Restructuring (Narrative) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Employee	Sep. 30, 2013
Restructuring Cost and Reserve [Line Items]
Number of employees terminated during the period			165
Restructuring Charges	$ 8	$ 14	$ 16	$ 39
Worldwide Restructuring Initiative [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees terminated during the period			200
Restructuring Charges			16
Restructuring and Related Cost, Expected Cost			$ 5