Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$ 377	$ 419	$ 353
Other comprehensive income:
Foreign currency translation adjustments	2	9	(6)
Defined benefit plans:
Defined benefit plan adjustment, before tax	2	7	12
Defined benefit plan adjustment, tax portion	0	(3)	(2)
Defined benefit plan adjustment, net of tax	2	4	10
Other comprehensive income	4	13	4
Comprehensive income	$ 381	$ 432	$ 357