Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Revenues:
Revenue	$ 5,692,598	$ 5,366,325	$ 5,142,272
Costs and expenses:
Cost of Revenue	1,071,041	937,348	854,091
Sales and client service	2,675,337	2,493,696	2,276,821
Software development (Includes amortization of $227,414, $210,228 and $173,250, respectively)	737,136	683,663	605,046
General and administrative	520,598	389,469	355,267
Amortization of acquisition-related intangibles	87,817	87,364	90,576
Total costs and expenses	5,091,929	4,591,540	4,181,801
Operating earnings	600,669	774,785	960,471
Other income, net	53,843	26,066	6,658
Earnings before income taxes	654,512	800,851	967,129
Income taxes	(125,058)	(170,792)	(100,151)
Net earnings	$ 529,454	$ 630,059	$ 866,978
Basic earnings per share	$ 1.66	$ 1.91	$ 2.62
Diluted earnings per share	$ 1.65	$ 1.89	$ 2.57
Basic weighted average shares outstanding	318,229	330,084	331,373
Diluted weighted average shares outstanding	321,235	333,572	337,999