Segment Reporting - Net Revenues by Brand and Entertainment Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 26, 2022	Jun. 27, 2021	Jun. 26, 2022	Jun. 27, 2021
Revenue from External Customer [Line Items]
Net revenues	$ 1,339.2	$ 1,322.2	$ 2,502.3	$ 2,437.0
Franchise Brands
Revenue from External Customer [Line Items]
Net revenues	743.9	677.2	1,287.0	1,200.3
Partner Brands
Revenue from External Customer [Line Items]
Net revenues	219.4	212.0	425.9	400.0
Hasbro Gaming
Revenue from External Customer [Line Items]
Net revenues	125.8	147.1	269.4	283.4
Emerging Brands
Revenue from External Customer [Line Items]
Net revenues	92.0	89.7	168.4	162.8
TV/Film/Entertainment
Revenue from External Customer [Line Items]
Net revenues	158.1	196.2	351.6	390.5
Peppa Pig
Revenue from External Customer [Line Items]
Net revenues		27.3		58.9
Gaming including Magic the Gathering and Monopoly
Revenue from External Customer [Line Items]
Net revenues	528.3	519.4	907.1	884.7
Wizards of the Coast and Digital Gaming
Revenue from External Customer [Line Items]
Net revenues	419.8	406.3	682.6	648.5
Wizards of the Coast and Digital Gaming | Tabletop Gaming
Revenue from External Customer [Line Items]
Net revenues	361.8	315.4	554.0	490.7
Wizards of the Coast and Digital Gaming | Digital and Licensed Gaming
Revenue from External Customer [Line Items]
Net revenues	58.0	90.9	128.6	157.8
Entertainment
Revenue from External Customer [Line Items]
Net revenues	185.2	226.7	412.7	445.4
Entertainment | Film & TV
Revenue from External Customer [Line Items]
Net revenues	148.2	164.3	338.4	330.7
Entertainment | Family Brands
Revenue from External Customer [Line Items]
Net revenues	22.8	26.1	46.0	44.9
Entertainment | Music and Other
Revenue from External Customer [Line Items]
Net revenues	$ 14.2	$ 36.3	$ 28.3	$ 69.8