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. 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	0	0	551,380	0	0	551,380	0
Net Loss Attributable to Noncontrolling Interests	(18,229)	0	0	0	0	0	0	(18,229)
Other comprehensive (loss) earnings	(48,569)	0	0	0	(48,569)	0	(48,569)	0
Stock-based compensation transactions		0	30,230	0	0	10,479	40,709	0
Purchases of common stock		0	0	0	0	(151,331)	(151,331)	0
Stock-based compensation expense		0	61,558	0	0	66	61,624	0
Dividends declared		0	0	(254,979)	0	0	(254,979)	0
Contributions From (Distributions To) Noncontrolling Interests, Total		0	0	0	0	0	0	763
Balance at Dec. 25, 2016		104,847	985,418	4,148,722	(194,570)	(3,181,681)	1,862,736	22,704
Cumulative effect of new accounting principle in period of adoption | Impact of adoption of ASU 2016-09 [Member]		0	916	(697)	0	0	219	0
Net earnings attributable to Hasbro, Inc.	396,607	0	0	396,607	0	0	396,607	0
Acquisition of remaining interest in Backflip		0	22,704	0	0	0	22,704	(22,704)
Net Loss Attributable to Noncontrolling Interests	0
Other comprehensive (loss) earnings	(44,855)	0	0	0	(44,855)	0	(44,855)	0
Stock-based compensation transactions		0	(13,021)	0	0	(16,001)	(29,022)	0
Purchases of common stock		0	0	0	0	(150,054)	(150,054)	0
Stock-based compensation expense		0	54,588	0	0	1,444	56,032	0
Dividends declared		0	0	(284,410)	0	0	(284,410)	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
Cumulative effect of new accounting principle in period of adoption | Impact of adoption of ASU 2018-02 [Member]		0	0	21,503	(21,503)	0	0	0
Net earnings attributable to Hasbro, Inc.	220,434	0	0	220,434	0	0	220,434	0
Issuance of Hasbro common shares for Saban purchase		0	198,853	0	0	81,544	280,397	0
Net Loss Attributable to Noncontrolling Interests	0
Other comprehensive (loss) earnings	(33,586)	0	0	0	(33,586)	0	(33,586)	0
Stock-based compensation transactions		0	(2,075)	0	0	(694)	(2,769)	0
Purchases of common stock	250,054	0	0	0	0	(250,054)	(250,054)	0
Stock-based compensation expense		0	27,676	0	0	216	27,892	0
Dividends declared		0	0	(317,785)	0	0	(317,785)	0
Balance at Dec. 30, 2018	$ 1,754,486	$ 104,847	$ 1,275,059	$ 4,184,374	$ (294,514)	$ (3,515,280)	$ 1,754,486	$ 0