Interim Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues	$ 807,357	$ 753,866	$ 2,147,192	$ 2,164,684
Gross profit	469,608	435,056	1,241,987	1,242,913
Research and development	34,656	36,015	100,236	108,650
Selling, general and administrative	204,974	202,826	593,852	612,466
Amortization	14,121	12,329	42,008	36,877
Interest expense	9,310	9,800	29,111	27,776
Restructuring Charges	4,570	6,732	7,335	11,146
Other charges (income), net	(3,832)	(2,005)	(10,118)	(4,253)
Earnings before taxes	205,809	169,359	479,563	450,251
Provision for taxes	44,042	39,964	93,119	81,891
Net earnings	$ 161,767	$ 129,395	$ 386,444	$ 368,360
Basic earnings per common share:
Net earnings	$ 6.76	$ 5.28	$ 16.13	$ 14.93
Weighted average number of common shares	23,922,272	24,487,268	23,963,311	24,677,546
Diluted earnings per common share:
Net earnings	$ 6.68	$ 5.20	$ 15.92	$ 14.67
Weighted average number of common and common equivalent shares	24,225,204	24,880,179	24,272,354	25,103,173
Comprehensive Income, Net of Tax (Note 9)	$ 180,099	$ 115,842	$ 382,844	$ 355,788
Product [Member]
Revenues	630,372	586,756	1,656,819	1,677,030
Cost of Goods and Services Sold	254,050	233,369	662,681	670,401
Service [Member]
Revenues	176,985	167,110	490,373	487,654
Cost of Goods and Services Sold	$ 83,699	$ 85,441	$ 242,524	$ 251,370