Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Earnings Per Share (Thousands of Dollars and Shares Except Per Share Data) [Abstract]
Net Earnings Attributable to Hasbro, Inc.	$ 180,457	$ 126,574	$ 246,019	$ 156,383
Basic [Abstract]
Adjusted net earnings (basic) (in dollars)	180,457	126,574	246,019	156,383
Average shares outstanding (in shares)	127,293	130,253	129,302	129,972
Equivalent shares (basic) (in shares)	127,293	130,253	129,302	129,972
Net earnings attributable to Hasbro, Inc. per common share-basic (in dollars per share)	$ 1.42	$ 0.97	$ 1.90	$ 1.20
Diluted [Abstract]
Adjusted net earnings (Diluted) (in dollars)	$ 180,457	$ 126,574	$ 246,019	$ 156,383
Average shares outstanding (in shares)	127,293	130,253	129,302	129,972
Effect of dilutive securities:
Options and other share-based awards (in shares)	1,410	1,592	1,487	1,601
Equivalent shares (diluted) (in shares)	128,703	131,845	130,789	131,573
Net earnings attributable to Hasbro, Inc. per common share-diluted (in dollars per share)	$ 1.40	$ 0.96	$ 1.88	$ 1.19
Options to acquire shares totaling excluded as antidilutive	675	775	675	1,266