SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES RECLASSIFICATIONS FOR ACCOUNTING PRONOUNCEMENTS (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Sales	$ 648,622	$ 595,393	$ 620,298	$ 547,522	$ 611,881	$ 567,901	$ 567,653	$ 523,591	$ 2,411,835	$ 2,271,026	$ 2,108,931
Research and Development Expense									64,525	61,393	59,424
Selling Expense									126,641	121,873	113,164
General and Administrative Expense									306,469	292,399	265,584
Other income, net									16,596	15,970	12,690
Provision for income taxes									(80,490)	(84,728)	(78,579)
Earnings from continuing operations									275,749	214,891	189,382
Net earnings	82,835	$ 74,483	$ 74,788	$ 43,643	67,750	$ 63,944	$ 50,650	$ 32,547	275,749	214,891	187,329
Receivables, net	593,755				494,923				593,755	494,923
Inventories, net	423,426				378,866				423,426	378,866
Other assets	19,160				18,229				19,160	18,229
Income taxes payable	5,811				4,564				5,811	4,564
Deferred revenue	236,508				214,891				236,508	214,891
Retained earnings	2,191,471				1,944,324				2,191,471	1,944,324
Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Sales									(5,668)
Provision for income taxes									1,313
Net earnings									(3,972)
Receivables, net	(22,378)				18,363				(22,378)	18,363
Inventories, net	24,235				(23,555)				24,235	(23,555)
Other assets	(879)				878				(879)	878
Income taxes payable	(1,296)								(1,296)
Deferred revenue	3,972				(2,040)				3,972	(2,040)
Retained earnings	(1,698)				(2,274)				(1,698)	(2,274)
Accounting Standards Update 2017-07 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Research and Development Expense										1,085	832
Selling Expense										1,871	1,936
General and Administrative Expense										(6,143)	(6,981)
Other income, net										14,623	11,579
Accounting Standards Update 2018-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effect of Adoption, Quantification									25,000
Restatement Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Sales									1,987,581
Provision for income taxes									(79,177)
Net earnings									271,777
Receivables, net	571,377				513,286				571,377	513,286
Inventories, net	447,661				355,311				447,661	355,311
Other assets	18,281				19,107				18,281	19,107
Income taxes payable	4,515								4,515
Deferred revenue	240,480				212,851				240,480	212,851
Retained earnings	$ 2,189,773				$ 1,942,050				2,189,773	1,942,050
Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Research and Development Expense										60,308	58,592
Selling Expense										120,002	111,228
General and Administrative Expense										298,542	272,565
Other income, net										1,347	1,111
Product [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Sales									1,993,249	1,854,216	1,714,358
Cost of Goods and Services Sold									1,272,599	1,198,881	1,113,078
Product [Member] | Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold									(383)
Product [Member] | Accounting Standards Update 2017-07 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold										14,523	12,791
Product [Member] | Restatement Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold									1,272,216
Product [Member] | Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold										1,184,358	1,100,287
Service [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Sales									418,586	416,810	394,573
Cost of Goods and Services Sold									267,975	271,360	261,162
Service [Member] | Accounting Standards Update 2017-07 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold										3,287	3,001
Service [Member] | Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold										$ 268,073	$ 258,161
Minimum [Member] | Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effect of Adoption, Quantification									175,000
Maximum [Member] | Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effect of Adoption, Quantification									$ 185,000