Consolidated Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 25, 2022	Dec. 26, 2021
Income Statement [Abstract]
Net revenues	$ 5,003,300,000	$ 5,856,700,000	$ 6,420,400,000
Costs and expenses:
Cost of sales	1,706,000,000	1,911,800,000	1,927,500,000
Program cost amortization	448,900,000	555,500,000	628,600,000
Royalties	428,300,000	493,000,000.0	620,400,000
Product development	306,900,000	307,900,000	315,700,000
Advertising	358,400,000	387,300,000	506,600,000
Amortization of intangible assets	83,000,000.0	105,300,000	116,800,000
Selling, distribution and administration	1,480,400,000	1,666,100,000	1,432,700,000
Impairment of goodwill	1,191,200,000	0	0
Loss on disposal of business	539,000,000.0	22,100,000	108,800,000
Total costs and expenses	6,542,100,000	5,449,000,000	5,657,100,000
Operating profit (loss)	(1,538,800,000)	407,700,000	763,300,000
Non-operating expense (income):
Interest expense	186,300,000	171,000,000.0	179,700,000
Investment Income, Interest	(23,000,000.0)	(11,800,000)	(5,400,000)
Other expense (income), net	7,000,000.0	(13,000,000.0)	7,100,000
Total non-operating expense, net	170,300,000	146,200,000	181,400,000
Total earnings (loss) before income taxes	(1,709,100,000)	261,500,000	581,900,000
Income tax (benefit) expense	(221,300,000)	58,500,000	146,600,000
Net earnings (loss)	(1,487,800,000)	203,000,000.0	435,300,000
Net earnings (loss) attributable to noncontrolling interests	1,500,000	(500,000)	6,600,000
Net earnings (loss) attributable to Hasbro, Inc.	$ (1,489,300,000)	$ 203,500,000	$ 428,700,000
Net earnings (loss) attributable to Hasbro, Inc.
Basic (in dollars per share)	$ (10.73)	$ 1.47	$ 3.11
Diluted (in dollars per share)	(10.73)	1.46	3.10
Cash dividends declared (in dollars per share)	$ 2.80	$ 2.80	$ 2.72