Business Combination - Preliminary Allocation of Purchase Price (Details) - USD ($) $ in Thousands	Sep. 27, 2020	Dec. 30, 2019	Dec. 29, 2019	Sep. 29, 2019
Business Acquisition [Line Items]
Goodwill	$ 3,644,118		$ 494,584	$ 485,042
eOne
Business Acquisition [Line Items]
Cash, cash equivalents and restricted cash		$ 183,713
Accounts receivable, net		295,154
Inventories		7,029
Other current assets		285,700
Property, plant and equipment (including right of use assets)		125,672
Intangible assets		1,056,000
Content assets - IIC and IIP		611,290
Other assets		89,719
Short-term borrowings		(11,011)
Current portion of long-term debt		(115,800)
Accounts payable, and accrued liabilities		(702,742)
Long-term debt		(93,851)
Other liabilities		(227,766)
Noncontrolling interests		(64,802)
Estimated fair value of net assets acquired		1,438,305
Goodwill		3,149,337
Total purchase price		4,587,642
eOne | 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 | Revision of Prior Period, Adjustment
Business Acquisition [Line Items]
Cash, cash equivalents and restricted cash		0
Accounts receivable, net		36,093
Inventories		0
Other current assets		(570)
Property, plant and equipment (including right of use assets)		35,333
Intangible assets		751
Content assets - IIC and IIP		(140,234)
Other assets		(93,490)
Short-term borrowings		0
Current portion of long-term debt		(55,267)
Accounts payable, and accrued liabilities		58,344
Long-term debt		55,267
Other liabilities		34,878
Noncontrolling interests		(1,261)
Estimated fair value of net assets acquired		(70,156)
Goodwill		70,156
Total purchase price		$ 0