2.2.0.25 true Sheet 00 - Document - Document and Entity Information Document and Entity Information http://dresser-rand.com/role/DocumentAndCompanyInformation false R1.xml false Sheet 0110 - Statement - Consolidated Statement of Income Consolidated Statement of Income http://dresser-rand.com/StatementOfIncome false R2.xml false Sheet 0120 - Statement - Consolidated Balance Sheet Consolidated Balance Sheet http://dresser-rand.com/role/BalanceSheet false R3.xml false Sheet 0121 - Statement - Consolidated Balance Sheet (Parenthetical) Consolidated Balance Sheet (Parenthetical) http://dresser-rand.com/role/BalanceSheetParenthetical false R4.xml false Sheet 0130 - Statement - Consolidated Statement of Cash Flow Consolidated Statement of Cash Flow http://dresser-rand.com/role/StatementOfCashFlows false R5.xml false Sheet 0140 - Statement - Consolidated Statement of Changes in Stockholders' Equity Consolidated Statement of Changes in Stockholders' Equity http://dresser-rand.com/role/StatementOfShareholdersEquity false R6.xml false Sheet 0141 - Statement - Consolidated Statement of Changes in Stockholders' Equity (Parenthetical) Consolidated Statement of Changes in Stockholders' Equity (Parenthetical) http://dresser-rand.com/role/StatementOfShareholdersEquityParenthetical false R7.xml false Sheet 0201 - Disclosure - Business Activities and Certain Related Party Transactions Business Activities and Certain Related Party Transactions http://dresser-rand.com/role/BusinessActivitiesAndCertainRelatedPartyTransactions false R8.xml false Sheet 0202 - Disclosure - Summary of Significant Accounting Policies Summary of Significant Accounting Policies http://dresser-rand.com/role/SummaryOfSignificantAccountingPolicies false R9.xml false Sheet 0203 - Disclosure - Acquisitions and other investments Acquisitions and other investments http://dresser-rand.com/role/AcquisitionsAndOtherInvestments false R10.xml false Sheet 0204 - Disclosure - Earnings per Share Earnings per Share http://dresser-rand.com/role/EarningsPerShare false R11.xml false Sheet 0205 - Disclosure - Inventories Inventories http://dresser-rand.com/role/Inventories false R12.xml false Sheet 0206 - Disclosure - Property, plant and equipment Property, plant and equipment http://dresser-rand.com/role/PropertyPlantAndEquipment false R13.xml false Sheet 0207 - Disclosure - Intangible assets and goodwill Intangible assets and goodwill http://dresser-rand.com/role/IntangibleAssetsAndGoodwill false R14.xml false Sheet 0208 - Disclosure - Accounts Payable and Accruals Accounts Payable and Accruals http://dresser-rand.com/role/AccountsPayableAndAccruals false R15.xml false Sheet 0209 - Disclosure - Income taxes Income taxes http://dresser-rand.com/role/IncomeTaxes false R16.xml false Sheet 0210 - Disclosure - Long-Term Debt Long-Term Debt http://dresser-rand.com/role/LongTermDebt false R17.xml false Sheet 0211 - Disclosure - Pension plans Pension plans http://dresser-rand.com/role/PensionPlans false R18.xml false Sheet 0212 - Disclosure - Post-retirement Benefits other than Pensions Post-retirement Benefits other than Pensions http://dresser-rand.com/role/PostretirementBenefitsOtherThanPensions false R19.xml false Sheet 0213 - Disclosure - Share Repurchase Share Repurchase http://dresser-rand.com/role/ShareRepurchase false R20.xml false Sheet 0214 - Disclosure - Financial Instruments Financial Instruments http://dresser-rand.com/role/FinancialInstruments false R21.xml false Sheet 0215 - Disclosure - Commitments and contingencies (Pound in millions) Commitments and contingencies (Pound in millions) http://dresser-rand.com/role/CommitmentsAndContingencies