Segment Reporting - Information and Reconciliation by Segment (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 28, 2021 segment	Dec. 25, 2022 USD ($)	Dec. 26, 2021 USD ($)	Dec. 27, 2020 USD ($)
Segment Reporting [Abstract]
Number of reporting segments | segment	3
Segment Reporting Information [Line Items]
Revenues from External Customers		$ 5,856.7	$ 6,420.4	$ 5,465.4
Affiliate Revenue		0.0	0.0	0.0
Operating Profit (Loss)		407.7	763.3	501.8
Depreciation and Amortization		232.5	280.1	265.0
Capital Additions		174.2	132.7	125.8
Total Assets		9,295.9	10,037.8	10,818.4
Corporate and Other
Segment Reporting Information [Line Items]
Revenues from External Customers		0.0	0.0	0.0
Affiliate Revenue		(626.7)	(648.5)	(462.2)
Operating Profit (Loss)		(370.6)	(93.3)	(85.6)
Depreciation and Amortization		21.6	22.6	39.7
Capital Additions		27.8	18.3	14.0
Total Assets		(5,703.8)	(2,525.6)	(1,322.8)
Consumer Products | Operating Segments
Segment Reporting Information [Line Items]
Revenues from External Customers		3,572.5	3,981.6	3,649.6
Affiliate Revenue		396.7	465.4	379.0
Operating Profit (Loss)		217.3	401.4	308.1
Depreciation and Amortization		152.5	112.4	78.3
Capital Additions		87.0	73.1	69.3
Total Assets		5,757.7	4,925.5	5,552.5
Wizards of the Coast and Digital Gaming
Segment Reporting Information [Line Items]
Revenues from External Customers		1,325.1	1,286.6	906.7
Wizards of the Coast and Digital Gaming | Operating Segments
Segment Reporting Information [Line Items]
Revenues from External Customers		1,325.1	1,286.6	906.7
Affiliate Revenue		172.5	121.6	77.3
Operating Profit (Loss)		538.3	547.0	420.4
Depreciation and Amortization		14.6	48.5	9.0
Capital Additions		52.5	35.1	35.9
Total Assets		2,968.7	1,585.1	585.7
Entertainment
Segment Reporting Information [Line Items]
Revenues from External Customers		959.1	1,152.2	909.1
Entertainment | Operating Segments
Segment Reporting Information [Line Items]
Revenues from External Customers		959.1	1,152.2	909.1
Affiliate Revenue		57.5	61.5	5.9
Operating Profit (Loss)		22.7	(91.8)	(141.1)
Depreciation and Amortization		43.8	96.6	138.0
Capital Additions		6.9	6.2	6.6
Total Assets		$ 6,273.3	$ 6,052.8	$ 6,003.0