Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Line-of-Credit Arrangement

-URI http://asc.fasb.org/extlink&oid=6517033

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20

-Article 5

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Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Credit facilities and long term debt.

+ References

No definition available.

+ Details

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Namespace Prefix:	xyl_
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Balance Type:	na
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- Definition

Line of credit basis off spread on variable rate.

+ References

No definition available.

+ Details

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Namespace Prefix:	xyl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of Credit Facility, Increases in Maximum Borrowing Capacity

+ References

No definition available.

+ Details

Name:	xyl_LineofCreditFacilityIncreasesinMaximumBorrowingCapacity
Namespace Prefix:	xyl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of Credit Facility, Increases in Maximum Borrowing Capacity, Total

+ References

No definition available.

+ Details

Name:	xyl_LineofCreditFacilityIncreasesinMaximumBorrowingCapacityTotal
Namespace Prefix:	xyl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum leverage ratio.

+ References

No definition available.

+ Details

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

- Definition

Redemption price percentage.

+ References

No definition available.

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Namespace Prefix:	xyl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

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Balance Type:
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- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
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- Details

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Balance Type:
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- Details

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Credit Facilities and Long-Term Debt (Details Textual) € in Millions		6 Months Ended
	Sep. 20, 2011 USD ($)	Jun. 30, 2015 USD ($)	Mar. 27, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 04, 2013 EUR (€)
Letter of Credit
Credit Facilities and Long-Term Debt [Abstract]
Debt instrument aggregate principal amount			$ 100,000,000
Revolving Credit Facility
Credit Facilities and Long-Term Debt [Abstract]
Debt instrument aggregate principal amount			600,000,000
Permitted increases in Credit Facility borrowing base			200,000,000
Maximum permitted increases in Credit Facility borrowing base			$ 800,000,000
Interest rate per annum, effective rate		1.00%
Maximum leverage ratio		3.50
Risk Sharing Finance Facility Agreement
Credit Facilities and Long-Term Debt [Abstract]
Debt instrument aggregate principal amount		$ 134,000,000			€ 120
Maximum leverage ratio		3.50
Line of Credit Facility, Amount Outstanding		$ 77,000,000
Senior Notes
Credit Facilities and Long-Term Debt [Abstract]
Redemption price percentage	101.00%
Senior Notes Due 2016, 3.550%
Credit Facilities and Long-Term Debt [Abstract]
Fair value of senior notes due		616,000,000		$ 621,000,000
Interest on notes due	3.55%
Long-term Debt, Gross	$ 600,000,000	600,000,000		600,000,000
Senior Notes Due 2021, 4.875%
Credit Facilities and Long-Term Debt [Abstract]
Fair value of senior notes due		646,000,000		653,000,000
Interest on notes due	4.875%
Long-term Debt, Gross	$ 600,000,000	$ 600,000,000		$ 600,000,000