Interim Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues	$ 753,866	$ 734,846	$ 2,164,684	$ 2,117,663
Gross profit	435,056	419,254	1,242,913	1,206,812
Research and development	36,015	34,838	108,650	104,866
Selling, general and administrative	202,826	202,451	612,466	611,149
Amortization	12,329	11,856	36,877	35,561
Interest expense	9,800	9,003	27,776	25,671
Restructuring Charges	6,732	2,222	11,146	13,956
Other charges (income), net	(2,005)	(1,479)	(4,253)	(5,795)
Earnings before taxes	169,359	160,363	450,251	421,404
Provision for taxes	39,964	33,710	81,891	89,979
Net earnings	$ 129,395	$ 126,653	$ 368,360	$ 331,425
Basic earnings per common share:
Net earnings	$ 5.28	$ 5.04	$ 14.93	$ 13.10
Weighted average number of common shares	24,487,268	25,126,061	24,677,546	25,296,680
Diluted earnings per common share:
Net earnings	$ 5.20	$ 4.93	$ 14.67	$ 12.81
Weighted average number of common and common equivalent shares	24,880,179	25,683,365	25,103,173	25,877,979
Comprehensive Income, Net of Tax (Note 10)	$ 115,842	$ 108,845	$ 355,788	$ 313,302
Product [Member]
Revenues	586,756	576,340	1,677,030	1,649,762
Cost of Goods and Services Sold	233,369	232,851	670,401	657,167
Service [Member]
Revenues	167,110	158,506	487,654	467,901
Cost of Goods and Services Sold	$ 85,441	$ 82,741	$ 251,370	$ 253,684