Consolidated Statements of Comprehensive Earnings - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Statement of Comprehensive Income [Abstract]
Net earnings	$ 219,983	$ 212,949	$ 119,275	$ 253,109
Other comprehensive earnings (losses):
Foreign currency translation adjustments, net of tax	40,821	(16,447)	(98,144)	(6,120)
Unrealized holding (losses) gains on available-for-sale securities, net of tax	(809)	(155)	1,315	400
Net (losses) gains on cash flow hedging activities, net of tax	(5,655)	9,514	15,670	14,027
Changes in unrecognized pension amounts, net of tax	0	0	0	19,589
Reclassifications to earnings, net of tax:
Net gains on cash flow hedging activities	(6,833)	(5,392)	(15,775)	(10,188)
Amortization of unrecognized pension and postretirement amounts	274	279	824	5,578
Settlement of U.S. defined benefit plan	0	0	0	85,852
Total other comprehensive earnings (loss), net of tax	27,798	(12,201)	(96,110)	109,138
Total comprehensive earnings (loss) attributable to noncontrolling interests	(915)	0	1,929	0
Total comprehensive earnings attributable to Hasbro, Inc.	$ 248,696	$ 200,748	$ 21,236	$ 362,247