Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016
Revenues:
System sales	$ 347,808	$ 333,104	$ 667,664	$ 612,458
Support, maintenance and services	917,416	860,751	1,835,654	1,700,389
Reimbursed travel	26,770	22,107	49,162	41,250
Total revenues	1,291,994	1,215,962	2,552,480	2,354,097
Costs and expenses:
Cost of system sales	117,275	113,836	217,684	203,061
Cost of support, maintenance and services	79,018	69,613	155,210	136,838
Cost of reimbursed travel	26,770	22,107	49,162	41,250
Sales and client service	563,387	520,265	1,123,587	1,022,092
Software development (Includes amortization of $41,427 and $81,988 for the three and six months ended July 1, 2017, respectively; and $34,263 and $66,877 for the three and six months ended July 2, 2016, respectively)	142,835	135,164	288,736	268,696
General and administrative	90,633	90,027	179,025	180,161
Amortization of acquisition-related intangibles	22,688	23,638	45,562	45,239
Total costs and expenses	1,042,606	974,650	2,058,966	1,897,337
Operating earnings	249,388	241,312	493,514	456,760
Other income (expense), net	2,661	2,470	1,545	4,151
Earnings before income taxes	252,049	243,782	495,059	460,911
Income taxes	(72,366)	(77,328)	(142,163)	(144,097)
Net earnings	$ 179,683	$ 166,454	$ 352,896	$ 316,814
Basic earnings per share	$ 0.54	$ 0.49	$ 1.07	$ 0.94
Diluted earnings per share	$ 0.53	$ 0.48	$ 1.05	$ 0.92
Basic weighted average shares outstanding	331,056	337,759	330,607	338,657
Diluted weighted average shares outstanding	337,898	344,026	337,116	344,984