CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net earnings	$ 350,624	$ 144,912	$ 254,251
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	95,395	98,708	97,167
Contribution to defined benefit pension plan	(19,599)	(17,345)	(17,155)
Impairment of goodwill and other intangible assets		140,844
Loss (gain) on divestitures	4,474	(2,994)	33,273
Stock-based compensation	29,869	39,219	41,850
Net periodic pension cost (benefit)	640	249	(10,087)
Loss on sale of property, plant, and equipment	7,619	973	237
Equity in loss of nonconsolidated subsidiaries	79	1,419	950
Deferred income taxes	(24,655)	(18,649)	(1,225)
Changes in assets and liabilities:
Receivables	(29,474)	(46,308)	(74,163)
Inventories	45,643	88,433	(3,429)
Contract assets	(11,844)	(1,230)	(53,008)
Prepaid expenses and other assets (current and non-current)	613	(26,161)	26,625
Accounts payable	24,801	(10,529)	36,990
Contract liabilities	63,682	(106,884)	(567)
Accrued expenses	8,205	22,591	624
Income taxes payable	18,827	13,746	10,836
Other non-current liabilities	7,779	(14,219)	(16,904)
Net cash flows from operating activities	572,678	306,775	326,265
Cash flows from investing activities:
Purchases of property, plant, and equipment	(79,451)	(96,771)	(93,288)
Proceeds from divestiture, net of cash divested	3,830	6,369
Proceeds from sales of assets	643	1,710	1,582
Proceeds from property damage insurance claims		7,468
Acquisitions, net of cash acquired		(32,676)	(39,287)
Other, net	(3,900)	(1,381)	(1,087)
Net cash flows from investing activities	(78,878)	(115,281)	(132,080)
Cash flows from financing activities:
Proceeds from short-term borrowings	15,041	30,785	9,665
Repayments on short-term borrowings	(16,526)	(34,083)	(17,242)
Proceeds from long-term borrowings	30,009	370,012	253,999
Principal repayments on long-term borrowings	(408,080)	(134,748)	(336,403)
Proceeds from settlement of financial derivatives	2,711		3,532
Dividends paid	(48,358)	(49,515)	(45,813)
Dividends to redeemable noncontrolling interests	(664)	(662)	(714)
Purchases of redeemable noncontrolling interests	(17,745)		(7,338)
Repurchases of common stock	(70,069)	(345,279)	(40,474)
Proceeds from exercises under stock plans	6,632	5,841	16,849
Tax withholdings on exercises under stock plans	(13,075)	(18,756)	(17,966)
Other, net	(2,436)
Net cash flows from financing activities	(522,560)	(176,405)	(181,905)
Effect of exchange rate changes on cash and cash equivalents	(9,966)	2,546	(4,106)
Net change in cash and cash equivalents	(38,726)	17,635	8,174
Cash and cash equivalents-beginning of period	203,041	185,406	177,232
Cash and cash equivalents-end of period	164,315	203,041	185,406
Supplemental disclosures of cash flow information:
Interest paid	57,709	55,541	46,653
Income taxes paid	$ 125,548	$ 103,697	$ 93,109