Segment Reporting - Total Assets by Segments (Details) - USD ($) $ in Thousands	Jun. 28, 2020	Dec. 29, 2019	Jun. 30, 2019
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 10,222,050	$ 8,855,628	$ 5,038,610
Corporate and Eliminations
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	(5,978,223)	(901,580)	(1,883,036)
U.S. and Canada | Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	3,470,896	3,244,950	2,845,806
International | Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,052,708	2,482,170	2,093,725
Entertainment, Licensing and Digital | Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,018,453	695,898	945,196
eOne | Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	5,713,517	0	0
Global Operations | Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 3,944,699	$ 3,334,190	$ 1,036,919