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Investment in Flowers Foods, Inc. Common Stock Fund - Schedule of Plan Held Investments in The Company (Detail) - EBP 004 [Member] - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Employee Benefit Plan, Investment, Fair Value and NAV [Line Items]    
Number of common shares held 1,678,914 1,609,840
Common shares as a percentage of the Plan's total investments at fair value 1.98% 3.90%
Common shares as a percentage of Flowers Foods, Inc. 0.81% 0.77%
Short term investment fund $ 136,964 $ 260,541
Common Stock Fund [Member]    
Employee Benefit Plan, Investment, Fair Value and NAV [Line Items]    
Number of common shares held 1,704,903 1,621,384
EBP, Employer, Common Stock [Member]    
Employee Benefit Plan, Investment, Fair Value and NAV [Line Items]    
Number of common shares held 1,704,903 1,621,384
Fair value of common shares held (at $10.88 and $20.66 per common share, respectively) $ 18,549,345 $ 33,497,793