Segment Information - Schedule of Revenues by Segment by Component to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Disaggregation Of Revenue [Line Items]
Revenues	$ 4,571	$ 3,738
Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	4,516	3,712
Operating Segments \| Cable Network Programming
Disaggregation Of Revenue [Line Items]
Revenues	1,803	1,662
Operating Segments \| Television
Disaggregation Of Revenue [Line Items]
Revenues	2,713	2,050
Operating Segments \| Distribution \| Cable Network Programming
Disaggregation Of Revenue [Line Items]
Revenues	1,200	1,090
Operating Segments \| Distribution \| Television
Disaggregation Of Revenue [Line Items]
Revenues	850	821
Operating Segments \| Advertising \| Cable Network Programming
Disaggregation Of Revenue [Line Items]
Revenues	373	345
Operating Segments \| Advertising \| Television
Disaggregation Of Revenue [Line Items]
Revenues	1,708	1,067
Operating Segments \| Content and other \| Cable Network Programming
Disaggregation Of Revenue [Line Items]
Revenues	230	227
Operating Segments \| Content and other \| Television
Disaggregation Of Revenue [Line Items]
Revenues	155	162
Corporate and Other
Disaggregation Of Revenue [Line Items]
Revenues	246	89
Eliminations
Disaggregation Of Revenue [Line Items]
Revenues	$ (191)	$ (63)