Assets Held for Sale - Schedule of Assets and Liabilities Held for Sale (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2023	Sep. 25, 2022	Oct. 01, 2023	Sep. 25, 2022
Liabilities:
Pre-tax non-cash loss on assets held for sale	$ 473.0	$ 23.1	$ 473.0	$ 23.1
eOne Film and TV | Disposal Group, Held-for-sale
Assets:
Cash and cash equivalents	70.4		70.4
Restricted cash	4.1		4.1
Accounts receivable, less allowance for doubtful accounts	85.2		85.2
Allowance for doubtful accounts	1.4		1.4
Inventories	2.7		2.7
Prepaid expenses and other current assets	402.6		402.6
Property, plant and equipment, less accumulated depreciation	53.6		53.6
Accumulate depreciation	21.3		21.3
Other assets	891.5		891.5
Write-down loss allowance	(457.3)		(457.3)
Total assets held for sale	1,048.7		1,048.7
Liabilities:
Short-term borrowings	141.9		141.9
Current portion of long-term debt	8.2		8.2
Accounts payable and accrued liabilities	404.4		404.4
Long-term debt	0.8		0.8
Other liabilities	52.1		52.1
Total liabilities held for sale	607.4		607.4
Write-down loss allowance			457.3
Currency translation losses on the classification of held for sale			15.7
Pre-tax non-cash loss on assets held for sale	$ 473.0		$ 473.0