Investments in Productions and Investments in Acquired Content Rights - Program Costs Amortization (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2021	Jun. 28, 2020	Jun. 27, 2021	Jun. 28, 2020
Product Information [Line Items]
Program cost amortization	$ 110.7	$ 50.6	$ 208.2	$ 182.8
eOne
Product Information [Line Items]
Program cost amortization			208.2
eOne | Production Investment
Product Information [Line Items]
Program cost amortization			180.7
eOne | Content Investment
Product Information [Line Items]
Program cost amortization			$ 27.5