Number of persons employed by the Entity

No definition available.

Name:	dei_EntityNumberOfEmployees
Namespace Prefix:	dei_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Total revenue reported by the acquired equity method investment for its previous full fiscal year before the business acquisition.

+ References

No definition available.

+ Details

Name:	ufpi_AcquiredEquityMethodInvestmentPriorYearSales
Namespace Prefix:	ufpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage of assets purchases in the business combination.

+ References

No definition available.

+ Details

Name:	ufpi_BusinessAcquisitionPercentageOfAssetsAcquired
Namespace Prefix:	ufpi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Total revenue reported by the acquired entity for the trailing 12-months before the business acquisition.

+ References

No definition available.

+ Details

Name:	ufpi_BusinessAcquisitionRevenueReportedByAcquiredEntityForTrailingTwelveMonths
Namespace Prefix:	ufpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of expected contingent consideration.

+ References

No definition available.

+ Details

Name:	ufpi_BusinessCombinationEstimatedContingentConsideration
Namespace Prefix:	ufpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of net tangible assets acquired at the acquisition date.

+ References

No definition available.

+ Details

Name:	ufpi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetTangibleAssets
Namespace Prefix:	ufpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the amount of the Company's call right to purchase the remaining interest of acquired business.

+ References

No definition available.

+ Details

Name:	ufpi_CallRight
Namespace Prefix:	ufpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Number of locations.

+ References

No definition available.

+ Details

Name:	ufpi_NumberOfLocations
Namespace Prefix:	ufpi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of pallet manufacturing facilities.

+ References

No definition available.

+ Details

Name:	ufpi_NumberOfPalletManufacturingFacilities
Namespace Prefix:	ufpi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of pressure-treating facilities.

+ References

No definition available.

+ Details

Name:	ufpi_NumberOfPressureTreatingFacilities
Namespace Prefix:	ufpi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the amount of the Sellers put right to sell the remaining interest to the Company.

+ References

No definition available.

+ Details

Name:	ufpi_SellersPutRight
Namespace Prefix:	ufpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

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.

+ References

No definition available.

+ Details

Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Total revenue reported by the acquired entity for its previous full fiscal year before the business acquisition.

+ References

No definition available.

+ Details

Name:	us-gaap_BusinessAcquisitionRevenueReportedByAcquiredEntityForLastAnnualPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6613-128477

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6578-128477

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472

+ Details

Name:	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(10))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8813-108599

+ Details

Name:	us-gaap_EquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of states the entity operates in as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

+ Details

Name:	us-gaap_PaymentsToAcquireEquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	srt_OwnershipAxis=ufpi_DempseyWoodProductsLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=ufpi_PreviousOwnersOfDempseyWoodProductsIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ufpi_DempseyWoodProductsLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=ufpi_PackagingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ufpi_TitanCorrugatedIncAndAllBoxedUpLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ufpi_CedrPolyLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=ufpi_RetailSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ufpi_UltraAluminumManufacturingIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ufpi_AdvantageLabelsPackagingIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ufpi_FicusPaxPrivateLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=us-gaap_AllOtherSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ufpi_BoxpackPackagingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ufpi_ShelterProductsIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=ufpi_ConstructionSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ufpi_EndurableBuildingProductsLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ufpi_WalnutHollowFarmIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ufpi_SpartanburgForestProductsIncAndItsAffiliatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ufpi_JcGilmorePtyLtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ufpi_PalletoneIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=ufpi_RetailOrPackagingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

