Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Revenues:
System sales	$ 200,503	$ 195,295	$ 399,405	$ 421,115
Support, maintenance and services	486,647	426,046	953,203	829,950
Reimbursed travel	20,411	16,017	34,982	27,505
Total revenues	707,561	637,358	1,387,590	1,278,570
Costs and expenses:
Cost of system sales	71,708	100,570	153,191	217,525
Cost of support, maintenance and services	33,681	30,913	64,856	60,478
Cost of reimbursed travel	20,411	16,017	34,982	27,505
Sales and client service	281,192	241,875	548,548	486,949
Software development (Includes amortization of $23,294 and $45,310 for the three and six months ended June 29, 2013; and $20,084 and $39,473 for the three and six months ended June 30, 2012)	82,282	73,507	163,345	144,652
General and administrative	51,831	38,393	99,643	77,939
Total costs and expenses	541,105	501,275	1,064,565	1,015,048
Operating earnings	166,456	136,083	323,025	263,522
Other income, net	2,733	2,814	5,777	5,438
Earnings before income taxes	169,189	138,897	328,802	268,960
Income taxes	(56,282)	(41,068)	(105,855)	(82,423)
Net earnings	$ 112,907	$ 97,829	$ 222,947	$ 186,537
Basic earnings per share	$ 0.33	$ 0.29	$ 0.65	$ 0.55
Diluted earnings per share	$ 0.32	$ 0.28	$ 0.63	$ 0.53
Basic weighted average shares outstanding	343,800	341,426	343,976	340,671
Diluted weighted average shares outstanding	352,485	351,268	352,714	350,666