Segment Reporting - Segment Reporting Information, by Segment (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 28, 2025	Sep. 29, 2024	Sep. 28, 2025	Sep. 29, 2024
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 1,590,100,000	$ 1,471,100,000		$ 3,485,500,000
Total net revenues	1,387,500,000	1,281,300,000	$ 3,255,400,000	3,033,900,000
Cost of sales	414,300,000	378,900,000	844,100,000	820,800,000
Program cost amortization	7,400,000	7,900,000	21,000,000.0	24,500,000
Royalties	114,300,000	98,000,000.0	255,800,000	204,200,000
Advertising	108,300,000	101,900,000	227,300,000	213,800,000
Amortization of intangible assets	17,200,000	17,100,000	51,400,000	51,200,000
Distribution	55,000,000.0	58,700,000	140,300,000	145,700,000
Managed expense	329,900,000	316,900,000	2,001,900,000	943,500,000
Operating profit (loss)	341,100,000	301,900,000	(286,400,000)	630,200,000
Reconciliation to Earnings before income taxes:
Interest expense	40,800,000	46,200,000	123,000,000.0	127,700,000
Interest income	(6,300,000)	(14,700,000)	(20,600,000)	(36,000,000.0)
Other expense (income), net	1,400,000	(19,900,000)	(15,900,000)	(15,700,000)
Earnings (loss) before income taxes	305,200,000	290,300,000	(372,900,000)	554,200,000
Impairment of goodwill (Note 5)	0	0	1,021,900,000	0
Loss on disposal of business	0	0	25,000,000.0	24,400,000
Selling, distribution and administration	287,300,000	299,300,000	839,700,000	852,600,000
Revision of Prior Period, Error Correction, Adjustment
Segment Reporting, Revenue Reconciling Item [Line Items]
Cost of sales				26,700,000
Reconciliation to Earnings before income taxes:
Selling, distribution and administration			31,100,000	31,100,000
Reversal of stock compensation expense				18,100,000
Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues			3,729,900,000
Corporate and Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	60,600,000	51,000,000.0	130,600,000	114,400,000
Total net revenues	0	0	0	0
Cost of sales	400,000	(300,000)	200,000	(27,000,000.0)
Program cost amortization	0	0	0	0
Royalties	2,000,000.0	2,300,000	5,200,000	3,100,000
Advertising	100,000	300,000	(1,300,000)	1,800,000
Amortization of intangible assets	(500,000)	0	(400,000)	200,000
Distribution	200,000	900,000	400,000	900,000
Managed expense	(4,200,000)	6,900,000	14,800,000	21,300,000
Operating profit (loss)	2,000,000.0	(10,100,000)	(18,900,000)	(300,000)
Intersegment Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	202,600,000	189,800,000	474,500,000	451,600,000
Wizards of the Coast and Digital Gaming
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues	572,000,000.0	404,000,000.0	1,556,500,000	1,172,300,000
Reconciliation to Earnings before income taxes:
Impairment of goodwill (Note 5)			0
Wizards of the Coast and Digital Gaming | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	631,300,000	450,000,000.0	1,708,200,000	1,292,200,000
Total net revenues	572,000,000.0	404,000,000.0		1,172,300,000
Cost of sales	99,400,000	72,000,000.0	251,400,000	201,100,000
Program cost amortization	0	0	0	0
Royalties	36,000,000.0	9,500,000	86,800,000	30,700,000
Advertising	43,400,000	22,200,000	96,500,000	66,700,000
Amortization of intangible assets	2,200,000	2,100,000	6,400,000	6,200,000
Distribution	13,500,000	9,300,000	33,500,000	23,700,000
Managed expense	126,000,000.0	107,700,000	358,600,000	292,800,000
Operating profit (loss)	251,500,000	181,200,000	723,300,000	551,100,000
Wizards of the Coast and Digital Gaming | Intersegment Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	59,300,000	46,000,000.0	151,700,000	119,900,000
Consumer Products
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues			1,637,600,000
Reconciliation to Earnings before income taxes:
Impairment of goodwill (Note 5)			1,021,900,000
Consumer Products | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	867,300,000	935,700,000	1,794,100,000	1,977,200,000
Total net revenues	796,900,000	860,100,000	1,637,600,000	1,797,600,000
Cost of sales	312,800,000	305,700,000	588,100,000	641,900,000
Program cost amortization	0	0	0	0
Royalties	87,100,000	101,900,000	194,500,000	211,300,000
Advertising	64,600,000	78,900,000	131,700,000	144,500,000
Amortization of intangible assets	10,800,000	11,200,000	31,100,000	33,400,000
Distribution	41,300,000	48,500,000	106,400,000	121,100,000
Managed expense	200,200,000	192,900,000	1,579,200,000	580,600,000
Operating profit (loss)	80,100,000	121,000,000.0	(993,400,000)	64,800,000
Consumer Products | Intersegment Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	70,400,000	75,600,000	156,500,000	179,600,000
Entertainment
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues	18,600,000	17,200,000	61,300,000	64,000,000.0
Reconciliation to Earnings before income taxes:
Impairment of goodwill (Note 5)			0
Entertainment | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	30,900,000	34,400,000	97,000,000.0	101,700,000
Total net revenues	18,600,000	17,200,000		64,000,000.0
Cost of sales	1,700,000	1,500,000	4,400,000	4,800,000
Program cost amortization	7,400,000	7,900,000	21,000,000.0	24,500,000
Royalties	(10,800,000)	(15,700,000)	(30,700,000)	(40,900,000)
Advertising	200,000	500,000	400,000	800,000
Amortization of intangible assets	4,700,000	3,800,000	14,300,000	11,400,000
Distribution	0	0	0	0
Managed expense	7,900,000	9,400,000	49,300,000	48,800,000
Operating profit (loss)	7,500,000	9,800,000	2,600,000	14,600,000
Entertainment | Intersegment Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 12,300,000	$ 17,200,000	$ 35,700,000	$ 37,700,000