BUSINESS COMBINATIONS (Details) $ in Thousands, $ in Millions																12 Months Ended
	Dec. 06, 2022 USD ($)	Jun. 27, 2022 USD ($)	May 09, 2022 USD ($)	Dec. 27, 2021 USD ($)	Dec. 20, 2021 USD ($)	Nov. 22, 2021 USD ($) facility	Nov. 01, 2021 USD ($)	Nov. 01, 2021 AUD ($)	Sep. 27, 2021 USD ($) ft²	Apr. 29, 2021 USD ($)	Apr. 19, 2021 USD ($)	Apr. 12, 2021 USD ($) employee state	Mar. 01, 2021 USD ($)	Mar. 01, 2021 AUD ($)	Dec. 28, 2020 USD ($) item	Dec. 31, 2022 USD ($)
Business Acquisition
Aggregate acquisitions' net sales																$ 1,500,000
Aggregate acquisitions' operating profit																67,000
Dempsey Wood Products, LLC
Business Acquisition
Ownership interest		50.00%
Sellers \| Dempsey Wood Products, LLC
Business Acquisition
Ownership interest		50.00%
Dempsey Wood Products, LLC
Business Acquisition
Sellers put right		$ 50,000
Call right		70,000
Carrying value																$ 67,400
Dempsey Wood Products, LLC \| Packaging
Business Acquisition
Purchase consideration, equity method investment		69,791
Intangible Assets		34,552
Net Tangible Assets		35,239
Acquired equity method investment, prior year sales		$ 69,000
Titan Corrugated, Inc. (Titan) and All Boxed Up, LLC \| Packaging
Business Acquisition
Cash paid for business acquisition	$ 71,009
Percentage of assets purchased (as a percent)	100.00%
Intangible Assets	$ 48,812
Net Tangible Assets	22,197
Acquired entity, trailing 12-months sales	$ 46,500
Cedar Poly, LLC \| Retail
Business Acquisition
Cash paid for business acquisition			$ 15,398
Percentage of assets purchased (as a percent)			100.00%
Intangible Assets			$ 4,821
Net Tangible Assets			10,577
Acquired entity, prior year sales			$ 17,300
Ultra \| Retail
Business Acquisition
Cash paid for business acquisition, net of cash acquired				$ 24,057
Percentage of stock purchase (as a percent)				100.00%
Estimated contingent consideration				$ 2,000
Intangible Assets				20,390
Net Tangible Assets				5,667
Acquired entity, prior year sales				$ 45,000
Advantage \| Packaging
Business Acquisition
Cash paid for business acquisition					$ 23,154
Percentage of stock purchase (as a percent)					100.00%
Intangible Assets					$ 13,817
Net Tangible Assets					9,337
Acquired entity, trailing 12-months sales					$ 19,800
Ficus \| All Other
Business Acquisition
Cash paid for business acquisition, net of cash acquired						$ 10,831
Percentage of stock purchase (as a percent)						70.00%
Number of plant locations \| facility						10
Intangible Assets						$ 12,686
Net Tangible Assets						(1,855)
Acquired entity, trailing 12-months sales						$ 39,000
Boxpack Packaging \| All Other
Business Acquisition
Cash paid for business acquisition							$ 5,984
Percentage of assets purchased (as a percent)							100.00%
Intangible Assets							$ 6,963
Acquired entity, trailing 12-months sales							$ 6,200	$ 8.2
Shelter Products \| Construction
Business Acquisition
Purchase consideration									$ 6,443
Percentage of assets purchased (as a percent)									100.00%
Intangible Assets									$ 4,039
Acquired entity, prior year sales									$ 11,400
Square feet of warehouse \| ft²									87,800
Endurable Building Products \| Construction
Business Acquisition
Cash paid for business acquisition										$ 10,129
Percentage of assets purchased (as a percent)										100.00%
Intangible Assets										$ 7,099
Acquired entity, prior year sales										$ 15,000
Walnut Hollow Farm, Inc. \| Retail
Business Acquisition
Cash paid for business acquisition											$ 8,549
Percentage of assets purchased (as a percent)											100.00%
Intangible Assets											$ 1,526
Acquired entity, prior year sales											$ 11,600
Spartanburg Forest Products, Inc. \| Retail
Business Acquisition
Purchase consideration												$ 153,462
Percentage of assets purchased (as a percent)												100.00%
Net Tangible Assets												$ 153,462
Acquired entity, prior year sales												$ 543,000
Number of Employees \| employee												150
Number of states in which the entity operates \| state												5
J. C. Gilmore Pty Ltd \| All Other
Business Acquisition
Purchase consideration													$ 5,511
Percentage of assets purchased (as a percent)													100.00%
Net Tangible Assets													$ 42
Acquired entity, prior year sales													$ 10,000	$ 15.0
PalletOne \| Retail/Packaging
Business Acquisition
Purchase consideration															$ 259,011
Percentage of stock purchase (as a percent)															100.00%
Net Tangible Assets															$ 179,094
Acquired entity, trailing 12-months sales															$ 698,000
Number of pallet manufacturing facilities \| item															17
Number of pressure-treating facilities \| item															5