BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2025	Jun. 30, 2025
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 687	$ 944
Property and equipment, accumulated depreciation	$ 98,880	$ 93,653
Common stock, shares authorized	24,000,000,000	24,000,000,000
Common stock, outstanding	7,434,000,000	7,434,000,000