Consolidated Statements of Shareholders’ Equity and Redeemable Noncontrolling Interests - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock	Non-controlling Interests	Total Shareholders’ Equity	Total Shareholders’ Equity Cumulative Effect, Period of Adoption, Adjustment	Pension and Postretirement Amounts	Pension and Postretirement Amounts Cumulative Effect, Period of Adoption, Adjustment	Gains (Losses) on Derivative Instruments	Gains (Losses) on Derivative Instruments Cumulative Effect, Period of Adoption, Adjustment	Unrealized Holding Gains (Losses) on Available for-Sale Securities	Unrealized Holding Gains (Losses) on Available for-Sale Securities Cumulative Effect, Period of Adoption, Adjustment	Foreign Currency Translation Adjustments	Foreign Currency Translation Adjustments Cumulative Effect, Period of Adoption, Adjustment
Increase (Decrease) in Temporary Equity [Roll Forward]
Accumulated other comprehensive losses						$ (239,425)	$ (21,503)					$ (110,971)	$ (18,065)	$ (32,827)	$ (3,660)	$ 1,034	$ 222	$ (96,661)	$ 0
Beginning balance at Dec. 31, 2017		$ 104,847	$ 1,050,605	$ 4,260,222	$ 21,503	(239,425)	$ (21,503)	$ (3,346,292)		$ 1,829,957	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	$ 220,434			220,434						220,434
Issuance of shares for Saban purchase			198,853					81,544		280,397
Other comprehensive loss	(33,586)					(33,586)				(33,586)
Stock-based compensation transactions			(2,075)					(694)		(2,769)
Purchases of common stock								(250,054)		(250,054)
Stock-based compensation expense			27,676					216		27,892
Dividends declared				(317,785)						(317,785)
Ending balance at Dec. 30, 2018		104,847	1,275,059	4,184,374		(294,514)		(3,515,280)		1,754,486
Beginning balance at Dec. 31, 2017									$ 0
Ending balance at Dec. 30, 2018									0
Increase (Decrease) in Temporary Equity [Roll Forward]
Accumulated other comprehensive losses						(294,514)						(143,134)		1,549		(744)		(152,185)
Net earnings	520,454			520,454						520,454
Equity issuance, net of fees		5,296	969,889							975,185
Other comprehensive loss	110,294					110,294				110,294
Stock-based compensation transactions			2,970					15,693		18,663
Purchases of common stock								(61,387)		(61,387)
Stock-based compensation expense			27,808					236		28,044
Dividends declared				(350,209)						(350,209)
Ending balance at Dec. 29, 2019	2,995,530	110,143	2,275,726	4,354,619		(184,220)		(3,560,738)		2,995,530
Ending balance at Dec. 29, 2019	0								0
Increase (Decrease) in Temporary Equity [Roll Forward]
Accumulated other comprehensive losses	(184,220)					(184,220)						(36,129)		$ (5,232)		(230)		(142,629)
Net earnings	222,519			222,519
Noncontrolling interests related to acquisition of Entertainment One Ltd.	43,341								43,341
Net earnings attributable to noncontrolling interests	2,478								2,478
Buyout of noncontrolling interest	606		606
Other comprehensive loss	(10,733)					(10,733)				(10,733)
Stock-based compensation transactions			1,864					8,688		10,552
Stock-based compensation expense	49,748		49,447					301
Dividends declared				(372,954)						(372,954)
Distributions paid to noncontrolling owners and other foreign exchange	(4,350)		1,421						(5,771)
Ending balance at Dec. 27, 2020	2,936,737	$ 110,143	$ 2,329,064	$ 4,204,184		(194,953)		$ (3,551,749)	40,048	$ 2,936,737
Increase (Decrease) in Temporary Equity [Roll Forward]
Noncontrolling interests related to acquisition of Entertainment One Ltd.	26,241
Net earnings attributable to noncontrolling interests	444
Distributions paid to noncontrolling owners and other foreign exchange	(2,259)
Ending balance at Dec. 27, 2020	24,426								$ 24,426
Increase (Decrease) in Temporary Equity [Roll Forward]
Accumulated other comprehensive losses	$ (194,953)					$ (194,953)						$ (40,717)				$ 410		$ (132,542)