Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 78	$ 94	$ (165)	$ 249
Other comprehensive income (loss):
Foreign currency translation adjustments	(15)	(28)	(37)	(28)
Securities:
Reclassification of gain to net income	(21)	0	(21)	0
Unrealized loss on securities, before tax	(2)	0	(7)	0
Unrealized loss on securities, tax portion	0	0	2	0
Net change in securities	(23)	0	(26)	0
Defined benefit plans:
Defined benefit plan adjustment, before tax	1	(2)	3	(1)
Defined benefit plan adjustment, tax portion	0	0	0	0
Defined benefit plan adjustment, net of tax	1	(2)	3	(1)
Other comprehensive (loss)	(37)	(30)	(60)	(29)
Comprehensive income (loss)	$ 41	$ 64	$ (225)	$ 220