Income Taxes - Additional Information (Detail)	Jul. 04, 2025
Subsequent Event
Income Tax Disclosure [Line Items]
Percentage of permanent key elements of Tax Cuts and Jobs Act	100.00%

Percentage of permanent key elements of Tax Cuts and Jobs Act.

No definition available.

Name:	bldr_PercentageOfPermanentKeyElementsOfTaxCutsAndJobsAct
Namespace Prefix:	bldr_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration