CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) [Abstract]
Settlements tax	$ (19)	$ (7)	$ (56)	$ 19
Ineffectiveness tax		(1)
Change in fair value of derivative instruments tax	$ 5	$ 32	13	$ (1)
Amortization of prior service cost and net loss included in net periodic pension cost tax			$ 1