Consolidated Statement of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interests [Member]
Beginning Balance at Dec. 31, 2016	$ 3,775.5	$ 178.3	$ 3,265.5	$ 1,024.1	$ (756.6)	$ 64.2
Beginning Balance (in shares) at Dec. 31, 2016		178.3
Net earnings	516.9			481.3		35.6
Net purchase of subsidiary shares from noncontrolling interests	(2.1)					(2.1)
Dividends paid to noncontrolling interests	(34.4)					(34.4)
Net change in pension asset/liability, net of taxes	4.3				4.3
Foreign currency translation	181.7				180.9	0.8
Change in fair value of derivative instruments, net of taxes	16.0				16.0
Compensation expense related to stock option plan grants	17.3		17.3
Common stock issued in: purchase transactions	60.6	$ 1.0	59.6
Common stock issued in: purchase transactions (in shares)		1.0
Stock option plans	41.1	$ 1.3	39.8
Stock option plans (in shares)		1.3
Employee stock purchase plan	19.3	$ 0.4	18.9
Employee stock purchase plan (in shares)		0.4
Deferred compensation and restricted stock	4.8	$ 0.3	4.5
Deferred compensation and restricted stock (in shares)		0.3
Common stock repurchases	(17.7)	$ (0.3)	(17.4)
Common stock repurchases (in shares)		(0.3)
Cash dividends declared on common stock	(283.6)			(283.6)
Ending Balance at Dec. 31, 2017	4,299.7	$ 181.0	3,388.2	1,221.8	(555.4)	64.1
Ending Balance (in shares) at Dec. 31, 2017		181.0
Reclassification of the income tax effects within accumulated other comprehensive loss related to the Tax Act				6.6	(6.6)
Net earnings	675.9			633.5		42.4
Net purchase of subsidiary shares from noncontrolling interests	(0.7)		(5.0)			4.3
Dividends paid to noncontrolling interests	(38.0)					(38.0)
Net change in pension asset/liability, net of taxes	(10.3)				(10.3)
Foreign currency translation	(199.7)				(197.7)	(2.0)
Change in fair value of derivative instruments, net of taxes	(15.6)				(15.6)
Compensation expense related to stock option plan grants	13.7		13.7
Common stock issued in: purchase transactions	61.6	$ 0.8	60.8
Common stock issued in: purchase transactions (in shares)		0.8
Stock option plans	$ 58.6	$ 1.6	57.0
Stock option plans (in shares)	1.6	1.6
Employee stock purchase plan	$ 23.3	$ 0.4	22.9
Employee stock purchase plan (in shares)		0.4
Deferred compensation and restricted stock	15.8	$ 0.3	15.5
Deferred compensation and restricted stock (in shares)		0.3
Common stock repurchases	(11.3)	$ (0.1)	(11.2)
Common stock repurchases (in shares)		(0.1)
Cash dividends declared on common stock	(303.3)			(303.3)
Ending Balance at Dec. 31, 2018	4,569.7	$ 184.0	3,541.9	1,558.6	(785.6)	70.8
Ending Balance (in shares) at Dec. 31, 2018		184.0
Cumulative effects of adoption of lease and hedging accounting standards at Dec. 31, 2019	(2.4)			(2.2)	(0.2)
Net earnings	715.8			668.8		47.0
Net purchase of subsidiary shares from noncontrolling interests	(15.1)					(15.1)
Dividends paid to noncontrolling interests	(43.0)					(43.0)
Net change in pension asset/liability, net of taxes	4.7				4.7
Foreign currency translation	44.5				44.2	0.3
Change in fair value of derivative instruments, net of taxes	(22.7)				(22.7)
Compensation expense related to stock option plan grants	14.0		14.0
Common stock issued in: purchase transactions	168.0	$ 1.9	166.1
Common stock issued in: purchase transactions (in shares)		1.9
Stock option plans	$ 73.7	$ 1.8	71.9
Stock option plans (in shares)	1.9	1.8
Employee stock purchase plan	$ 27.5	$ 0.3	27.2
Employee stock purchase plan (in shares)		0.3
Deferred compensation and restricted stock	4.7	$ 0.1	4.6
Deferred compensation and restricted stock (in shares)		0.1
Cash dividends declared on common stock	(323.9)			(323.9)
Ending Balance at Dec. 31, 2019	$ 5,215.5	$ 188.1	$ 3,825.7	$ 1,901.3	$ (759.6)	$ 60.0
Ending Balance (in shares) at Dec. 31, 2019		188.1