Segment Reporting - Total Assets by Segments (Details) - USD ($) $ in Thousands	Sep. 27, 2020	Dec. 29, 2019	Sep. 29, 2019
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 10,703,177	$ 8,855,628	$ 5,554,624
Corporate and Eliminations
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	(5,680,530)	(901,580)	(4,458,181)
U.S. and Canada | Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	3,835,054	3,244,950	3,331,125
International | Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,234,562	2,482,170	2,394,488
Entertainment, Licensing and Digital | Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,162,684	695,898	1,031,906
eOne | Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	5,686,389	0	0
Global Operations | Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 3,465,018	$ 3,334,190	$ 3,255,286