Condensed Consolidated Statement of Changes in Stockholders' Equity (unaudited) - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands	Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive loss	Treasury stock
Balances at December 31, 2016 at Dec. 31, 2016	$ 5,788,865	$ 1,036	$ 1,489,067	$ 4,642,402	$ (324,739)	$ (18,901)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	527,900	0	0	527,900	0	0
Stock option exercises	40,401	4	40,397	0	0	0
Treasury stock sold	3,194	0	3,040	0	0	154
Currency translation adjustments	147,462	0	0	0	147,462	0
Stock based compensation	66,010	0	66,010	0	0	0
Restricted stock activity	(7,472)	3	(7,475)	0	0	0
Dividends declared	(107,376)	0	0	(107,376)	0	0
Balances at September 30, 2017 at Sep. 30, 2017	$ 6,458,984	$ 1,043	$ 1,591,039	$ 5,062,926	$ (177,277)	$ (18,747)