019			$ 0.6	$ (70.8)	1,683.0	3,348.4	(430.9)	65.9	4,596.2
Balance (in shares) at Dec. 31, 2019			597.4
Balance (in shares) at Dec. 31, 2019				(1.6)
Increase (Decrease) In Shareholders' Equity
Net income						1,203.4		9.9	1,213.3
Other comprehensive income (loss)							152.8	3.7	156.5
Acquisitions resulting in noncontrolling interest								0.3	0.3
Purchase of noncontrolling interest					(2.1)			(5.9)	(8.0)
Distributions to shareholders of noncontrolling interests								(6.9)	(6.9)
Purchase of treasury stock				$ (641.3)					(641.3)
Purchase of treasury stock (in shares)				(12.0)
Retirement of treasury stock			$ 0.0	$ 487.4		(487.4)			0.0
Retirement of treasury stock (in shares)			(9.3)	9.3
Stock options exercised			$ 0.0	$ 113.6	316.7	(45.2)			385.1
Stock options exercised (in shares)			12.6	2.3
Dividends declared						(310.0)			(310.0)
Stock-based compensation expense					70.5				70.5
Balance at end of period at Dec. 31, 2020			$ 0.6	$ (111.1)	2,068.1	3,705.4	(278.1)	67.0	$ 5,451.9
Balance (in shares) at Dec. 31, 2020			600.7						600.7
Balance (in shares) at Dec. 31, 2020				(2.0)
Increase (Decrease) In Shareholders' Equity
Net income						1,590.8		10.7	$ 1,601.5
Other comprehensive income (loss)							(8.4)	1.6	(6.8)
Acquisitions resulting in noncontrolling interest								1.8	1.8
Purchase of noncontrolling interest					4.1			(15.3)	(11.2)
Distributions to shareholders of noncontrolling interests								(7.7)	(7.7)
Purchase of treasury stock				$ (661.7)					(661.7)
Purchase of treasury stock (in shares)				(9.3)
Retirement of treasury stock			$ 0.0	$ 608.9		(608.9)			0.0
Retirement of treasury stock (in shares)			(8.6)	8.6
Stock options exercised			$ 0.0	$ 63.9	253.8	(28.7)			289.0
Stock options exercised (in shares)			8.6	1.1
Dividends declared						(379.7)			(379.7)
Stock-based compensation expense					83.0				83.0
Balance at end of period at Dec. 31, 2021			$ 0.6	$ (100.0)	$ 2,409.0	$ 4,278.9	$ (286.5)	$ 58.1	$ 6,360.1
Balance (in shares) at Dec. 31, 2021			600.7						600.7
Balance (in shares) at Dec. 31, 2021				(1.6)