RECEIVABLES SALES PROGRAM - Receivables Sold (Details) $ in Millions	3 Months Ended
Mar. 29, 2026 USD ($)
Receivables [Abstract]
Receivables sold	$ 119.8
Receivables collected and remitted to financial institutions	$ 40.8

Receivables Sales Program, Receivables Collected and Remitted

No definition available.

Name:	utz_ReceivablesSalesProgramReceivablesCollectedAndRemitted
Namespace Prefix:	utz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration