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Loans (FLFO) Amendment Flag Amendment Flag Fair value of debt Long-Term Debt, Fair Value Entity Registrant Name Entity Registrant Name Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Gross profit Gross Profit Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Foreign currency translation adjustments Foreign currency translation adjustments, net of tax expense (benefit) Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Fair Value as of Grant Date Award Grant Date Fair Value Affiliated entity Affiliated Entity [Member] Debt Debt Disclosure [Text Block] Stockholders' deficit: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Net Amounts Derivative Liability, Subject to Master Netting Arrangement, after Offset and Deduction Capitalized contract cost, amortization Capitalized Contract Cost, Amortization Schedule of Indefinite-Lived Intangible Assets Other Than Goodwill Schedule of Indefinite-Lived Intangible Assets [Table Text Block] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Aggregate principal amount Debt Instrument, Face Amount Entity Address, Postal Zip Code Entity Address, Postal Zip Code Schedule of Share-Based Compensation Expense Recognized Under the Incentive Plan Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Interest rate swaps Interest Rate Swap [Member] Net loss per share: Basic And Diluted [Abstract] Basic And Diluted Restatement 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Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Interest rate swap Interest Rate Swap - Nine [Member] Interest Rate Swap - Nine Preferred stock, $0.01 par value per share: 5.0 shares authorized; no shares issued or outstanding Preferred Stock, Value, Issued Debt Instrument, Interest Rate, Period [Domain] Debt Instrument, Interest Rate, Period [Domain] Debt Instrument, Interest Rate, Period [Domain] Basic (in dollars per share) Net loss per share, basic (in dollars per share) Earnings Per Share, Basic Proceeds from sale of headquarters Proceeds from Sale, Real Estate, Held-for-Investment Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Property, equipment and software, net Property, equipment and software, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Principal payments of finance lease liabilities Finance Lease, Principal Payments Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Schedule of Goodwill [Table] Goodwill [Table] Derivatives designated as hedging instruments Designated as Hedging Instrument [Member] Net loss attributable to common stockholders, basic Net Income (Loss) Available to Common Stockholders, Basic Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Total current liabilities Liabilities, Current Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Weighted average number of shares outstanding: Weighted average shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Previously Reported Previously Reported [Member] Total assets Assets Outstanding borrowings Long-Term Line of Credit Amount reclassified from Accumulated comprehensive income (loss) into earnings, net of tax expense Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Number of awards granted in period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Purchases of property, equipment and software Payments to Acquire Property, Plant, and Equipment Other non-current liabilities Other Liabilities, Noncurrent Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Commitments and Contingencies (Note 8) 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Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Entity File Number Entity File Number Liabilities Liabilities, Fair Value Disclosure [Abstract] Customer Contracts Revenue from Contract with Customer [Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Entity Address, Address Line One Entity Address, Address Line One Principal amount repurchased and surrendered for cancellation Extinguishment of Debt, Amount Entity Address, Address Line Two Entity Address, Address Line Two Corporate functions Corporate Function [Member] Corporate Function Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Effect of exchange rate changes on cash, cash equivalents, and restricted cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations Name Forgone Recovery, Individual Name Document Period End Date Document Period End Date Finance lease liabilities Finance Lease, Liability, Current Other operating activities Other Noncash Income (Expense) Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Base rate Base Rate [Member] Insider Trading Arrangements [Line Items] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Restructuring and transformation expenses Restructuring And Transformation Costs Restructuring And Transformation Costs Other current assets Other Current Assets [Member] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Cost of revenue Cost of Revenue Revenue recognized included in deferred revenue Contract with Customer, Liability, Revenue Recognized Adjustment to Compensation: Adjustment to Compensation [Axis] Rackspace Receivables II, LLC , Special Purpose Vehicle (SPV) Rackspace Receivables II, LLC , Special Purpose Vehicle (SPV) [Member] Rackspace Receivables II, LLC , Special Purpose Vehicle (SPV) Document Transition Report Document Transition Report Schedule of Revenue by Major Customers, by Reporting Segments [Table] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Document Quarterly Report Document Quarterly Report Amount reclassified from accumulated other comprehensive income (loss) to earnings Amount reclassified from Accumulated comprehensive income (loss) into earnings, net of tax expense Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Accumulated other comprehensive income Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Current Reporting Status Entity Current Reporting Status Accumulated Deficit Retained Earnings [Member] Restricted cash included in other non-current assets Restricted Cash and Cash Equivalents Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Debt instrument, percent of total debt Debt Instrument, Percent Of Total Debt Repurchased Debt Instrument, Percent Of Total Debt Repurchased Related Party [Axis] Related and Nonrelated Parties [Axis] Interest Rate Duration Term [Axis] Debt Instrument, Interest Rate, Period [Axis] Debt Instrument, Interest Rate, Period Basic (in shares) Common stock (in shares) Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Percentage of debt due to related party Debt Instrument, Percent Held By Affiliated Entity Debt Instrument, Percent Held By Affiliated Entity Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Executive Category: Executive Category [Axis] Name Awards Close in Time to MNPI Disclosures, Individual Name Work in process Construction in Progress [Member] Pay-fixed interest rate swap Pay-Fixed Interest Rate Swap [Member] Pay-Fixed Interest Rate Swap Entity Filer Category Entity Filer Category Remaining performance obligation Revenue, Remaining Performance Obligation, Amount Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Company Selected Measure Name Company Selected Measure Name