Condensed Consolidated Statement of Changes in Stockholders' Equity (unaudited) - 6 months ended Jun. 30, 2017 - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Earnings [Member]	Treasury Stock [Member]	Total
Balances at Dec. 31, 2016	$ 1,036	$ 1,489,067	$ 4,642,402	$ (324,739)	$ (18,901)	$ 5,788,865
Net earnings	0	0	337,627	0	0	337,627
Stock option exercises	3	26,897	0	0	0	26,900
Treasury stock sold	0	1,941	0	0	104	2,045
Currency translation adjustments, net of tax	0	0	0	79,927	0	79,927
Stock based compensation	0	42,850	0	0	0	42,850
Restricted stock activity	2	(6,193)	0	0	0	(6,191)
Dividends declared	0	0	(71,537)	0	0	(71,537)
Balances at Jun. 30, 2017	$ 1,041	$ 1,554,562	$ 4,908,492	$ (244,812)	$ (18,797)	$ 6,200,486