false R22.xml false Sheet 0216 - Disclosure - Warranties Warranties http://dresser-rand.com/role/WarrantyAccruals false R23.xml false Sheet 0217 - Disclosure - Incentive Stock-Based Compensation Plans Incentive Stock-Based Compensation Plans http://dresser-rand.com/role/IncentiveStockBasedCompensationPlans false R24.xml false Sheet 0218 - Disclosure - Significant Clients and Concentration of Credit Risk Significant Clients and Concentration of Credit Risk http://dresser-rand.com/role/SignificantClientsAndConcentrationOfCreditRisk false R25.xml false Sheet 0219 - Disclosure - Other Expense Net Other Expense Net http://dresser-rand.com/role/OtherExpenseIncome false R26.xml false Sheet 0220 - Disclosure - Segment information Segment information http://dresser-rand.com/role/SegmentInformation false R27.xml false Sheet 0221 - Disclosure - Selected Unaudited Quarterly Financial Data Selected Unaudited Quarterly Financial Data http://dresser-rand.com/role/SelectedUnauditedQuarterlyFinancialData false R28.xml false Sheet 0222 - Disclosure - Supplemental Cash Flow Information Supplemental Cash Flow Information http://dresser-rand.com/role/SupplementalCashFlowInformation false R29.xml false Sheet 0223 - Disclosure - Supplemental guarantor financial information Supplemental guarantor financial information http://dresser-rand.com/role/SupplementalGuarantorFinancialInformation false R30.xml false Sheet 0301 - Schedule - Valuation and Qualifying Accounts and Reserves Valuation and Qualifying Accounts and Reserves http://dresser-rand.com/role/ValuationAndQualifyingAccountsAndReserves false R31.xml false Book All Reports All Reports false 1 38 5 0 3 131 false false BalanceAsOf_31Dec2007_Common_Stock_Member 1 BalanceAsOf_31Dec2007_Retained_Earnings_Member 1 BalanceAsOf_31Dec2008_Additional_Paid_In_Capital_Member 1 TwelveMonthsEnded_31Dec2010_Additional_Paid_In_Capital_Member 2 BalanceAsOf_30Jun2010 1 TwelveMonthsEnded_31Dec2008_Accumulated_Other_Comprehensive_Income_Member 6 TwelveMonthsEnded_31Dec2008 50 BalanceAsOf_31Dec2009_Accumulated_Other_Comprehensive_Income_Member 1 BalanceAsOf_31Dec2008_Common_Stock_Member 1 BalanceAsOf_31Dec2010_Retained_Earnings_Member 1 BalanceAsOf_31Dec2010_Additional_Paid_In_Capital_Member 1 TwelveMonthsEnded_31Dec2008_Common_Stock_Member 1 TwelveMonthsEnded_31Dec2010_Retained_Earnings_Member 1 BalanceAsOf_31Dec2010_Accumulated_Other_Comprehensive_Income_Member 1 TwelveMonthsEnded_31Dec2008_Retained_Earnings_Member 2 TwelveMonthsEnded_31Dec2008_Comprehensive_Income_Member 8 TwelveMonthsEnded_31Dec2009_Accumulated_Other_Comprehensive_Income_Member 5 BalanceAsOf_31Dec2010_Common_Stock_Member 1 TwelveMonthsEnded_31Dec2009_Comprehensive_Income_Member 7 Jan-01-2010_Dec-31-2010 86 BalanceAsOf_18Feb2011 1 TwelveMonthsEnded_31Dec2010_Accumulated_Other_Comprehensive_Income_Member 5 BalanceAsOf_31Dec2008 2 TwelveMonthsEnded_31Dec2009 48 BalanceAsOf_31Dec2008_Retained_Earnings_Member 1 TwelveMonthsEnded_31Dec2010_Comprehensive_Income_Member 7 BalanceAsOf_31Dec2009_Additional_Paid_In_Capital_Member 1 BalanceAsOf_31Dec2009_Retained_Earnings_Member 1 TwelveMonthsEnded_31Dec2009_Retained_Earnings_Member 1 BalanceAsOf_31Dec2008_Accumulated_Other_Comprehensive_Income_Member 1 TwelveMonthsEnded_31Dec2008_Additional_Paid_In_Capital_Member 2 BalanceAsOf_31Dec2009_Common_Stock_Member 1 BalanceAsOf_31Dec2007_Additional_Paid_In_Capital_Member 1 BalanceAsOf_31Dec2007 2 BalanceAsOf_31Dec2009 32 BalanceAsOf_31Dec2007_Accumulated_Other_Comprehensive_Income_Member 1 TwelveMonthsEnded_31Dec2009_Additional_Paid_In_Capital_Member 1 BalanceAsOf_31Dec2010 32 true true