Consolidated Statements of Shareholder's Equity and Redeemable Noncontrolling Interests - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Noncontrolling Interests
Beginning balance at Dec. 27, 2020	$ 2,936.7	$ 110.1	$ 2,329.1	$ 4,204.2	$ (195.0)	$ (3,551.7)	$ 40.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Hasbro, Inc.	116.2			116.2
Net earnings attributable to noncontrolling interests	1.3						1.3
Other comprehensive earnings (loss)	(11.4)				(11.4)
Stock-based compensation transactions	(4.7)		(5.8)			1.1
Stock-based compensation expense	16.7		16.7
Dividends declared	(93.6)			(93.6)
Distributions paid to noncontrolling owners and other foreign exchange	(1.3)		(0.4)				(0.9)
Ending balance at Mar. 28, 2021	2,959.9	110.1	2,339.6	4,226.8	(206.4)	(3,550.6)	40.4
Beginning balance at Dec. 27, 2020	24.4
Increase (Decrease) in Temporary Equity [Roll Forward]
Distributions paid to noncontrolling owners and other foreign exchange	(0.4)
Ending balance at Mar. 28, 2021	24.0
Beginning balance at Dec. 26, 2021	3,063.1	110.1	2,428.0	4,257.8	(235.3)	(3,534.7)	37.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Hasbro, Inc.	61.2			61.2
Net earnings attributable to noncontrolling interests	1.2						1.2
Change in put option value	(0.4)		(0.4)
Other comprehensive earnings (loss)	(11.6)				(11.6)
Stock-based compensation transactions	50.9		30.0			20.9
Stock-based compensation expense	18.1		18.1
Dividends declared	(98.1)			(98.1)
Distributions paid to noncontrolling owners and other foreign exchange	(3.7)						(3.7)
Ending balance at Mar. 27, 2022	3,080.7	$ 110.1	$ 2,475.7	$ 4,220.9	$ (246.9)	$ (3,513.8)	$ 34.7
Beginning balance at Dec. 26, 2021	23.9
Increase (Decrease) in Temporary Equity [Roll Forward]
Net earnings attributable to noncontrolling interests	0.5
Distributions paid to noncontrolling owners and other foreign exchange	(0.9)
Ending balance at Mar. 27, 2022	$ 23.5