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, 2020	$ 6,232.7	$ 193.7	$ 4,264.4	$ 2,371.7	$ (643.6)	$ 46.5
Beginning balance (in shares) at Dec. 31, 2020		193.7
Net earnings	393.7			382.1		11.6
Dividends paid to noncontrolling interests	(10.3)					(10.3)
Net change in pension asset/liability, net of taxes	1.0				1.0
Foreign currency translation	58.6				58.0	0.6
Change in fair value of derivative instruments, net of taxes	56.8				56.8
Compensation expense related to stock option plan grants	3.7		3.7
Common stock issued in: Five purchase transactions	67.5	$ 0.6	66.9
Common stock issued in: Five purchase transactions (in shares)		0.6
Stock option plans	30.2	$ 0.6	29.6
Stock option plans (in shares)		0.6
Employee stock purchase plan	7.0	$ 0.1	6.9
Employee stock purchase plan (in shares)		0.1
Shares issued to benefit plans	71.4	$ 0.6	70.8
Shares issued to benefit plans (in shares)		0.6
Deferred compensation and restricted stock	(37.9)	$ 0.3	(38.2)
Deferred compensation and restricted (in shares)		0.3
Cash dividends declared on common stock	(94.9)			(94.9)
Ending balance at Mar. 31, 2021	6,779.5	$ 195.9	4,404.1	2,658.9	(527.8)	48.4
Ending balance, (in shares) at Mar. 31, 2021		195.9
Beginning balance at Dec. 31, 2021	$ 8,560.1	$ 208.5	6,143.7	2,882.3	(726.1)	51.7
Beginning balance (in shares) at Dec. 31, 2021	208.5	208.5
Net earnings	$ 439.1			438.7		0.4
Net purchase of subsidiary shares from noncontrolling interests	2.1					2.1
Dividends paid to noncontrolling interests	(0.6)					(0.6)
Net change in pension asset/liability, net of taxes	0.3				0.3
Foreign currency translation	15.0				14.9	0.1
Change in fair value of derivative instruments, net of taxes	45.2				45.2
Compensation expense related to stock option plan grants	5.7		5.7
Stock option plans	$ 37.8	$ 0.7	37.1
Stock option plans (in shares)	0.7	0.7
Employee stock purchase plan	$ 8.1	$ 0.1	8.0
Employee stock purchase plan (in shares)		0.1
Shares issued to benefit plans	74.4	$ 0.5	73.9
Shares issued to benefit plans (in shares)		0.5
Deferred compensation and restricted stock	(36.1)	$ 0.3	(36.4)
Deferred compensation and restricted (in shares)		0.3
Cash dividends declared on common stock	(108.0)			(108.0)
Ending balance at Mar. 31, 2022	$ 9,043.1	$ 210.1	$ 6,232.0	$ 3,213.0	$ (665.7)	$ 53.7
Ending balance, (in shares) at Mar. 31, 2022	210.1	210.1