Segment Reporting - Net Revenues by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2023	Sep. 25, 2022	Oct. 01, 2023	Sep. 25, 2022
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	$ 1,503.4	$ 1,675.9	$ 3,714.4	$ 4,178.2
External
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	1,503.4	1,675.9	3,714.4	4,178.2
Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	0.0	0.0	0.0	0.0
Corporate and Other | External
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	(131.0)	(167.2)	(402.8)	(513.7)
Consumer Products
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	956.9	1,160.8	2,132.5	2,567.8
Consumer Products | Operating Segments | External
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	956.9	1,160.8	2,132.5	2,567.8
Consumer Products | Operating Segments | Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	72.7	113.2	226.8	350.3
Wizards of the Coast and Digital Gaming
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	423.6	303.5	1,094.4	986.1
Wizards of the Coast and Digital Gaming | Operating Segments | External
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	423.6	303.5	1,094.4	986.1
Wizards of the Coast and Digital Gaming | Operating Segments | Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	43.5	39.4	136.6	122.1
Entertainment
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	122.9	211.6	487.5	624.3
Entertainment | Operating Segments | External
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	122.9	211.6	487.5	624.3
Entertainment | Operating Segments | Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	$ 14.8	$ 14.6	$ 39.4	$ 41.3