eOne Investments in Productions and Investments in Acquired Content Rights - Program Costs Amortization (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 29, 2020	Mar. 31, 2019
Product Information [Line Items]
Program cost amortization	$ 132,146	$ 6,575
eOne
Product Information [Line Items]
Program cost amortization	123,383
eOne \| Production Investment
Product Information [Line Items]
Program cost amortization	83,404
eOne \| Content Investment
Product Information [Line Items]
Program cost amortization	$ 39,979

The amount of expense recognized in the current period related to program production costs which are capitalized by the Company as they are incurred and amortized using the individual-film-forecast method, whereby these costs are amortized in the proportion that the current period's revenues bear to management's estimate of total ultimate revenues as of the beginning of such period related to the program.

No definition available.

Name:	has_ProgramProductionCostAmortization
Namespace Prefix:	has_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration