Segment Information - Summary of Revenues by Segment by Component to Consolidated (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Disaggregation Of Revenue [Line Items]
Revenues	$ 4,084	$ 3,455	$ 11,881	$ 10,941
Cable Network Programming
Disaggregation Of Revenue [Line Items]
Revenues	1,570	1,583	4,633	4,637
Cable Network Programming | Affiliate fee
Disaggregation Of Revenue [Line Items]
Revenues	1,093	1,097	3,148	3,162
Cable Network Programming | Advertising
Disaggregation Of Revenue [Line Items]
Revenues	316	339	1,083	1,104
Cable Network Programming | Other
Disaggregation Of Revenue [Line Items]
Revenues	161	147	402	371
Television
Disaggregation Of Revenue [Line Items]
Revenues	2,475	1,820	7,123	6,160
Television | Affiliate fee
Disaggregation Of Revenue [Line Items]
Revenues	764	700	2,132	1,990
Television | Advertising
Disaggregation Of Revenue [Line Items]
Revenues	1,559	969	4,516	3,742
Television | Other
Disaggregation Of Revenue [Line Items]
Revenues	152	151	475	428
Other, Corporate and Eliminations
Disaggregation Of Revenue [Line Items]
Revenues	$ 39	$ 52	$ 125	$ 144