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[Line Items] Award Timing Method Award Timing Method [Text Block] Furniture and fixtures Furniture and Fixtures [Member] Award Type [Axis] Award Type [Axis] Non-current portion of deferred revenue Contract with Customer, Liability, Noncurrent Accumulated Foreign Currency Translation Adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Hedging Relationship [Domain] Hedging Relationship [Domain] Total debt Long-Term Debt Legal Entity [Axis] Legal Entity [Axis] Total assets Assets Trading Symbol Trading Symbol Exercise of stock options and release of stock awards, net of shares withheld (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Entity Address, City or Town Entity Address, City or Town Rackspace Finance LLC Rackspace Finance LLC [Member] Rackspace Finance LLC Cash Flows From Operating Activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Expense Securitization Or Asset-Backed Financing Arrangement, Financial Asset For Which Transfer Is Accounted As Sale, Expense Securitization Or Asset-Backed Financing Arrangement, Financial Asset For Which Transfer Is Accounted As Sale, Expense Company Overview, Basis of Presentation, and Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Other segment items Segment Reporting, Other Segment Item, Amount Effect of exchange rate changes on cash, cash equivalents, and restricted cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Non-cash purchases of property, 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Component Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Statement of Comprehensive Income [Abstract] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Revenue recognized included in deferred revenue Contract with Customer, Liability, Revenue Recognized MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Acquisition of property, equipment and software by finance leases Capital Expenditures Acquired By Finance Leases Capital Expenditures Acquired By Finance Leases Effects of Counterparty Netting Derivative Liability, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset Amortization of capitalized implementation costs Implementation Costs [Member] Implementation Costs Share-based compensation expense 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