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Property, Plant and Equipment (Details Textual) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Property Plant And Equipment (Textual) [Abstract] |  |  |  |
Depreciation expense | $ 22 | $ 23 | $ 69 | $ 70

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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Property, Plant and equipment. + References No definition available. + Details
Name: | xyl_PropertyPlantAndEquipmentTextualAbstract
Namespace Prefix: | xyl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration