Goodwill - Schedule of Goodwill (Details) - USD ($) $ in Millions	9 Months Ended
	Oct. 01, 2023	Sep. 25, 2022
Goodwill [Roll Forward]
Beginning balance	$ 3,470.1	$ 3,419.6
Acquired during the period		64.7
Foreign exchange translation	(0.1)	(2.7)
Impairment during the period	231.2	11.8
Ending balance	3,238.8	3,469.8
Consumer Products
Goodwill [Roll Forward]
Beginning balance	1,584.7	1,584.9
Acquired during the period		0.0
Foreign exchange translation	(0.1)	(0.4)
Impairment during the period	0.0	0.0
Ending balance	1,584.6	1,584.5
Wizards of the Coast and Digital Gaming
Goodwill [Roll Forward]
Beginning balance	371.5	307.3
Acquired during the period		64.7
Foreign exchange translation	0.0	(0.5)
Impairment during the period	0.0	0.0
Ending balance	371.5	371.5
Entertainment
Goodwill [Roll Forward]
Beginning balance	1,513.9	1,527.4
Acquired during the period		0.0
Foreign exchange translation	0.0	(1.8)
Impairment during the period	231.2	11.8
Ending balance	$ 1,282.7	$ 1,513.8