Revenue Recognition - Net Revenues by Category (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2025	Sep. 29, 2024	Sep. 28, 2025	Sep. 29, 2024
Revenue from External Customer [Line Items]
Net revenues	$ 1,387.5	$ 1,281.3	$ 3,255.4	$ 3,033.9
Wizards of the Coast and Digital Gaming
Revenue from External Customer [Line Items]
Net revenues	572.0	404.0	1,556.5	1,172.3
Entertainment
Revenue from External Customer [Line Items]
Net revenues	18.6	17.2	61.3	64.0
Tabletop Gaming | Wizards of the Coast and Digital Gaming
Revenue from External Customer [Line Items]
Net revenues	441.8	296.8	1,191.9	832.6
Digital and Licensed Gaming | Wizards of the Coast and Digital Gaming
Revenue from External Customer [Line Items]
Net revenues	130.2	107.2	364.6	339.7
Film and TV | Entertainment
Revenue from External Customer [Line Items]
Net revenues	1.9	1.6	7.7	3.4
Family Brands | Entertainment
Revenue from External Customer [Line Items]
Net revenues	$ 16.7	$ 15.6	$ 53.6	$ 60.6