Segment Information - Schedule of Revenues by Segment by Component to Consolidated (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Disaggregation Of Revenue [Line Items]
Total revenues	$ 17,126	$ 16,300	$ 13,980
Operating Segments
Disaggregation Of Revenue [Line Items]
Total revenues	17,014	16,255	13,830
Corporate and Other
Disaggregation Of Revenue [Line Items]
Total revenues	526	244	209
Eliminations
Disaggregation Of Revenue [Line Items]
Total revenues	(414)	(199)	(59)
Cable Network Programming | Operating Segments
Disaggregation Of Revenue [Line Items]
Total revenues	7,348	6,930	5,955
Cable Network Programming | Distribution | Operating Segments
Disaggregation Of Revenue [Line Items]
Total revenues	4,662	4,440	4,291
Cable Network Programming | Advertising | Operating Segments
Disaggregation Of Revenue [Line Items]
Total revenues	1,687	1,531	1,262
Cable Network Programming | Content and other | Operating Segments
Disaggregation Of Revenue [Line Items]
Total revenues	999	959	402
Television | Operating Segments
Disaggregation Of Revenue [Line Items]
Total revenues	9,666	9,325	7,875
Television | Distribution | Operating Segments
Disaggregation Of Revenue [Line Items]
Total revenues	3,346	3,340	3,136
Television | Advertising | Operating Segments
Disaggregation Of Revenue [Line Items]
Total revenues	5,652	5,334	4,182
Television | Content and other | Operating Segments
Disaggregation Of Revenue [Line Items]
Total revenues	$ 668	$ 651	$ 557