Segment Information - Schedule of Revenues by Segment by Component to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Disaggregation Of Revenue [Line Items]
Revenues	$ 3,994	$ 4,371	$ 12,914	$ 13,013
Operating Segments \| Cable Network Programming
Disaggregation Of Revenue [Line Items]
Revenues	1,741	1,636	5,678	5,398
Operating Segments \| Television
Disaggregation Of Revenue [Line Items]
Revenues	2,197	2,704	7,184	7,618
Operating Segments \| Distribution \| Cable Network Programming
Disaggregation Of Revenue [Line Items]
Revenues	1,233	1,169	3,486	3,340
Operating Segments \| Distribution \| Television
Disaggregation Of Revenue [Line Items]
Revenues	858	870	2,510	2,500
Operating Segments \| Advertising \| Cable Network Programming
Disaggregation Of Revenue [Line Items]
Revenues	390	372	1,226	1,153
Operating Segments \| Advertising \| Television
Disaggregation Of Revenue [Line Items]
Revenues	1,166	1,664	4,197	4,634
Operating Segments \| Content and other \| Cable Network Programming
Disaggregation Of Revenue [Line Items]
Revenues	118	95	966	905
Operating Segments \| Content and other \| Television
Disaggregation Of Revenue [Line Items]
Revenues	173	170	477	484
Corporate and Other
Disaggregation Of Revenue [Line Items]
Revenues	152	58	365	181
Eliminations
Disaggregation Of Revenue [Line Items]
Revenues	$ (96)	$ (27)	$ (313)	$ (184)