Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 398,354	$ 397,232	$ 306,627
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	263,538	222,580	212,556
Share-based compensation expense	46,295	36,113	27,919
Provision for deferred income taxes	(22,647)	8,342	(22,113)
Changes in assets and liabilities (net of businesses acquired):
Receivables, net	(9,599)	(83,705)	(128,979)
Inventory	(8,111)	(279)	(12,329)
Prepaid expenses and other	(36,038)	(2,224)	9,974
Accounts payable	4,130	35,265	17,504
Accrued income taxes	14,694	(22,784)	26,053
Deferred revenue	18,053	33,277	33,792
Other accrued liabilities	27,196	84,497	75,290
Net cash provided by operating activities	695,865	708,314	546,294
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital purchases	(352,877)	(183,429)	(104,795)
Capitalized software development costs	(174,649)	(100,189)	(82,942)
Purchases of investments	(1,106,819)	(1,286,997)	(1,083,274)
Sales and maturities of investments	1,070,598	932,394	791,881
Purchase of other intangibles	(56,805)	(22,870)	(20,620)
Acquisition of businesses, net of cash acquired	(67,877)	(40,540)	(65,341)
Net cash used in investing activities	(688,429)	(701,631)	(565,091)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of long-term debt and capital lease obligations	(24,700)	(17,083)	(25,701)
Proceeds from excess tax benefits from share-based compensation	39,927	48,370	36,433
Proceeds from exercise of options	31,403	38,147	38,900
Treasury stock purchases	(170,042)	0	0
Contingent consideration payments for acquisition of businesses	(800)	(3,400)	(779)
Other	4,823	0	0
Net cash provided by (used in) financing activities	(119,389)	66,034	48,853
Effect of exchange rate changes on cash and cash equivalents	(2,790)	1,257	(1,421)
Net increase (decrease) in cash and cash equivalents	(114,743)	73,974	28,635
Cash and cash equivalents at beginning of period	317,120	243,146	214,511
Cash and cash equivalents at end of period	202,377	317,120	243,146
Cash paid during the year for:
Interest	6,973	6,448	5,786
Income taxes, net of refund	175,377	158,871	115,867
Summary of acquisition transactions:
Fair value of net tangible assets (liabilities) acquired (assumed)	2,550	(6,375)	(8,464)
Fair value of intangible assets acquired	25,489	18,559	32,264
Fair value of goodwill	59,570	35,281	50,751
Less: Fair value of contingent liability payable	(18,982)	(1,916)	(5,235)
Less: Fair value of working capital settlement payable	0	0	(939)
Cash paid for acquisitions	68,627	45,549	68,377
Cash acquired	(750)	(5,009)	(3,036)
Net cash used	$ 67,877	$ 40,540	$ 65,341