Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018
Operating activities
Net earnings	$ 150,641	$ 243,878
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	122,302	121,888
(Gain) loss on disposal of property and equipment	(168)	(2,216)
Accretion of interest on convertible debt instruments	10,558	6,966
Inventory write-offs for obsolescence	19,214	17,059
Deferred income taxes	(4,481)	(12,348)
Loss on extinguishment of debt	1,307	17,309
Other	9,029	13,021
Change in U.S. transition tax liability	(14,757)	(14,400)
Change in repatriation tax liability	(38,814)	(156,767)
Net change in operating assets and liabilities, net of effects of businesses acquired	(42,810)	(125,499)
Net cash provided by operating activities	212,021	108,891
Investing activities
Capital expenditures	(100,267)	(126,391)
Proceeds from sale of property and equipment	486	8,455
Purchase of businesses, net of cash received	(11,862)	(14,880)
Purchase of short-term investments	(59,440)	(172,732)
Maturity of short-term investments	79,765	577,524
Other investing activities	4,021	(1,608)
Net cash provided by (used in) investing activities	(87,297)	270,368
Financing activities
Proceeds from long-term borrowings	0	600,000
Issuance costs	(5,394)	(15,621)
Repurchase of convertible debentures	(22,695)	(584,991)
Net proceeds (payments) on revolving credit lines	0	(150,000)
Net changes in short-term borrowings	(12)	0
Distributions to noncontrolling interests	(600)	(525)
Cash withholding taxes paid when shares withheld for vested equity awards	(2,708)	(2,297)
Net cash used in financing activities	(71,132)	(187,685)
Effect of exchange rate changes on cash and cash equivalents	(8,141)	(11,501)
Net increase in cash and cash equivalents	45,451	180,073
Cash and cash equivalents at beginning of period	686,032	748,032
Cash and cash equivalents at end of period	731,483	928,105
Common Stock [Member]
Financing activities
Dividends paid to common stockholders	(36,396)	(31,378)
Class B Convertible Common Stock [Member]
Financing activities
Dividends paid to common stockholders	$ (3,327)	$ (2,873)