Goodwill - Goodwill (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 28, 2025	Sep. 29, 2024	Sep. 28, 2025	Sep. 29, 2024
Goodwill [Roll Forward]
Beginning balance			$ 2,278,200,000	$ 2,279,200,000
Impairment of goodwill (Note 5)	$ 0	$ 0	(1,021,900,000)	0
Foreign exchange translation			200,000	(300,000)
Ending balance	1,256,500,000	2,278,900,000	1,256,500,000	2,278,900,000
Wizards of the Coast and Digital Gaming
Goodwill [Roll Forward]
Beginning balance			371,000,000.0	371,700,000
Impairment of goodwill (Note 5)			0
Foreign exchange translation			(700,000)	(200,000)
Ending balance	370,300,000	371,500,000	370,300,000	371,500,000
Consumer Products
Goodwill [Roll Forward]
Beginning balance			1,582,000,000	1,582,300,000
Impairment of goodwill (Note 5)			(1,021,900,000)
Foreign exchange translation			900,000	(100,000)
Ending balance	561,000,000.0	1,582,200,000	561,000,000.0	1,582,200,000
Entertainment
Goodwill [Roll Forward]
Beginning balance				325,200,000
Impairment of goodwill (Note 5)			0
Foreign exchange translation			0	0
Ending balance	$ 325,200,000	$ 325,200,000	$ 325,200,000	$ 325,200,000