BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2016	Jun. 30, 2016
Short-term investments, securities loaned	$ 1,230	$ 204
Accounts receivable, allowance for doubtful accounts	340	426
Property and equipment, accumulated depreciation	$ 21,888	$ 19,800
Common stock, shares authorized	24,000,000,000	24,000,000,000
Common stock, outstanding	7,730,000,000	7,808,000,000