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Restructuring Charges (Number of Positions Eliminated Rollfoward) (Details) - Employees	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Restructuring and Related Cost, Number of Positions Eliminated [Roll Forward]
Planned reductions - January 1	133	51
Additional planned reductions	87	233
Actual reductions	(120)	(206)
Planned reductions - September 30	100	78

X

- Definition

The expected number of positions to be eliminated as a result of restructuring activities.

+ References

No definition available.

+ Details

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X

- Definition

The number of positions eliminated during the period as a result of restructuring activities.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Restructuring and Related Cost, Number of Positions Eliminated [Roll Forward]

+ References

No definition available.

+ Details

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Namespace Prefix:	xyl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Restructuring and Related Cost, Planned Reductions

+ References

No definition available.

+ Details

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Namespace Prefix:	xyl_
Data Type:	xbrli:integerItemType
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