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Repurchases of Helen of Troy Common Stock - Narrative (Details) - USD ($)
May 08, 2019
Feb. 29, 2020
May 31, 2019
Equity [Abstract]      
Amount of shares authorized for purchase     $ 400,000,000
Period for stock repurchase 3 years    
Stock repurchase prior program remaining authorized repurchase amount $ 107,400,000    
Remaining share repurchase amount   $ 393,000,000.0