CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 24, 2022	Sep. 25, 2021	Sep. 24, 2022	Sep. 25, 2021
Statement of Comprehensive Income [Abstract]
Net earnings	$ 72,930	$ 52,253	$ 213,043	$ 169,911
Foreign currency translation adjustments:
Unrealized translation loss	(46,000)	(15,018)	(78,050)	(16,961)
Gain (loss) on hedging activities:
Cash flow hedges		307		16
Amortization cost included in interest expense	(16)	(16)	(48)	(48)
Commodity hedges	(2,233)	(5,754)	(1,185)	20,500
Realized (gain) loss on commodity hedges recorded in earnings	1,546	(9,870)	1,048	(10,140)
Cross currency swaps	5,592	2,530	10,873	4,041
Actuarial loss	115	163	371	1,838
Other comprehensive loss	(40,996)	(27,658)	(66,991)	(754)
Comprehensive income	31,934	24,595	146,052	169,157
Comprehensive (income) loss attributable to noncontrolling interests	242	268	(514)	(819)
Comprehensive income attributable to Valmont Industries, Inc.	$ 32,176	$ 24,863	$ 145,538	$ 168,338