CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019
Cash flows from operating activities--
Net earnings	$ 94,941	$ 161,223
Adjustments to reconcile net earnings to net cash provided by operating activities--
Depreciation and amortization expense	54,210	50,135
Non-cash share-based compensation	9,122	1,334
Deferred income taxes	11,975	10,057
Net Periodic Benefit Cost, Other Components	(19,855)	(15,058)
Changes in assets and liabilities, net of acquisitions
Accounts receivable, net	137,208	934
Inventories, net	(11,398)	(65,154)
Prepaid expenses and other assets	13,707	(8,255)
Accounts payable	(54,169)	(4,561)
Accrued expenses and other liabilities	(70,981)	(29,065)
Net cash provided by operating activities	164,760	101,590
Cash flows from investing activities--
Additions to property and equipment	(22,712)	(21,630)
Proceeds from Sale of Property, Plant, and Equipment	9,381	0
Acquisitions, net of cash acquired	(29,850)	(167,089)
Net cash (used in) investing activities	(43,181)	(188,719)
Cash flows from financing activities--
Proceeds under Credit Facility	2,547,306	313,107
Repayments under Credit Facility	2,025,355	209,484
Net proceeds under international credit facilities	2,989	254
Net repayments under other debt arrangement	(23)	(175)
Payments of deferred purchase price	(2,145)	(446)
Repurchase of treasury stock	(76,849)	(6,086)
Payments of Debt Issuance Costs	7,592	0
Net cash (used in) provided by financing activities	438,331	97,170
Effect of exchange rates on cash and cash equivalents	(4,690)	(55)
Changes in cash and cash equivalents--
Net (decrease) increase in cash and cash equivalents	555,220	9,986
Cash and cash equivalents at beginning of year	94,500	71,701
Cash and cash equivalents at end of quarter	$ 649,720	$ 81,687