Goodwill and Intangible Assets, Net - Schedule of Carrying Value of Goodwill, by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 3,639	$ 3,544
Acquisitions	10	90
Other	(2)	5
Goodwill, ending balance	3,647	3,639
Operating Segments | Cable Network Programming
Goodwill [Roll Forward]
Goodwill, beginning balance	1,045	1,044
Acquisitions	0	1
Other	0	0
Goodwill, ending balance	1,045	1,045
Operating Segments | Television
Goodwill [Roll Forward]
Goodwill, beginning balance	2,340	2,246
Acquisitions	10	89
Other	(2)	5
Goodwill, ending balance	2,348	2,340
Corporate and Other
Goodwill [Roll Forward]
Goodwill, beginning balance	254	254
Acquisitions	0	0
Other	0	0
Goodwill, ending balance	$ 254	$ 254