Business Combination (Details) - USD ($) $ / shares in Units, shares in Millions		1 Months Ended	12 Months Ended
	Dec. 30, 2019	Nov. 30, 2019	Dec. 25, 2022	Dec. 26, 2021	Dec. 27, 2020	Sep. 30, 2019
Business Acquisition [Line Items]
Goodwill			$ 3,470,100,000	$ 3,419,600,000	$ 3,691,700,000
Acquisition and related costs			0	0	218,600,000
Entertainment
Business Acquisition [Line Items]
Goodwill			$ 1,513,900,000	$ 1,527,400,000	2,252,900,000
Senior Notes
Business Acquisition [Line Items]
Debt instrument, face amount		$ 2,400,000,000
Unsecured Debt | $1.0 Billion Term Loan Agreement
Business Acquisition [Line Items]
Debt instrument, face amount						$ 1,000,000,000
eOne Acquisition
Business Acquisition [Line Items]
Total purchase price to be allocated	$ 4,600,000,000
Total purchase price to be allocated	3,800,000,000
Aggregate purchase price, liabilities assumed	800,000,000
Shares issued in business combination (in shares)		10.6
Offering price (in dollars per share)		$ 95.00
Shares issued in business combination value		$ 975,200,000
Goodwill	$ 3,200,000,000
Acquisition and related costs					218,600,000
eOne Acquisition | Entertainment
Business Acquisition [Line Items]
Acquisition and related costs					$ 133,200,000
eOne Acquisition | Senior Notes
Business Acquisition [Line Items]
Debt instrument, face amount		2,400,000,000
eOne Acquisition | Unsecured Debt | $1.0 Billion Term Loan Agreement
Business Acquisition [Line Items]
Debt instrument, face amount		$ 1,000,000,000