Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Revenues:
Revenues	$ 1,429,428	$ 1,340,073	$ 4,250,366	$ 4,000,661
Costs and expenses:
Cost of Revenue	271,778	230,332	793,655	700,393
Sales and client service	707,743	605,946	2,026,825	1,830,999
Software development (Includes amortization of $56,786 and $169,036 for the three and nine months ended September 28, 2019, respectively; and $53,429 and $155,571 for the three and nine months ended September 29, 2018, respectively)	187,526	172,297	548,934	502,192
General and administrative	152,321	102,789	398,305	290,547
Amortization of acquisition-related intangibles	21,283	21,553	64,809	65,872
Total costs and expenses	1,340,651	1,132,917	3,832,528	3,390,003
Operating earnings	88,777	207,156	417,838	610,658
Other income, net	13,535	6,943	44,973	18,404
Earnings before income taxes	102,312	214,099	462,811	629,062
Income taxes	(20,377)	(44,718)	(87,688)	(130,323)
Net earnings	$ 81,935	$ 169,381	$ 375,123	$ 498,739
Basic earnings per share	$ 0.26	$ 0.51	$ 1.17	$ 1.51
Diluted earnings per share	$ 0.26	$ 0.51	$ 1.16	$ 1.49
Basic weighted average shares outstanding	315,876	329,342	320,282	330,789
Diluted weighted average shares outstanding	319,113	332,937	323,361	334,493