REVENUE RECOGNITION - Disaggregated revenue (Details) $ in Thousands	3 Months Ended
	Mar. 29, 2025 USD ($) item	Mar. 30, 2024 USD ($)
Disaggregation of Revenue [Line Items]
Number of markets in which the entity operates (in markets) \| item	3
NET SALES	$ 1,595,519	$ 1,638,966
Change % in net sales	(2.70%)
Point in Time
Disaggregation of Revenue [Line Items]
NET SALES	$ 1,549,304	1,604,835
Change % in net sales	(3.50%)
Over Time
Disaggregation of Revenue [Line Items]
NET SALES	$ 46,215	$ 34,131
Change % in net sales	35.40%
Minimum
Disaggregation of Revenue [Line Items]
Number of months to complete contract projects	6 months
Maximum
Disaggregation of Revenue [Line Items]
Number of months to complete contract projects	18 months

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

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+ Details

UFP INDUSTRIES INC 10-Q