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Document and Entity Information (USD $)
3 Months Ended
Mar. 29, 2015
Apr. 20, 2015
Jun. 26, 2014
Document and Entity Information [Abstract]      
Entity Registrant Name HASBRO INC    
Entity Central Index Key 0000046080    
Current Fiscal Year End Date --12-27    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 5,864,425,000dei_EntityPublicFloat
Entity Common Stock, Shares Outstanding   124,479,312dei_EntityCommonStockSharesOutstanding  
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus Q1    
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Mar. 29, 2015