2.2.0.7 true Sheet 00090 - Document - Document and Entity Information Document and Entity Information http://www.ncr.com/role/DocumentDocumentAndEntityInformation false R1.xml false Sheet 00100 - Statement - Condensed Consolidated Statements of Operations Condensed Consolidated Statements of Operations http://www.ncr.com/role/StatementCondensedConsolidatedStatementsOfOperations1 false R2.xml false Sheet 00200 - Statement - Condensed Consolidated Balance Sheets Condensed Consolidated Balance Sheets http://www.ncr.com/role/StatementCondensedConsolidatedBalanceSheets false R3.xml false Sheet 00210 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) Condensed Consolidated Balance Sheets (Parenthetical) http://www.ncr.com/role/StatementCondensedConsolidatedBalanceSheetsParenthetical false R4.xml false Sheet 00300 - Statement - Condensed Consolidated Statements of Cash Flows Condensed Consolidated Statements of Cash Flows http://www.ncr.com/role/StatementCondensedConsolidatedStatementsOfCashFlows false R5.xml false Sheet 10101 - Disclosure - BASIS OF PRESENTATION BASIS OF PRESENTATION http://www.ncr.com/role/DisclosureBasisOfPresentaion false R6.xml false Sheet 10201 - Disclosure - SUPPLEMENTAL FINANCIAL INFORMATION SUPPLEMENTAL FINANCIAL INFORMATION http://www.ncr.com/role/DisclosureSupplementalFinancialInformation false R7.xml false Sheet 10301 - Disclosure - NEW ACCOUNTING PRONOUNCEMENTS NEW ACCOUNTING PRONOUNCEMENTS http://www.ncr.com/role/DisclosureNewAccountingPronouncements false R8.xml false Sheet 10401 - Disclosure - REALIGNMENT ACTIVITIES AND REAL ESTATE TRANSACTIONS REALIGNMENT ACTIVITIES AND REAL ESTATE TRANSACTIONS http://www.ncr.com/role/DisclosureRealignmentActivitiesAndRealEstateTransactions false R9.xml false Sheet 10501 - Disclosure - STOCK COMPENSATION PLANS STOCK COMPENSATION PLANS http://www.ncr.com/role/DisclosureStockCompensationPlans false R10.xml false Sheet 10601 - Disclosure - EMPLOYEE BENEFIT PLANS EMPLOYEE BENEFIT PLANS http://www.ncr.com/role/DisclosureEmployeeBenefitPlans false R11.xml false Sheet 10701 - Disclosure - COMMITMENTS AND CONTINGENCIES COMMITMENTS AND CONTINGENCIES http://www.ncr.com/role/DisclosureCommitmentsAndContingencies false R12.xml false Sheet 10801 - Disclosure - INCOME TAXES INCOME TAXES http://www.ncr.com/role/DisclosureIncomeTaxes false R13.xml false Sheet 10901 - Disclosure - EARNINGS PER SHARE EARNINGS PER SHARE http://www.ncr.com/role/DisclosureEarningsPerShares false R14.xml false Sheet 11001 - Disclosure - SEGMENT INFORMATION AND CONCENTRATIONS SEGMENT INFORMATION AND CONCENTRATIONS http://www.ncr.com/role/DisclosureSegment false R15.xml false Sheet 11101 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES FAIR VALUE OF ASSETS AND LIABILITIES http://www.ncr.com/role/DisclosureFairValueOfAssetsAndLiabilities false R16.xml false Sheet 11201 - Disclosure - DEBT OBLIGATIONS DEBT OBLIGATIONS http://www.ncr.com/role/DisclosureDebtObligations false R17.xml false Sheet 11301 - Disclosure - DERIVATIVES AND HEDGING INSTRUMENTS DERIVATIVES AND HEDGING INSTRUMENTS http://www.ncr.com/role/DisclosureDerivativesAndHedgingInstruments false R18.xml false Book All Reports All Reports false 1 10 0 0 3 119 false false As_Of_6_30_2009 1 As_Of_6_30_2010 40 Duration_4_1_2009_To_6_30_2009 25 As_Of_7_16_2010 1 Duration_1_1_2010_To_6_30_2010 70 Duration_1_1_2009_To_12_31_2009 1 Duration_4_1_2010_To_6_30_2010 23 As_Of_12_31_2009 41 Duration_1_1_2009_To_6_30_2009 51 As_Of_12_31_2008 1 true true