Goodwill and Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Changes in the carrying value of goodwill by operating segment
Balance as of December 31, 2012	$ 1,718
Foreign currency and other	1
Balance as of March 31, 2013	1,719
Water Infrastructure
Changes in the carrying value of goodwill by operating segment
Balance as of December 31, 2012	1,149
Foreign currency and other	2
Balance as of March 31, 2013	1,151
Applied Water
Changes in the carrying value of goodwill by operating segment
Balance as of December 31, 2012	569
Foreign currency and other	(1)
Balance as of March 31, 2013	$ 568