Goodwill and Intangible Assets, Net - Schedule of Changes in Carrying Values of Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning	$ 2,824	$ 2,892
Intangible assets not subject to amortization, acquisitions	0	0
Intangible assets not subject to amortization, amortization and other	(64)	(68)
Intangible assets not subject to amortization, ending	2,760	2,824
Finite-lived Intangible Assets [Roll Forward]
Amortizable intangible assets, net, beginning	145	146
Amortizable intangible assets, net, acquisitions	2	33
Amortizable intangible assets, net, amortization and other	(37)	(34)
Amortizable intangible assets, net, ending	110	145
Total Intangible Assets, Net [Roll Forward]
Total intangible assets, net, beginning	2,969	3,038
Total intangible assets, net, acquisitions	2	33
Total intangible assets, net, amortization and other	(101)	(102)
Total intangible assets, net, ending	2,870	2,969
Accumulated amortization of amortizable intangible assets	477	441
FCC licenses
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning	2,184	2,250
Intangible assets not subject to amortization, acquisitions	0	0
Intangible assets not subject to amortization, amortization and other	(64)	(66)
Intangible assets not subject to amortization, ending	2,120	2,184
Other
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning	640	642
Intangible assets not subject to amortization, acquisitions	0	0
Intangible assets not subject to amortization, amortization and other	0	(2)
Intangible assets not subject to amortization, ending	$ 640	$ 640