Goodwill - Schedule of Goodwill (Details) - USD ($) $ in Millions	6 Months Ended	9 Months Ended
	Jun. 27, 2021	Sep. 26, 2021	Sep. 27, 2020
Goodwill [Roll Forward]
Beginning balance	$ 3,691.7	$ 3,691.7
Goodwill allocation	0.0
Foreign exchange translation	(0.5)
Impairment during the period	(101.8)	(101.8)	$ 0.0
Goodwill associated with the disposal of business	(169.2)
Ending balance	3,420.2	3,420.2	$ 3,644.1
Consumer Products
Goodwill [Roll Forward]
Beginning balance	1,385.7	1,385.7
Goodwill allocation	199.4
Foreign exchange translation	(0.1)
Impairment during the period	0.0
Goodwill associated with the disposal of business	0.0
Ending balance	1,585.0
Wizards of the Coast and Digital Gaming
Goodwill [Roll Forward]
Beginning balance	53.1	53.1
Goodwill allocation	254.2
Foreign exchange translation	0.2
Impairment during the period	0.0
Goodwill associated with the disposal of business	0.0
Ending balance	307.5
Entertainment
Goodwill [Roll Forward]
Beginning balance	2,252.9	$ 2,252.9
Goodwill allocation	(453.6)
Foreign exchange translation	(0.6)
Impairment during the period	(101.8)
Goodwill associated with the disposal of business	(169.2)
Ending balance	$ 1,527.7