v3.26.1
Earnings (Loss) Per Common Share - Schedule of Net Earnings (Loss) Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 28, 2026
Jun. 29, 2025
Jun. 28, 2026
Jun. 29, 2025
Earnings Per Share [Abstract]        
Net earnings (loss) attributable to Hasbro, Inc. $ 160.9 $ (855.8) $ 359.3 $ (757.2)
Average shares outstanding, basic (in shares) 141.6 140.3 141.2 140.0
Effect of dilutive securities (in shares) 1.5 0.0 2.0 0.0
Equivalent shares, diluted (in shares) 143.1 140.3 143.2 140.0
Net earnings (loss) attributable to Hasbro, Inc. per common share:        
Net earnings attributable to Hasbro, Inc. per common share, basic (in dollars per share) $ 1.14 $ (6.10) $ 2.54 $ (5.41)
Net earnings attributable to Hasbro, Inc. per common share, diluted (in dollars per share) $ 1.12 $ (6.10) $ 2.51 $ (5.41)