Segment Information - Schedule of Revenues by Segment by Component to Consolidated (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Disaggregation Of Revenue [Line Items]
Revenues	$ 13,980	$ 14,913	$ 13,974
Corporate and Other
Disaggregation Of Revenue [Line Items]
Revenues	209	217	233
Eliminations
Disaggregation Of Revenue [Line Items]
Revenues	(59)	(57)	(41)
Cable Network Programming | Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	5,955	6,043	6,097
Cable Network Programming | Affiliate fee | Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	4,188	4,175	4,205
Cable Network Programming | Advertising | Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	1,262	1,403	1,462
Cable Network Programming | Other | Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	505	465	430
Television | Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	7,875	8,710	7,685
Television | Affiliate fee | Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	3,136	2,876	2,673
Television | Advertising | Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	4,182	5,204	4,440
Television | Other | Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	$ 557	$ 630	$ 572