Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 27, 2015	Sep. 27, 2015	Jun. 28, 2015	Mar. 29, 2015	Dec. 28, 2014	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 27, 2015	Dec. 28, 2014	Dec. 29, 2013
Quarterly Financial Data (Unaudited) [Abstract]
Net revenues	$ 1,465,354	$ 1,470,997	$ 797,658	$ 713,500	$ 1,298,593	$ 1,469,899	$ 829,262	$ 679,453	$ 4,447,509	$ 4,277,207
Operating profit	258,701	303,527	75,500	54,205	223,549	285,814	82,564	43,448	691,933	635,375	$ 467,093
Earnings (loss) before income taxes	231,337	284,617	53,646	34,315	205,422	244,054	64,517	25,995	603,915	539,988
Net earnings	174,394	206,375	40,282	25,821	168,821	180,155	32,820	31,514	446,872	413,310	283,928
Net earnings attributable to Hasbro, Inc.	$ 175,763	$ 207,599	$ 41,809	$ 26,667	$ 169,911	$ 180,457	$ 33,475	$ 32,087	$ 451,838	$ 415,930	$ 286,198
Net earnings (loss) [Abstract]
Basic (in dollars per share)	$ 1.41	$ 1.66	$ 0.33	$ 0.21	$ 1.35	$ 1.42	$ 0.26	$ 0.24	$ 3.61	$ 3.24	$ 2.20
Diluted (in dollars per share)	1.39	1.64	0.33	0.21	1.34	1.40	0.26	0.24	3.57	3.20	2.17
Market price [Abstract]
High (in dollars per share)	79.93	84.42	78.91	63.47	59.42	55.78	56.91	55.67	84.42	59.42
Low (in dollars per share)	64.91	60.38	61.13	51.42	52.74	48.01	51.08	47.48	51.42	47.48
Cash dividends declared (in dollars per share)	$ 0.46	$ 0.46	$ 0.46	$ 0.46	$ 0.43	$ 0.43	$ 0.43	$ 0.43	$ 1.84	$ 1.72	$ 1.60