Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 222,947	$ 186,537
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	122,232	106,215
Share-based compensation expense	21,123	16,583
Provision for deferred income taxes	1,470	(10,480)
Changes in assets and liabilities (net of businesses acquired):
Receivables, net	38,985	31,282
Inventory	450	878
Prepaid expenses and other	(28,002)	(13,898)
Accounts payable	5,471	15,059
Accrued income taxes	11,025	(29,459)
Deferred revenue	(12,166)	8,140
Other accrued liabilities	6,620	34,690
Net cash provided by operating activities	390,155	345,547
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital purchases	(134,987)	(78,164)
Capitalized software development costs	(77,907)	(46,847)
Purchases of investments	(537,328)	(655,310)
Sales and maturities of investments	533,606	446,861
Purchase of other intangibles	(35,772)	(5,586)
Acquisition of businesses, net of cash acquired	(67,802)	0
Net cash used in investing activities	(320,190)	(339,046)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of long-term debt and capital lease obligations	(9,750)	(1,438)
Proceeds from excess tax benefits from share-based compensation	21,675	30,101
Proceeds from exercise of options	16,975	25,044
Treasury stock purchases	(141,791)	0
Contingent consideration payments for acquisition of businesses	(800)	0
Other	475	0
Net cash provided by (used in) financing activities	(113,216)	53,707
Effect of exchange rate changes on cash and cash equivalents	(3,105)	(566)
Net increase (decrease) in cash and cash equivalents	(46,356)	59,642
Cash and cash equivalents at beginning of period	317,120	243,146
Cash and cash equivalents at end of period	270,764	302,788
Summary of acquisition transactions:
Fair value of net tangible assets acquired	1,496	0
Fair value of intangible assets acquired	25,489	0
Fair value of goodwill	60,452	0
Less: Fair value of contingent liability payable	(18,982)	0
Cash paid for acquisitions	68,455	0
Cash acquired	(653)	0
Net cash used	$ 67,802	$ 0