Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net sales
Product Sales	$ 1,862,026	$ 1,852,192	$ 1,826,891
Service Sales	516,946	489,336	482,437
Total Net Sales	2,378,972	2,341,528	2,309,328
Cost of sales
Products Cost of Sales	794,915	811,204	798,682
Service Cost of Sales	302,031	289,269	292,372
Gross profit	1,282,026	1,241,055	1,218,274
Research and development	116,346	112,530	116,139
Selling, general and administrative	692,788	684,026	703,632
Amortization	24,539	21,357	17,808
Interest Expense	22,711	22,764	23,226
Restructuring Charges	19,830	16,687	5,912
Other Charges (Income), Net	3,103	1,090	2,380
Earnings Before Taxes	402,709	382,601	349,177
Provision for taxes	96,615	91,754	79,684
Net earnings	$ 306,094	$ 290,847	$ 269,493
Basic earnings per common share:
Net earnings	$ 10.22	$ 9.37	$ 8.45
Weighted average number of common shares	29,945,954	31,044,532	31,897,779
Diluted earnings per common share:
Net earnings	$ 9.96	$ 9.14	$ 8.21
Weighted average number of common and common equivalent shares	30,728,482	31,824,077	32,839,365