BASIS OF PRESENTATION RECLASSIFICATIONS FOR ACCOUNTING PRONOUNCEMENTS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Product sales	$ 444,687	$ 423,229
Cost of product sales	299,311	289,610
Cost of service sales	67,020	67,046
Research and development expenses	15,941	15,591
General and administrative expenses	69,232	74,194
Selling expenses	31,520	29,458
Other income, net	4,683	3,847
Provision for income taxes	(17,334)	(8,615)
Net earnings	43,643	32,547
Receivables, net	518,784		$ 494,923
Inventory, Net	386,787		378,866
Other assets	18,689		18,229
Income taxes payable	8,810		4,564
Deferred revenue	217,959		214,891
Retained earnings	1,979,051		1,944,324
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Undistributed Income tax Expense	6,500
Restatement Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Product sales	442,653
Cost of product sales	299,679
Provision for income taxes	(16,719)
Net earnings	41,856
Receivables, net	496,116		513,286
Inventory, Net	410,057		355,311
Other assets	17,811		19,107
Income taxes payable	8,195
Deferred revenue	217,811		212,851
Retained earnings	1,979,538		1,942,050
Scenario, Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of product sales		286,492
Cost of service sales		66,324
Research and development expenses		15,298
General and administrative expenses		75,297
Selling expenses		28,953
Other income, net		312
Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Product sales	(2,034)
Cost of product sales	368
Provision for income taxes	615
Net earnings	(1,787)
Receivables, net	(22,668)		18,363
Inventory, Net	23,270		(23,555)
Other assets	(878)		878
Income taxes payable	(615)
Deferred revenue	(148)		(2,040)
Retained earnings	$ 487		$ (2,274)
Accounting Standards Update 2017-07 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of product sales		3,118
Cost of service sales		722
Research and development expenses		293
General and administrative expenses		(1,103)
Selling expenses		505
Other income, net		$ 3,535