Components of Equity (Tables)

9 Months Ended

Sep. 30, 2017

Stockholders' Equity Note [Abstract]

Schedule of Components of Equity Disclosure

The components of equity for the nine months ended September 30,2017 and 2016 are as follows:

	Shareholders’ equity			Noncontrolling interest		Total equity
Balance at December 31, 2016	$	1,844,638		2,575		1,847,213
Exercise of stock options	134,014			—		134,014
Issuance of shares under stock purchase plan	28,767			—		28,767
Shares repurchased under provisions of stock repurchase plans	(340,736		)	—		(340,736	)
Stock compensation expense	39,036			—		39,036
Net earnings	322,378			550		322,928
Other comprehensive income (loss)	25,632			(47	)	25,585
Dividends paid ($0.42 per share)	(75,726		)	—		(75,726	)
Balance at September 30, 2017	$	1,978,003		3,078		1,981,081
Balance at December 31, 2015	$	1,691,993		2,683		1,694,676
Exercise of stock options	119,509			—		119,509
Issuance of shares under stock purchase plan	28,136					28,136
Shares repurchased under provisions of stock repurchase plans	(268,097		)	—		(268,097	)
Stock compensation expense	34,264			—		34,264
Tax benefits from stock plans, net	(2,533		)	—		(2,533	)
Net earnings	320,217			1,218		321,435
Other comprehensive loss	(406		)	(51	)	(457	)
Dividends paid ($0.40 per share)	(73,000		)	—		(73,000	)
Balance at September 30, 2016	$	1,850,083		3,850		1,853,933