Revenue Recognition - Additional Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 29, 2024 USD ($)	Oct. 01, 2023 USD ($)	Sep. 29, 2024 USD ($) brand_category	Oct. 01, 2023 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 2.7		$ 2.7
Number of brand categories | brand_category			3
Net revenues	1,281.3	$ 1,503.4	$ 3,033.9	$ 3,714.4
Non-Hasbro Branded Film & TV brands
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Net revenues		$ 0.3		$ 1.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 0.6		$ 0.6
Revenue, remaining performance obligation, period	9 months		9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-12-30
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 2.1		$ 2.1
Revenue, remaining performance obligation, period	1 year		1 year