Segment Reporting - Net Revenues by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 29, 2024	Oct. 01, 2023	Sep. 29, 2024	Oct. 01, 2023
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	$ 1,281.3	$ 1,503.4	$ 3,033.9	$ 3,714.4
Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	0.0	0.0	0.0	0.0
Corporate and Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	0.0	0.0	0.0	0.0
Corporate and Other | Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	(138.8)	(131.0)	(337.2)	(402.8)
Consumer Products | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	860.1	956.9	1,797.6	2,132.5
Consumer Products | Operating Segments | Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	75.6	72.7	179.6	226.8
Wizards of the Coast and Digital Gaming
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	404.0	423.6	1,172.3	1,094.4
Wizards of the Coast and Digital Gaming | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	404.0	423.6	1,172.3	1,094.4
Wizards of the Coast and Digital Gaming | Operating Segments | Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	46.0	43.5	119.9	136.6
Entertainment
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	17.2	122.9	64.0	487.5
Entertainment | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	17.2	122.9	64.0	487.5
Entertainment | Operating Segments | Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	$ 17.2	$ 14.8	$ 37.7	$ 39.4