Consolidated Statements of Comprehensive Earnings (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2025	Dec. 29, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net (loss) earnings	$ (318.2)	$ 394.4	$ (1,487.8)
Other comprehensive earnings (loss):
Foreign currency translation adjustments	40.1	(48.8)	59.4
Net (losses) gains on hedging activities, net of tax	(12.5)	7.3	(8.6)
Changes in unrecognized pension amounts, net of tax	0.6	(2.9)	(0.9)
Reclassifications to earnings, net of tax:
Net losses on hedging activities	0.5	0.4	3.8
Amortization of unrecognized pension and postretirement amounts	0.2	(0.9)	(0.3)
Other comprehensive earnings (loss), net of tax	28.9	(44.9)	53.4
Total comprehensive (loss) earnings, net of tax	(289.3)	349.5	(1,434.4)
Total comprehensive earnings attributable to noncontrolling interests	4.2	8.8	1.5
Total comprehensive (loss) earnings attributable to Hasbro, Inc.	$ (293.5)	$ 340.7	$ (1,435.9)