Segment Information - Schedule of Revenues by Segment by Component to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Disaggregation Of Revenue [Line Items]
Revenues	$ 5,182	$ 5,078	$ 8,920	$ 8,642
Operating Segments | Cable Network Programming
Disaggregation Of Revenue [Line Items]
Revenues	2,275	2,165	3,937	3,762
Operating Segments | Television
Disaggregation Of Revenue [Line Items]
Revenues	2,937	2,961	4,987	4,914
Operating Segments | Distribution | Cable Network Programming
Disaggregation Of Revenue [Line Items]
Revenues	1,163	1,109	2,253	2,171
Operating Segments | Distribution | Television
Disaggregation Of Revenue [Line Items]
Revenues	831	824	1,652	1,630
Operating Segments | Advertising | Cable Network Programming
Disaggregation Of Revenue [Line Items]
Revenues	491	460	836	781
Operating Segments | Advertising | Television
Disaggregation Of Revenue [Line Items]
Revenues	1,964	1,962	3,031	2,970
Operating Segments | Content and other | Cable Network Programming
Disaggregation Of Revenue [Line Items]
Revenues	621	596	848	810
Operating Segments | Content and other | Television
Disaggregation Of Revenue [Line Items]
Revenues	142	175	304	314
Corporate and Other
Disaggregation Of Revenue [Line Items]
Revenues	124	58	213	123
Eliminations
Disaggregation Of Revenue [Line Items]
Revenues	$ (154)	$ (106)	$ (217)	$ (157)