Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Consolidated Statement of Comprehensive Income [Abstract]
Net income	$ 60	$ 39	$ 168	$ 156
Other comprehensive Income (loss):
Foreign currency translation adjustments, net of tax	1	(188)	(31)	(342)
Other comprehensive income (loss)	1	(188)	(31)	(342)
Comprehensive income (loss)	$ 61	$ (149)	$ 137	$ (186)