Segment Information - Summary of Revenues by Segment by Component to Consolidated (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Disaggregation Of Revenue [Line Items]
Revenues	$ 3,207	$ 3,192
Cable Network Programming
Disaggregation Of Revenue [Line Items]
Revenues	1,387	1,431
Cable Network Programming | Affiliate fee
Disaggregation Of Revenue [Line Items]
Revenues	1,005	1,029
Cable Network Programming | Advertising
Disaggregation Of Revenue [Line Items]
Revenues	290	316
Cable Network Programming | Other
Disaggregation Of Revenue [Line Items]
Revenues	92	86
Television
Disaggregation Of Revenue [Line Items]
Revenues	1,780	1,714
Television | Affiliate fee
Disaggregation Of Revenue [Line Items]
Revenues	735	682
Television | Advertising
Disaggregation Of Revenue [Line Items]
Revenues	910	905
Television | Other
Disaggregation Of Revenue [Line Items]
Revenues	135	127
Other, Corporate and Eliminations
Disaggregation Of Revenue [Line Items]
Revenues	$ 40	$ 47