Segment Reporting - Operating Profit (Loss) by Segments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2021	Sep. 27, 2020	Sep. 26, 2021	Sep. 27, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating profit (loss)	$ 367.9	$ 336.6	$ 591.8	$ 315.5
Corporate and Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating profit (loss)	(24.3)	(2.9)	(56.7)	(61.1)
Consumer Products | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating profit (loss)	210.4	226.2	260.5	171.2
Wizards of the Coast and Digital Gaming | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating profit (loss)	159.4	141.6	462.3	311.5
Entertainment | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating profit (loss)	$ 22.4	$ (28.3)	$ (74.3)	$ (106.1)