Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 27, 2016	Mar. 29, 2015
Earnings Per Share (Thousands of Dollars and Shares Except Per Share Data) [Abstract]
Net Earnings Attributable to Hasbro, Inc.	$ 48,751	$ 26,667
Basic [Abstract]
Average shares outstanding (in shares)	125,266	124,853
Equivalent shares (basic) (in shares)	125,266	124,853
Net earnings attributable to Hasbro, Inc. per common share-basic (in dollars per share)	$ 0.39	$ 0.21
Diluted [Abstract]
Average shares outstanding (in shares)	125,266	124,853
Effect of dilutive securities:
Options and other share-based awards (in shares)	1,682	1,489
Equivalent shares (diluted) (in shares)	126,948	126,342
Net earnings attributable to Hasbro, Inc. per common share-diluted (in dollars per share)	$ 0.38	$ 0.21
Employee Stock Option and Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options to acquire shares totaling excluded as antidilutive	492	782