Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 285,424	$ 215,435
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	162,336	156,841
Share-based compensation expense	26,304	20,363
Provision for deferred income taxes	20,679	9,246
Changes in assets and liabilities (net of businesses acquired):
Receivables, net	(31,102)	(103,829)
Inventory	(907)	(1,200)
Prepaid expenses and other	(18,322)	1,469
Accounts payable	30,596	8,026
Accrued income taxes	(36,983)	4,662
Deferred revenue	26,333	18,932
Other accrued liabilities	63,402	47,860
Net cash provided by operating activities	527,760	377,805
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital purchases	(129,966)	(75,602)
Capitalized software development costs	(72,506)	(61,827)
Purchases of investments	(999,697)	(870,960)
Sales and maturities of investments	663,257	615,219
Purchase of other intangibles	(7,212)	(8,395)
Acquisition of businesses, net of cash acquired	0	(28,069)
Net cash used in investing activities	(546,124)	(429,634)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of long-term debt	(1,772)	(715)
Proceeds from excess tax benefits from stock compensation	36,431	34,009
Proceeds from exercise of options	31,102	36,463
Contingent consideration payments for acquisition of business	(3,400)	(779)
Net cash provided by financing activities	62,361	68,978
Effect of exchange rate changes on cash and cash equivalents	958	(466)
Net increase in cash and cash equivalents	44,955	16,683
Cash and cash equivalents at beginning of period	243,146	214,511
Cash and cash equivalents at end of period	$ 288,101	$ 231,194