Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Consolidated Statement of Comprehensive Income [Abstract]
Net income	$ 197	$ 214	$ 353
Other comprehensive Income (loss):
Foreign currency translation adjustments, net of tax	(107)	(369)	(309)
Other comprehensive loss	(107)	(369)	(309)
Comprehensive income (loss)	$ 90	$ (155)	$ 44