Segment Reporting - Net Revenues by Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2021	Jun. 28, 2020	Jun. 27, 2021	Jun. 28, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	$ 1,322.2	$ 860.3	$ 2,437.0	$ 1,965.9
Corporate and Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	139.2	121.8	249.0	193.4
Consumer Products
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	689.2	519.5	1,343.1	1,092.0
Consumer Products | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	689.2	519.5	1,343.1	1,092.0
Consumer Products | Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	(96.9)	(103.1)	(167.2)	(158.7)
Wizards of the Coast & Digital Gaming | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	406.3	186.7	648.5	397.3
Wizards of the Coast & Digital Gaming | Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	(29.7)	(17.9)	(55.1)	(33.0)
Entertainment
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	226.7	154.1	445.4	476.6
Entertainment | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	226.7	154.1	445.4	476.6
Entertainment | Affiliate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	$ (12.6)	$ (0.8)	$ (26.7)	$ (1.7)