Segment Information - Schedule of Revenues by Segment by Component to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended
Sep. 30, 2025	Sep. 30, 2024
Disaggregation Of Revenue [Line Items]
Revenues	$ 3,738	$ 3,564
Corporate and Other
Disaggregation Of Revenue [Line Items]
Revenues	89	65
Eliminations
Disaggregation Of Revenue [Line Items]
Revenues	(63)	(51)
Cable Network Programming \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	1,662	1,597
Cable Network Programming \| Distribution \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	1,090	1,062
Cable Network Programming \| Advertising \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	345	321
Cable Network Programming \| Content and other \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	227	214
Television \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	2,050	1,953
Television \| Distribution \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	821	806
Television \| Advertising \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	1,067	1,008
Television \| Content and other \| Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	$ 162	$ 139

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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