CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 42	$ 238	$ (49)	$ 205
Other comprehensive income (loss):
Foreign currency translation adjustments	14	(43)	32	(82)
Unrealized holding gains (losses) on securities	3	0	11	0
Net gain (loss) on defined benefit pension plans	0	0	(34)	0
Reclassification from other comprehensive income (loss) to selling, general and administrative expense for amortization of actuarial (gains) losses on defined benefit pension plans	2	3	7	9
Total other comprehensive income (loss) before income taxes	19	(40)	16	(73)
Income tax (provision) benefit related to net gains and losses on defined benefit pension plans	0	0	14	0
Income tax (provision) benefit related to reclassified amounts of net periodic costs on defined benefit pension plans	(1)	0	(3)	(2)
Total other comprehensive income (loss)	18	(40)	27	(75)
Total comprehensive income (loss)	$ 60	$ 198	$ (22)	$ 130