Segment Information - Summary of Revenues by Segment by Component to Consolidated (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Disaggregation Of Revenue [Line Items]
Revenues	$ 13,974	$ 12,909	$ 12,303
Operating Segments | Cable Network Programming
Disaggregation Of Revenue [Line Items]
Revenues	6,097	5,683	5,492
Operating Segments | Cable Network Programming | Affiliate fee
Disaggregation Of Revenue [Line Items]
Revenues	4,205	3,995	3,870
Operating Segments | Cable Network Programming | Advertising
Disaggregation Of Revenue [Line Items]
Revenues	1,462	1,337	1,164
Operating Segments | Cable Network Programming | Other
Disaggregation Of Revenue [Line Items]
Revenues	430	351	458
Operating Segments | Television
Disaggregation Of Revenue [Line Items]
Revenues	7,685	7,048	6,661
Operating Segments | Television | Affiliate fee
Disaggregation Of Revenue [Line Items]
Revenues	2,673	2,440	2,038
Operating Segments | Television | Advertising
Disaggregation Of Revenue [Line Items]
Revenues	4,440	4,094	4,169
Operating Segments | Television | Other
Disaggregation Of Revenue [Line Items]
Revenues	572	514	454
Operating Segments | Other, Corporate and Eliminations
Disaggregation Of Revenue [Line Items]
Revenues	$ 192	$ 178	$ 150