Capital Lease Obligation At Issuance

No definition available.

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- Definition

Debt Instrument, Amont Due at Maturity Date

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Debt Instrument Covenant Consolidated Leverage Ratio

+ References

No definition available.

+ Details

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Namespace Prefix:	ncr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument Covenant Interest Coverage Ratio

+ References

No definition available.

+ Details

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Namespace Prefix:	ncr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Margin for Base Rate Loans

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Georgia Development Authority IRB Rate

+ References

No definition available.

+ Details

Name:	ncr_GeorgiaDevelopmentAuthorityIrbRate
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Interest coverage ratio determination period

+ References

No definition available.

+ Details

Name:	ncr_InterestCoverageRatioDeterminationPeriod
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of Credit Facility, Amount Outstanding, Long Term

+ References

No definition available.

+ Details

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Namespace Prefix:	ncr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of Credit Facility, Amount Outstanding, Short Term

+ References

No definition available.

+ Details

Name:	ncr_LineOfCreditFacilityAmountOutstandingShortTerm
Namespace Prefix:	ncr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of Credit Facility, Reduction in Borrowing Capacity From Usage of Letters of Credit

+ References

No definition available.

+ Details

Name:	ncr_LineOfCreditFacilityReductionInBorrowingCapacityFromUsageOfLettersOfCredit
Namespace Prefix:	ncr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Maximum Incremental Borrowing Per Secured Credit Facility

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Secured Credit Facility Maximum Borrowing Amount

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity 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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13476-108611

+ Details

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Period Type:	instant

- Definition

Interest rate stated in the contractual debt agreement.

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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 210.5-02.22)

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-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

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Period Type:	duration

- Definition

Net amount of long-term deferred finance costs capitalized at the end of the reporting period.

+ References

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 210.5-02.17)

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

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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 17

-Article 5

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-Topic 835

-SubTopic 30

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399

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Balance Type:	debit
Period Type:	instant

- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Period Type:	instant

- Definition

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

+ References

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-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

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-Topic 942

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-Section S99

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-Subparagraph (SX 210.9-03.16)

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-Name Regulation S-X (SX)

-Number 210

-Article 7

-Section 03

-Paragraph 16

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-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

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-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

+ References

+ Details

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

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 210.5-02.19(a))

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-Number 210

-Section 03

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 7

-Section 03

-Paragraph 16

-Subparagraph a(1)

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Debt Obligations (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Aug. 31, 2011	Sep. 30, 2009
Debt Instrument [Line Items]
Long-term Debt	$ 740
Short-term borrowings	39	1
Long-term debt	701	852
Secured Credit Facility Maximum Borrowing Amount				1,400
Maximum Incremental Borrowing Per Secured Credit Facility	500
Deferred Finance Costs, Noncurrent, Net			29
Interest Coverage Ratio Determination Period	four consecutive fiscal quarters
Capital Lease Obligation At Issuance					5
Debt Instrument, Fair Value Disclosure	741	855
Fiscal Quarter Ending Before December 31 2013 [Member]
Debt Instrument [Line Items]
Debt Instrument Covenant Consolidated Leverage Ratio	350.00%
Fiscal Quarter Ending on or After December 31, 2013, and Prior to December 31, 2014 [Member]
Debt Instrument [Line Items]
Debt Instrument Covenant Consolidated Leverage Ratio	325.00%
Each Fiscal Quarter Ending December 31, 2014 and Beyond [Member]
Debt Instrument [Line Items]
Debt Instrument Covenant Consolidated Leverage Ratio	300.00%
Fiscal Quarters Ending Prior to December 31, 2013 [Member]
Debt Instrument [Line Items]
Debt Instrument Covenant Interest Coverage Ratio	350.00%
Fiscal Quarters Ending On Or After December 31, 2013 [Member]
Debt Instrument [Line Items]
Debt Instrument Covenant Interest Coverage Ratio	400.00%
Secured Debt [Member]
Debt Instrument [Line Items]
Long-term Debt	725
Notes Payable to Banks [Member]
Debt Instrument [Line Items]
Long-term Debt	5
Long-term debt	5
Debt Instrument, Interest Rate, Stated Percentage	9.49%
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Long-term Debt	5
Georgia Development Authority IRB Rate					5.00%
Industrial Revenue Bond [Member] \| Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Long-term Debt	3
Line of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Reduction in Borrowing Capacity From Usage of Letters of Credit	19
Secured Debt [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Secured Credit Facility Maximum Borrowing Amount				700
Line of Credit Facility, Amount Outstanding	700
Line of Credit Facility, Amount Outstanding, Short Term	35
Line of Credit Facility, Amount Outstanding, Long Term	665
Debt Instrument, Periodic Payment	17.5
Debt Instrument, Amont Due at Maturity Date	455
Secured Debt [Member] \| Revolving [Member]
Debt Instrument [Line Items]
Secured Credit Facility Maximum Borrowing Amount				700
Line of Credit Facility, Amount Outstanding	$ 25
Base Rate [Member] \| Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Base Rate [Member] \| Minimum [Member] \| Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Margin for Base Rate Loans	0.25%
Base Rate [Member] \| Maximum [Member] \| Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Margin for Base Rate Loans	1.50%
Federal Funds Rate [Member] \| Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
LIBOR [Member] \| Minimum [Member] \| Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Margin for Base Rate Loans	1.25%
LIBOR [Member] \| Maximum [Member] \| Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Margin for Base Rate Loans	2.50%