BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2015	Jun. 30, 2015
Short-term investments, securities loaned	$ 360	$ 75
Accounts receivable, allowance for doubtful accounts	384	335
Property and equipment, accumulated depreciation	$ 18,008	$ 17,606
Common stock, shares authorized	24,000,000,000	24,000,000,000
Common stock, outstanding	7,925,000,000	8,027,000,000