Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Revenues:
Revenues	$ 1,431,061	$ 1,367,727	$ 2,820,938	$ 2,660,588
Costs and expenses:
Cost of Revenue	268,673	238,783	521,877	470,061
Sales and client service	678,895	635,105	1,319,082	1,225,053
Software development (Includes amortization of $56,005 and $112,250 for the three and six months ended June 29, 2019, respectively; and $52,141 and $102,142 for the three and six months ended June 30, 2018, respectively)	181,047	168,278	361,408	329,895
General and administrative	149,788	95,464	245,984	187,758
Amortization of acquisition-related intangibles	21,541	21,810	43,526	44,319
Total costs and expenses	1,299,944	1,159,440	2,491,877	2,257,086
Operating earnings	131,117	208,287	329,061	403,502
Other income, net	23,006	6,597	31,438	11,461
Earnings before income taxes	154,123	214,884	360,499	414,963
Income taxes	(27,154)	(45,527)	(67,311)	(85,605)
Net earnings	$ 126,969	$ 169,357	$ 293,188	$ 329,358
Basic earnings per share	$ 0.40	$ 0.51	$ 0.91	$ 0.99
Diluted earnings per share	$ 0.39	$ 0.51	$ 0.90	$ 0.98
Basic weighted average shares outstanding	321,280	330,206	322,485	331,479
Diluted weighted average shares outstanding	324,662	333,562	325,498	335,223