Segment Reporting - Operating Profit (Loss) by Segments (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]
Operating profit (loss)	$ 76.6	$ 2.2	$ 223.9	$ (21.1)
Corporate and Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating profit (loss)	(20.4)	(13.1)	(32.4)	(58.2)
Consumer Products | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating profit (loss)	17.8	(45.3)	50.1	(55.0)
Wizards of the Coast & Digital Gaming | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating profit (loss)	192.9	74.1	302.9	169.9
Entertainment | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating profit (loss)	$ (113.7)	$ (13.5)	$ (96.7)	$ (77.8)