Business Combination - Preliminary Allocation of Purchase Price (Details) - USD ($) $ in Thousands	Dec. 27, 2020	Dec. 30, 2019	Dec. 29, 2019	Dec. 30, 2018
Business Acquisition [Line Items]
Goodwill	$ 3,691,709		$ 494,584	$ 485,881
eOne Acquisition
Business Acquisition [Line Items]
Cash, cash equivalents and restricted cash		$ 174,694
Accounts receivable, net		258,439
Inventories		7,029
Other current assets		273,302
Property, plant and equipment (including right of use assets)		125,672
Intangible assets		1,056,000
Content assets - IIC and IIP		564,828
Other assets		124,521
Short-term borrowings		(15,388)
Current portion of long-term debt		(121,031)
Accounts payable, and accrued liabilities		(660,842)
Long-term debt		(81,839)
Other liabilities		(243,557)
Noncontrolling interests		(69,582)
Estimated fair value of net assets acquired		1,392,246
Goodwill	$ 3,195,749	3,195,396
Total purchase price		4,587,642
eOne Acquisition | Previously Reported
Business Acquisition [Line Items]
Cash, cash equivalents and restricted cash		183,713
Accounts receivable, net		259,061
Inventories		7,029
Other current assets		286,270
Property, plant and equipment (including right of use assets)		90,339
Intangible assets		1,055,249
Content assets - IIC and IIP		751,524
Other assets		183,209
Short-term borrowings		(11,011)
Current portion of long-term debt		(60,533)
Accounts payable, and accrued liabilities		(761,086)
Long-term debt		(149,118)
Other liabilities		(262,644)
Noncontrolling interests		(63,541)
Estimated fair value of net assets acquired		1,508,461
Goodwill		3,079,181
Total purchase price		4,587,642
eOne Acquisition | Revision of Prior Period, Adjustment
Business Acquisition [Line Items]
Cash, cash equivalents and restricted cash		(9,019)
Accounts receivable, net		(622)
Inventories		0
Other current assets		(12,968)
Property, plant and equipment (including right of use assets)		35,333
Intangible assets		751
Content assets - IIC and IIP		(186,696)
Other assets		(58,688)
Short-term borrowings		(4,377)
Current portion of long-term debt		(60,498)
Accounts payable, and accrued liabilities		100,244
Long-term debt		67,279
Other liabilities		19,087
Noncontrolling interests		(6,041)
Estimated fair value of net assets acquired		(116,215)
Goodwill		116,215
Total purchase price		$ 0