Segment Reporting - Net Revenues by Brand and Entertainment Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2023	Mar. 27, 2022
Revenue from External Customer [Line Items]
Net revenues	$ 1,001.0	$ 1,163.1
Franchise Brands
Revenue from External Customer [Line Items]
Net revenues	613.4	650.4
Partner Brands
Revenue from External Customer [Line Items]
Net revenues	132.7	206.5
Portfolio Brands
Revenue from External Customer [Line Items]
Net revenues	92.0	112.6
Non-Hasbro Branded Film & TV
Revenue from External Customer [Line Items]
Net revenues	162.9	193.6
Wizards of the Coast and Digital Gaming
Revenue from External Customer [Line Items]
Net revenues	295.2	262.8
Wizards of the Coast and Digital Gaming | Tabletop Gaming
Revenue from External Customer [Line Items]
Net revenues	217.9	192.2
Wizards of the Coast and Digital Gaming | Digital and Licensed Gaming
Revenue from External Customer [Line Items]
Net revenues	77.3	70.6
Entertainment
Revenue from External Customer [Line Items]
Net revenues	185.4	227.5
Entertainment | Film & TV
Revenue from External Customer [Line Items]
Net revenues	168.4	190.2
Entertainment | Family Brands
Revenue from External Customer [Line Items]
Net revenues	17.0	23.2
Entertainment | Music and Other
Revenue from External Customer [Line Items]
Net revenues	$ 0.0	$ 14.1