Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 377,561	$ 338,291
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	217,212	189,460
Share-based compensation expense	43,330	33,650
Provision for deferred income taxes	21,712	19,573
Changes in assets and liabilities (net of businesses acquired):
Receivables, net	(36,562)	41,281
Inventory	3,515	(3,887)
Prepaid expenses and other	9,862	(48,290)
Accounts payable	20,137	(19,309)
Accrued income taxes	(2,038)	(6,404)
Deferred revenue	7,361	5,440
Other accrued liabilities	(38,511)	4,580
Net cash provided by operating activities	623,579	554,385
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital purchases	(200,372)	(218,406)
Capitalized software development costs	(130,761)	(125,951)
Purchases of investments	(1,069,938)	(832,039)
Sales and maturities of investments	1,224,063	825,126
Purchase of other intangibles	(10,238)	(39,797)
Acquisition of businesses, net of cash acquired	(7,476)	(67,877)
Net cash used in investing activities	(194,722)	(458,944)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of long-term debt and capital lease obligations	(75)	(9,756)
Proceeds from excess tax benefits from share-based compensation	26,079	29,274
Proceeds from exercise of options	19,423	24,049
Treasury stock purchases	(217,082)	(170,042)
Contingent consideration payments for acquisition of businesses	(10,617)	(800)
Cash Grants	48,000	0
Other	2,894	4,823
Net cash provided by (used in) financing activities	(131,378)	(122,452)
Effect of exchange rate changes on cash and cash equivalents	(3,362)	(2,589)
Net increase (decrease) in cash and cash equivalents	294,117	(29,600)
Cash and cash equivalents at beginning of period	202,377	317,120
Cash and cash equivalents at end of period	496,494	287,520
Summary of acquisition transactions:
Fair value of net tangible assets acquired	(1,509)	1,512
Fair value of intangible assets acquired	3,800	25,489
Fair value of goodwill	16,785	60,511
Less: Fair value of contingent liability payable	(11,600)	(18,982)
Cash paid for acquisitions	7,476	68,530
Cash acquired	0	(653)
Net cash used	$ 7,476	$ 67,877