BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2017	Jun. 30, 2016
Short-term investments, securities loaned	$ 3,694	$ 204
Accounts receivable, allowance for doubtful accounts	405	426
Property and equipment, accumulated depreciation	$ 24,179	$ 19,800
Common stock, shares authorized	24,000,000,000	24,000,000,000
Common stock, outstanding	7,708,000,000	7,808,000,000