Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Earnings [Member]	Treasury Stock [Member]	Total Shareholders' Equity Attributable to Hasbro, Inc. [Member]	Redeemable Noncontrolling Interests [Member]
Balance at Dec. 28, 2014		$ 104,847	$ 806,265	$ 3,630,072	$ (95,454)	$ (2,980,066)	$ 1,465,664	$ 42,730
Net earnings attributable to Hasbro, Inc.	$ 451,838			451,838			451,838
Net Loss Attributable to Noncontrolling Interests	(4,966)							(4,966)
Other comprehensive (loss) earnings	(50,547)				(50,547)		(50,547)
Stock-based compensation transactions			33,558			23,992	57,550
Purchases of common stock						(84,894)	(84,894)
Stock-based compensation expense			53,807			73	53,880
Dividends declared				(229,589)			(229,589)
Contributions From (Distributions To) Noncontrolling Interests, Total							0	2,406
Balance at Dec. 27, 2015		104,847	893,630	3,852,321	(146,001)	(3,040,895)	1,663,902	40,170
Net earnings attributable to Hasbro, Inc.	551,380			551,380			551,380
Net Loss Attributable to Noncontrolling Interests	(18,229)						0	(18,229)
Other comprehensive (loss) earnings	(48,569)				(48,569)		(48,569)
Stock-based compensation transactions			30,230			10,479	40,709
Purchases of common stock						(151,331)	(151,331)
Stock-based compensation expense			61,558			66	61,624
Dividends declared				(254,979)			(254,979)
Contributions From (Distributions To) Noncontrolling Interests, Total							0	763
Balance at Dec. 25, 2016	1,862,736	104,847	985,418	4,148,722	(194,570)	(3,181,681)	1,862,736	22,704
Impact of adoption of ASU 2016-09			916	(697)			219
Net earnings attributable to Hasbro, Inc.	396,607			396,607			396,607
Acquisition of remaining interest in Backflip			22,704				22,704	(22,704)
Net Loss Attributable to Noncontrolling Interests	0						0	0
Other comprehensive (loss) earnings	(44,855)				(44,855)		(44,855)
Stock-based compensation transactions			(13,021)			(16,001)	(29,022)
Purchases of common stock	(150,054)					(150,054)	(150,054)
Stock-based compensation expense			54,588			1,444	56,032
Dividends declared				(284,410)			(284,410)
Contributions From (Distributions To) Noncontrolling Interests, Total							0	0
Balance at Dec. 31, 2017	$ 1,829,957	$ 104,847	$ 1,050,605	$ 4,260,222	$ (239,425)	$ (3,346,292)	$ 1,829,957	$ 0