Description of the Plan - Contributions (Details) - Employees' Profit Sharing and 401(k) Plan	12 Months Ended
Dec. 31, 2025 USD ($) item	Dec. 31, 2024 USD ($)
Description of the Plan
Employer contribution	25.00%	25.00%
Percentage of participant eligible compensation	6.00%	6.00%
Matching contributions	$ 0	$ 0
Service requirement \| item	1,000
Profit sharing contributions	$ 0	$ 0
Vesting percentage	100.00%
Dividends percentage	100.00%
Less than 2
Description of the Plan
Vesting percentage	0.00%
2 but less than 3
Description of the Plan
Vesting percentage	20.00%
3 but less than 4
Description of the Plan
Vesting percentage	40.00%
4 but less than 5
Description of the Plan
Vesting percentage	60.00%
5 but less than 6
Description of the Plan
Vesting percentage	80.00%
6 or more
Description of the Plan
Vesting percentage	100.00%
Maximum
Description of the Plan
Employee contribution	75.00%

Dividend payment vesting level percentage applied to (employee benefit plan (EBP)).

No definition available.

Name:	ufpi_EmployeeBenefitPlanDividendPaymentVestingLevelPercentage
Namespace Prefix:	ufpi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of matching contributions made by an employer to hourly participants in (employee benefit plan (EBP)).

+ References

No definition available.

+ Details

Name:	ufpi_EmployeeBenefitPlanEmployerMatchingContributionsToHourlyParticipantsAmount
Namespace Prefix:	ufpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of profit sharing contributions made by an employer to a (employee benefit plan (EBP)).

+ References

No definition available.

+ Details

Name:	ufpi_EmployeeBenefitPlanProfitSharingContributionsAmount
Namespace Prefix:	ufpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Threshold service requirement a participant must meet to be eligible for profit sharing contributions from employer under (employee benefit plan (EBP)).

+ References

No definition available.

+ Details

Name:	ufpi_EmployeeBenefitPlanProfitSharingContributionsThresholdServiceRequirement
Namespace Prefix:	ufpi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of vesting at the time of death, attainment of normal retirement age, disability.

+ References

No definition available.

+ Details

Name:	ufpi_EmployeeBenefitPlanVestingPercentage
Namespace Prefix:	ufpi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- 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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-SubTopic 205
-Topic 962
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of employer matching contribution on eligible participant contribution to employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanEmployerContributionMatchingPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of participant compensation eligible for employer matching contribution for participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanEmployerContributionParticipantCompensationMatchedPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of maximum pretax annual compensation that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), is permitted to contribute to total pretax annual compensation.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanParticipantContributionPretaxMaximumAnnualCompensationToTotalCompensationPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=ufpi_EBP001Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=ufpi_EBPLessThanTwoYearsOfServiceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=ufpi_EBPTwoYearsAndLessThanThreeYearsOfServiceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=ufpi_EBPThreeYearsAndLessThanFourYearsOfServiceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=ufpi_EBPFourYearsAndLessThanFiveYearsOfServiceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=ufpi_EBPFiveYearsAndLessThanSixYearsOfServiceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=ufpi_EBPSixYearsAndLaterThanSixYearsOfServiceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: