Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014
Earnings Per Share (Thousands of Dollars and Shares Except Per Share Data) [Abstract]
Net Earnings Attributable to Hasbro, Inc.	$ 207,599	$ 180,457	$ 276,075	$ 246,019
Basic [Abstract]
Adjusted net earnings (basic) (in dollars)	$ 207,599	$ 180,457	$ 276,075	$ 246,019
Average shares outstanding (in shares)	125,100	127,293	125,016	129,302
Equivalent shares (basic) (in shares)	125,100	127,293	125,016	129,302
Net earnings attributable to Hasbro, Inc. per common share-basic (in dollars per share)	$ 1.66	$ 1.42	$ 2.21	$ 1.90
Diluted [Abstract]
Adjusted net earnings (Diluted) (in dollars)	$ 207,599	$ 180,457	$ 276,075	$ 246,019
Average shares outstanding (in shares)	125,100	127,293	125,016	129,302
Effect of dilutive securities:
Options and other share-based awards (in shares)	1,817	1,410	1,673	1,487
Equivalent shares (diluted) (in shares)	126,917	128,703	126,689	130,789
Net earnings attributable to Hasbro, Inc. per common share-diluted (in dollars per share)	$ 1.64	$ 1.40	$ 2.18	$ 1.88
Options to acquire shares totaling excluded as antidilutive	0	675	261	675