Consolidated Statements of Shareholder's Equity and Redeemable Noncontrolling Interests - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive  Loss	Treasury Stock	Noncontrolling Interests
Beginning balance at Dec. 30, 2018	$ 1,754,486	$ 104,847	$ 1,275,059	$ 4,184,374	$ (294,514)	$ (3,515,280)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss) attributable to Hasbro, Inc.	253,109			253,109
Other comprehensive loss	109,138				109,138
Stock-based compensation transactions	16,676		1,756			14,920
Purchases of common stock	(60,137)					(60,137)
Stock-based compensation expense	24,787		24,551			236
Dividends declared	(257,152)			(257,152)
Ending balance at Sep. 29, 2019	1,840,907	104,847	1,301,366	4,180,331	(185,376)	(3,560,261)	0
Beginning balance at Dec. 30, 2018	0
Ending balance at Sep. 29, 2019	0
Beginning balance at Jun. 30, 2019	1,715,869	104,847	1,290,540	4,053,266	(173,175)	(3,559,609)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss) attributable to Hasbro, Inc.	212,949			212,949
Other comprehensive loss	(12,201)				(12,201)
Stock-based compensation transactions	2,785		1,933			852
Purchases of common stock	(1,504)					(1,504)
Stock-based compensation expense	8,893		8,893			0
Dividends declared	(85,884)			(85,884)
Ending balance at Sep. 29, 2019	1,840,907	104,847	1,301,366	4,180,331	(185,376)	(3,560,261)	0
Beginning balance at Jun. 30, 2019							0
Ending balance at Sep. 29, 2019	0
Beginning balance at Dec. 29, 2019	2,995,530	110,143	2,275,726	4,354,619	(184,220)	(3,560,738)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling interests related to acquisition of Entertainment One Ltd.	38,561						38,561
Net earnings (loss) attributable to Hasbro, Inc.	117,346			117,346
Net earnings (loss) attributable to noncontrolling interests	2,067						2,067
Buyout of noncontrolling interest	606		606
Other comprehensive loss	(96,110)				(96,110)
Stock-based compensation transactions	(4,105)		(4,613)			508
Stock-based compensation expense	40,015		39,714			301
Dividends declared	(279,531)			(279,531)
Distributions paid to noncontrolling owners and other foreign exchange	(5,948)						(5,948)
Ending balance at Sep. 27, 2020	2,808,431	110,143	2,311,433	4,192,434	(280,330)	(3,559,929)	34,680
Beginning balance at Dec. 29, 2019	0
Increase (Decrease) in Temporary Equity [Roll Forward]
Noncontrolling interests related to acquisition of Entertainment One Ltd.	26,241
Net earnings (loss) attributable to noncontrolling interests	(138)
Distributions paid to noncontrolling owners and other foreign exchange	(3,227)
Ending balance at Sep. 27, 2020	22,876
Beginning balance at Jun. 28, 2020	2,642,151	110,143	2,297,267	4,064,715	(308,128)	(3,559,990)	38,144
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss) attributable to Hasbro, Inc.	220,898			220,898
Net earnings (loss) attributable to noncontrolling interests	(901)						(901)
Buyout of noncontrolling interest	606		606
Other comprehensive loss	27,798				27,798
Stock-based compensation transactions	(264)		(325)			61
Stock-based compensation expense	13,885		13,885	0		0
Dividends declared	(93,179)			(93,179)			0
Distributions paid to noncontrolling owners and other foreign exchange	(2,563)						(2,563)
Ending balance at Sep. 27, 2020	2,808,431	$ 110,143	$ 2,311,433	$ 4,192,434	$ (280,330)	$ (3,559,929)	$ 34,680
Beginning balance at Jun. 28, 2020	24,133
Increase (Decrease) in Temporary Equity [Roll Forward]
Net earnings (loss) attributable to noncontrolling interests	(14)
Distributions paid to noncontrolling owners and other foreign exchange	(1,243)
Ending balance at Sep. 27, 2020	$ 22,876