Goodwill and Intangible Assets, Net - Changes in Carrying Values of Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning	$ 2,892	$ 2,892
Intangible assets not subject to amortization, acquisitions		0
Intangible assets not subject to amortization, ending	2,892	2,892
Finite-lived Intangible Assets [Roll Forward]
Amortizable intangible assets, net, beginning	265	262
Amortizable intangible assets, net, acquisitions		71
Amortizable intangible assets, net, amortization and other	(73)	(68)
Amortizable intangible assets, net, ending	192	265
Total Intangible Assets, Net [Roll Forward]
Total intangible assets, net, beginning	3,157	3,154
Total intangible assets, net, acquisitions		71
Total intangible assets, net, amortization and other	(73)	(68)
Total intangible assets, net, ending	3,084	3,157
Accumulated amortization of amortizable intangible assets	366	292
FCC licenses
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning	2,250	2,250
Intangible assets not subject to amortization, acquisitions		0
Intangible assets not subject to amortization, ending	2,250	2,250
Other
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning	642	642
Intangible assets not subject to amortization, acquisitions		0
Intangible assets not subject to amortization, ending	$ 642	$ 642