Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Summary Of Significant Accounting Policies [Line Items]
Non-cash impairment charge for intangible assets	$ 64	$ 68	$ 0
Advertising expense	895	694	$ 646
FCC licenses
Summary Of Significant Accounting Policies [Line Items]
Non-cash impairment charge for intangible assets	$ 64	$ 70
Fair carrying value less than (percent)	10.00%	10.00%
FCC licenses | Measurement Input, Discount Rate
Summary Of Significant Accounting Policies [Line Items]
Measurement input increase (decrease) (percent)	0.50%
Aggregate fair value less than carrying value	$ 125
FCC licenses | Measurement Input, Long-Term Revenue Growth Rate
Summary Of Significant Accounting Policies [Line Items]
Measurement input increase (decrease) (percent)	(0.50%)
Aggregate fair value less than carrying value	$ 90
Class A Common Stock
Summary Of Significant Accounting Policies [Line Items]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Class B Common Stock
Summary Of Significant Accounting Policies [Line Items]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Minimum | Building
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	3 years
Minimum | Machinery and Equipment
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	3 years
Minimum | Software, In-Development, Internally Developed, and Purchased
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	3 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Finite-lived intangible asset, useful life	10 years
Maximum | Building
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	40 years
Maximum | Machinery and Equipment
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	10 years
Maximum | Software, In-Development, Internally Developed, and Purchased
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	5 years