CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 169	$ 343
Common stock, par value (in dollars per share)	$ 0.000001	$ 0.000001
Common stock, shares authorized	2,400,000,000	2,400,000,000
Common stock, shares issued	1,169,949,406	1,163,179,140
Treasury stock, shares	428,676,471	428,676,471