Stockholders' Equity - Summary of Repurchases of Common Stock (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Stockholders Equity [Line Items]
Total cost of repurchases	$ 2,014	$ 1,000	$ 1,001
Class A and Class B Common Stock
Stockholders Equity [Line Items]
Total cost of repurchases	$ 2,000	$ 1,000	$ 1,001
Total number of shares repurchased	54	27	31