Fair Value of Financial Instruments - Additional Information (Detail) - Distributor	4 Months Ended	12 Months Ended
Apr. 25, 2026	Jan. 03, 2026
Fair Value Disclosures [Line Items]
Number of independent distributors	2,500	2,500

Represents the approximate number of independent distributors for the company.

No definition available.

Name:	flo_NumberOfIndependentDistributors
Namespace Prefix:	flo_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration