Consolidated Condensed Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012
Operating activities
Net earnings	$ 93,495	$ 102,394
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	125,611	125,149
(Gain) loss on disposal of property and equipment	118	(13,063)
Accretion of interest on convertible debentures	2,709	2,160
Inventory write-offs for obsolescence	14,476	16,008
Other	(11,986)	9,813
Net change in operating assets and liabilities, net of effects of businesses acquired	(44,862)	(56,927)
Net cash provided by operating activities	179,561	185,534
Investing activities
Capital expenditures	(91,591)	(86,754)
Proceeds from sale of property and equipment	3,866	7,770
Purchase of businesses, net of cash acquired	(23,034)	(85,493)
Purchase of short-term investments	(424,940)	(268,286)
Maturity of short-term investments	284,814	214,047
Other investing activities	1,246	(109)
Net cash used in investing activities	(249,639)	(218,825)
Financing activities
Proceeds from long-term borrowings	0	150,000
Issuance costs	(4,558)	(4,827)
Common stock repurchase	0	(150,000)
Principal payments on long-term debt and capital leases	(21)	(21)
Net proceeds (payments) on revolving credit lines	21,000	(69,000)
Net changes in short-term borrowings	(142)	(116)
Proceeds from stock options exercised	0	174
Excess tax benefit from RSUs vested	456	0
Distributions to noncontrolling interests	(240)	(240)
Net cash provided by (used in) financing activities	16,495	(74,030)
Effect of exchange rate changes on cash and cash equivalents	939	(4,505)
Net decrease in cash and cash equivalents	(52,644)	(111,826)
Cash and cash equivalents at beginning of period	697,595	749,088
Cash and cash equivalents at end of period	$ 644,951	$ 637,262