Stockholders' Equity - Schedule of Repurchases of Common Stock (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Stockholders Equity [Line Items]
Total cost of repurchases	$ 2,020	$ 1,010	$ 1,010
Class A and Class B Common Stock
Stockholders Equity [Line Items]
Total cost of repurchases	$ 2,000	$ 1,000	$ 1,000
Total number of shares repurchased (in shares)	32	21	40