Consolidated Statement of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net income	$ 312	$ 364
Other comprehensive income/(loss), net of tax (Note 10)
Foreign currency translation	(82)	(187)
Total other comprehensive income/(loss), net of tax	(82)	(187)
Comprehensive income	$ 230	$ 177