ACQUISITIONS - Narrative (Details) - USD ($)						1 Months Ended				3 Months Ended
	Jun. 01, 2022	May 12, 2021	Apr. 20, 2021	May 29, 2020	Mar. 06, 2020	Aug. 31, 2022	May 31, 2022	Dec. 26, 2020	Feb. 29, 2020	Jun. 26, 2021	Mar. 28, 2020	Dec. 31, 2022	Dec. 25, 2021
Business Acquisition [Line Items]
Goodwill								$ 430,322,000				$ 739,861,000	$ 708,566,000
Operating lease liabilities												172,326,000	164,513,000
Non-controlling interest in consolidated subsidiaries												$ 60,865,000	$ 26,750,000
Energia Solar do Brasil
Business Acquisition [Line Items]
Cash paid to acquire business				$ 4,308,000
Percentage acquired				55.00%
Goodwill				$ 3,341,000
Contingent consideration liability, current				646,000
Goodwill expected to be tax deductible				0
Conceal Fab
Business Acquisition [Line Items]
Cash paid to acquire business	$ 39,287,000
Percentage acquired	51.00%
Current assets	$ 21,133,000
Property, plant, and equipment acquired	3,813,000
Other assets	9,108,000
Goodwill	42,465,000
Total fair value of assets acquired	107,719,000
Current Liabilities	6,658,000
Long-term debt	2,038,000
Operating lease liabilities	7,812,000
Deferred taxes	5,464,000
Other noncurrent liabilities	12,000
Total fair value of liabilities assumed	21,984,000
Non-controlling interest in consolidated subsidiaries	41,693,000
Net assets acquired	44,042,000
Contingent consideration liability, current	1,850,000
KC Utility Packaging
Business Acquisition [Line Items]
Cash paid to acquire business					$ 4,200,000
Percentage acquired					75.00%
Goodwill					$ 1,100,000
Contingent consideration liability, current					400,000
AgSense
Business Acquisition [Line Items]
Percentage acquired									49.00%				100.00%
Consideration transferred									$ 43,983,000
Holdback payment										$ 2,200,000
Deferred tax asset recognized													$ 7,700,000
Torrent Engineering and Equipment
Business Acquisition [Line Items]
Percentage acquired								40.00%
Consideration transferred								$ 3,500,000
Convert
Business Acquisition [Line Items]
Percentage acquired						9.00%					16.00%
Consideration transferred						$ 3,046,000					$ 11,750,000
Convert | Minority Interest Owner
Business Acquisition [Line Items]
Percentage not owned by the Company											25.00%
Prospera
Business Acquisition [Line Items]
Cash paid to acquire business		$ 300,000,000
Current assets		647,000
Property, plant, and equipment acquired		1,063,000
Goodwill		273,453,000
Total fair value of assets acquired		310,913,000
Current Liabilities		2,690,000
Deferred taxes		8,223,000
Total fair value of liabilities assumed		10,913,000
Net assets acquired		300,000,000
Goodwill expected to be tax deductible		0
PivoTrac
Business Acquisition [Line Items]
Cash paid to acquire business			$ 12,500,000
Goodwill			10,800,000
Contingent consideration liability, current			1,500,000
Consideration transferred			14,000,000
Goodwill expected to be tax deductible			0
Valmont West Coast Engineering
Business Acquisition [Line Items]
Percentage acquired							20.00%
Consideration transferred							$ 4,292,000
Customer Relationships | Energia Solar do Brasil
Business Acquisition [Line Items]
Intangible assets				$ 3,718,000
Useful life				8 years
Customer Relationships | KC Utility Packaging
Business Acquisition [Line Items]
Intangible assets					4,000,000
Customer Relationships | PivoTrac
Business Acquisition [Line Items]
Intangible assets			$ 2,627,000
Useful life			8 years
Other | KC Utility Packaging
Business Acquisition [Line Items]
Intangible assets					$ 500,000
Technology-Based Intangible Assets | Conceal Fab
Business Acquisition [Line Items]
Intangible assets	26,200,000
Technology-Based Intangible Assets | Prospera
Business Acquisition [Line Items]
Intangible assets		$ 32,900,000
Useful life		5 years
Trade Name | Conceal Fab
Business Acquisition [Line Items]
Intangible assets	$ 5,000,000
Trade Name | Prospera
Business Acquisition [Line Items]
Intangible assets		$ 2,850,000
Useful life		7 years