Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 338,291	$ 285,424
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	189,460	162,336
Share-based compensation expense	33,650	26,304
Provision for deferred income taxes	19,573	20,679
Changes in assets and liabilities (net of businesses acquired):
Receivables, net	41,281	(31,102)
Inventory	(3,887)	(907)
Prepaid expenses and other	(48,290)	(18,322)
Accounts payable	(19,309)	30,596
Accrued income taxes	(6,404)	(36,983)
Deferred revenue	5,440	26,333
Other accrued liabilities	4,580	63,402
Net cash provided by operating activities	554,385	527,760
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital purchases	(218,406)	(129,966)
Capitalized software development costs	(125,951)	(72,506)
Purchases of investments	(832,039)	(999,697)
Sales and maturities of investments	825,126	663,257
Purchase of other intangibles	(39,797)	(7,212)
Acquisition of businesses, net of cash acquired	(67,877)	0
Net cash used in investing activities	(458,944)	(546,124)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of long-term debt and capital lease obligations	(9,756)	(1,772)
Proceeds from excess tax benefits from share-based compensation	29,274	36,431
Proceeds from exercise of options	24,049	31,102
Treasury stock purchases	(170,000)	0
Contingent consideration payments for acquisition of businesses	(800)	(3,400)
Other	4,823	0
Net cash provided by (used in) financing activities	(122,452)	62,361
Effect of exchange rate changes on cash and cash equivalents	(2,589)	958
Net increase (decrease) in cash and cash equivalents	(29,600)	44,955
Cash and cash equivalents at beginning of period	317,120	243,146
Cash and cash equivalents at end of period	287,520	288,101
Summary of acquisition transactions:
Fair value of net tangible assets acquired	1,512	0
Fair value of intangible assets acquired	25,489	0
Fair value of goodwill	60,511	0
Less: Fair value of contingent liability payable	(18,982)	0
Cash paid for acquisitions	68,530	0
Cash acquired	(653)	0
Net cash used	$ 67,877	$ 0