Segment Reporting - Other Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 29, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Product Information [Line Items]
Net revenues	$ 1,428,007	$ 1,575,173	$ 984,537	$ 732,510	$ 1,389,161	$ 1,569,686	$ 904,458	$ 716,341	$ 4,720,227	$ 4,579,646	$ 5,209,782
Wal-mart stores, Inc.
Product Information [Line Items]
Concentration risk, percentage									18.00%	20.00%	19.00%
Target corporation
Product Information [Line Items]
Concentration risk, percentage									9.00%	9.00%	9.00%
Amazon.com. Inc.
Product Information [Line Items]
Concentration risk, percentage									8.00%
Toys RUS, Inc.
Product Information [Line Items]
Concentration risk, percentage											9.00%
Emerging brands to franchise brands
Product Information [Line Items]
Net revenues											$ 122,432
Class Of principal product hasbro total gaming
Product Information [Line Items]
Net revenues									$ 1,528,283	$ 1,443,164	$ 1,497,795