Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Revenues:
System sales	$ 202,632	$ 229,925	$ 602,037	$ 651,040
Support, maintenance and services	508,520	432,281	1,461,723	1,262,231
Reimbursed travel	16,678	14,276	51,660	41,781
Total revenues	727,830	676,482	2,115,420	1,955,052
Costs and expenses:
Cost of system sales	64,389	100,668	217,580	318,193
Cost of support, maintenance and services	38,510	34,634	103,366	95,112
Cost of reimbursed travel	16,678	14,276	51,660	41,781
Sales and client service	304,665	259,141	853,213	746,090
Software development (Includes amortization of $24,056 and $69,366 for the three and nine months ended September 28, 2013; and $20,880 and $60,353 for the three and nine months ended September 29, 2012)	82,998	78,094	246,343	222,746
General and administrative	51,352	41,973	150,995	119,912
Total costs and expenses	558,592	528,786	1,623,157	1,543,834
Operating earnings	169,238	147,696	492,263	411,218
Other income, net	3,509	3,351	9,286	8,789
Earnings before income taxes	172,747	151,047	501,549	420,007
Income taxes	(57,403)	(52,160)	(163,258)	(134,583)
Net earnings	$ 115,344	$ 98,887	$ 338,291	$ 285,424
Basic earnings per share	$ 0.34	$ 0.29	$ 0.98	$ 0.84
Diluted earnings per share	$ 0.33	$ 0.28	$ 0.96	$ 0.81
Basic weighted average shares outstanding	342,992	342,502	343,681	341,287
Diluted weighted average shares outstanding	351,449	351,739	352,332	351,033