Quarterly Financial Data (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 28, 2014	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Quarterly Financial Data (Unaudited) [Abstract]
Net revenues	$ 1,298,593	$ 1,469,899	$ 829,262	$ 679,453	$ 1,281,773	$ 1,370,348	$ 766,342	$ 663,694	$ 4,277,207	$ 4,082,157
Operating profit	223,549	285,814	82,564	43,448	183,672	198,706	74,088	10,627	635,375	467,093	551,785
Earnings (loss) before income taxes	205,422	244,054	64,517	25,995	161,326	155,913	51,076	(16,493)	539,988	351,822
Net earnings	168,821	180,155	32,820	31,514	128,276	125,843	36,480	(6,671)	413,310	283,928	335,999
Net earnings attributable to Hasbro, Inc.	$ 169,911	$ 180,457	$ 33,475	$ 32,087	$ 129,815	$ 126,574	$ 36,480	$ (6,671)	$ 415,930	$ 286,198	$ 335,999
Net earnings (loss) [Abstract]
Basic (in dollars per share)	$ 1.35	$ 1.42	$ 0.26	$ 0.24	$ 0.99	$ 0.97	$ 0.28	$ (0.05)	$ 3.24	$ 2.20	$ 2.58
Diluted (in dollars per share)	$ 1.34	$ 1.40	$ 0.26	$ 0.24	$ 0.98	$ 0.96	$ 0.28	$ (0.05)	$ 3.20	$ 2.17	$ 2.55
Market price [Abstract]
High (in dollars per share)	$ 59.42	$ 55.78	$ 56.91	$ 55.67	$ 54.55	$ 49.75	$ 48.97	$ 44.14	$ 59.42	$ 54.55
Low (in dollars per share)	$ 52.74	$ 48.01	$ 51.08	$ 47.48	$ 45.44	$ 44.69	$ 42.57	$ 35.00	$ 47.48	$ 35.00
Cash dividends declared (in dollars per share)	$ 0.43	$ 0.43	$ 0.43	$ 0.43	$ 0.40	$ 0.40	$ 0.40	$ 0.40	$ 1.72	$ 1.60	$ 1.44