Segment Information - Schedule of Revenues by Segment by Component to Consolidated (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Disaggregation Of Revenue [Line Items]
Revenues	$ 16,300	$ 13,980	$ 14,913
Corporate and Other
Disaggregation Of Revenue [Line Items]
Revenues	244	209	217
Eliminations
Disaggregation Of Revenue [Line Items]
Revenues	(199)	(59)	(57)
Cable Network Programming \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	6,930	5,955	6,043
Cable Network Programming \| Affiliate fee \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	4,316	4,188	4,175
Cable Network Programming \| Advertising \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	1,531	1,262	1,403
Cable Network Programming \| Other \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	1,083	505	465
Television \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	9,325	7,875	8,710
Television \| Affiliate fee \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	3,340	3,136	2,876
Television \| Advertising \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	5,334	4,182	5,204
Television \| Other \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	$ 651	$ 557	$ 630