Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Revenues [Abstract]
System Sales	$ 234,563	$ 200,503	$ 441,250	$ 399,405
Support, Maintenance and Services	588,167	486,647	1,145,596	953,203
Reimbursed Travel	29,032	20,411	49,677	34,982
Total Revenues	851,762	707,561	1,636,523	1,387,590
Costs and Expenses [Abstract]
Cost of System Sales	81,306	71,708	146,419	153,191
Cost of Support, Maintenance and Services	52,031	33,681	95,372	64,856
Cost of Reimbursed Travel	29,032	20,411	49,677	34,982
Sales And Client Service	343,234	281,192	674,135	548,548
Software Development (Includes amortization of $24,937 and $50,038 for the three and six months ended June 28, 2014; and $23,294 and $45,310 for the three and six months ended June 29, 2013)	97,326	82,282	188,871	163,345
General and Administrative	57,200	51,831	112,413	99,643
Total Costs and Expenses	660,129	541,105	1,266,887	1,064,565
Operating Earnings	191,633	166,456	369,636	323,025
Other Income, Net	2,737	2,733	5,727	5,777
Earnings before Income Taxes	194,370	169,189	375,363	328,802
Income Taxes	(65,337)	(56,282)	(126,804)	(105,855)
Net Earnings	$ 129,033	$ 112,907	$ 248,559	$ 222,947
Basic Earnings Per Share	$ 0.38	$ 0.33	$ 0.73	$ 0.65
Diluted Earnings Per Share	$ 0.37	$ 0.32	$ 0.71	$ 0.63
Basic Weighted Average Shares Outstanding	341,788	343,800	342,787	343,976
Diluted Weighted Average Shares Outstanding	349,794	352,485	351,049	352,714