Segment Reporting, Revenue by Brand Portfolio (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2017	Oct. 01, 2017	Jul. 02, 2017	Apr. 02, 2017	Dec. 30, 2018	Dec. 31, 2017	Dec. 25, 2016
Revenue from External Customer [Line Items]
Net revenues by geographical location	$ 1,389,161	$ 1,569,686	$ 904,458	$ 716,341	$ 1,596,111	$ 1,791,502	$ 972,506	$ 849,663	$ 4,579,646	$ 5,209,782	$ 5,019,822
Segment Reporting, Additional Information about Entity's Reportable Segments									For the years ended December 31, 2017 and December 25,2016, net revenues of $122,432 and $47,597, respectively, were reclassified from Emerging Brands to Franchise Brands to conform to the presentation for the year ended December 30, 2018. Hasbro's total gaming category, including all gaming net revenues, most notably MAGIC: THE GATHERING and MONOPOLY, totaled $1,443,164, $1,497,795 and $1,387,077 for the years ended December 30, 2018, December 31, 2017 and December 25, 2016, respectively
Franchise Brands [Member]
Revenue from External Customer [Line Items]
Net revenues by geographical location									$ 2,445,902	2,690,394	2,375,265
Partner Brands [Member]
Revenue from External Customer [Line Items]
Net revenues by geographical location									987,283	1,271,597	1,412,770
Hasbro Gaming [Member]
Revenue from External Customer [Line Items]
Net revenues by geographical location									787,692	893,019	813,433
Emerging Brands [Member]
Revenue from External Customer [Line Items]
Net revenues by geographical location									358,769	354,772	418,354
Total Gaming [Member]
Revenue from External Customer [Line Items]
Net revenues by geographical location									$ 1,443,164	1,497,795	1,387,077
Emerging Brands to Franchise Brands [Member]
Revenue from External Customer [Line Items]
Net revenues by geographical location										$ 122,432	$ 47,597