Segment Reporting - Net Revenues by Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Apr. 02, 2023
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	$ 757.3	$ 1,001.0
Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	0.0	0.0
Corporate and Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	0.0	0.0
Corporate and Other | Operational Excellence Program
Segment Reporting, Revenue Reconciling Item [Line Items]
Transformation office and consulting fees	5.2	10.6
Corporate and Other | Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	(85.7)	(134.2)
Consumer Products | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	413.0	520.4
Consumer Products | Operating Segments | Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	39.3	73.3
Wizards of the Coast and Digital Gaming
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	316.3	295.2
Wizards of the Coast and Digital Gaming | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	316.3	295.2
Wizards of the Coast and Digital Gaming | Operating Segments | Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	37.9	47.8
Entertainment
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	28.0	185.4
Entertainment | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	28.0	185.4
Entertainment | Operating Segments | Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	$ 8.5	$ 13.1