Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2016	Jun. 28, 2015	Jun. 26, 2016	Jun. 28, 2015
Earnings Per Share (Thousands of Dollars and Shares Except Per Share Data) [Abstract]
Net Earnings Attributable to Hasbro, Inc.	$ 52,106	$ 41,809	$ 100,857	$ 68,476
Basic [Abstract]
Average shares outstanding (in shares)	125,475	125,093	125,371	124,973
Equivalent shares (basic) (in shares)	125,475	125,093	125,371	124,973
Net earnings attributable to Hasbro, Inc. per common share-basic (in dollars per share)	$ 0.42	$ 0.33	$ 0.8	$ 0.55
Diluted [Abstract]
Average shares outstanding (in shares)	125,475	125,093	125,371	124,973
Effect of dilutive securities:
Options and other share-based awards (in shares)	1,566	1,713	1,624	1,601
Equivalent shares (diluted) (in shares)	127,041	126,806	126,995	126,574
Net earnings attributable to Hasbro, Inc. per common share-diluted (in dollars per share)	$ 0.41	$ 0.33	$ 0.79	$ 0.54
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	0	492	391