Goodwill and Intangible Assets, Net (Schedule of Carrying Value of Goodwill, by Segment) (Details) - USD ($) $ in Millions		12 Months Ended
		Jun. 30, 2021	Jun. 30, 2020
Goodwill [Roll Forward]
Goodwill, beginning balance		$ 3,409	$ 2,691
Acquisitions	[1]	32	729
Disposals	[1]	(6)	(11)
Goodwill, ending balance		3,435	3,409
Operating Segments | Cable Network Programming Segment
Goodwill [Roll Forward]
Goodwill, beginning balance		1,032	987
Acquisitions	[1]	32	45
Disposals	[1]	(5)	0
Goodwill, ending balance		1,059	1,032
Operating Segments | Television Segment
Goodwill [Roll Forward]
Goodwill, beginning balance		2,155	1,704
Acquisitions	[1]	0	462
Disposals	[1]	0	(11)
Goodwill, ending balance		2,155	2,155
Operating Segments | Other, Corporate and Eliminations Segment
Goodwill [Roll Forward]
Goodwill, beginning balance		222	0
Acquisitions	[1]	0	222
Disposals	[1]	(1)	0
Goodwill, ending balance		$ 221	$ 222

[1] See Note 3—Acquisitions, Disposals and Other Transactions under the heading “Acquisitions and Disposals.”