2123100 - Disclosure - Accumulated Other Comprehensive Loss
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2423402 - Disclosure - Accumulated Other Comprehensive Loss (Details)
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2323301 - Disclosure - Accumulated Other Comprehensive Loss (Tables)
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2101100 - Disclosure - Background
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2401402 - Disclosure - Background (Details)
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2109100 - Disclosure - CenturyLink Merger
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2409403 - Disclosure - CenturyLink Merger - Preliminary Estimated Aggregate Consideration (Details)
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2121100 - Disclosure - Commitments, Contingencies and Other Items
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2124100 - Disclosure - Condensed Consolidating Financial Information
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2424403 - Disclosure - Condensed Consolidating Financial Information - Balance Sheets (Details)
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2424404 - Disclosure - Condensed Consolidating Financial Information - Statements of Cash Flows (Details)
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2120100 - Disclosure - Fair Value of Financial Instruments
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2111100 - Disclosure - Goodwill, Customer Relationships and Other Intangible Assets
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2411403 - Disclosure - Goodwill, Customer Relationships and Other Intangible Assets - Additional Information (Details)
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2114100 - Disclosure - Long-Term Debt
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2122100 - Disclosure - Other Financial Information
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2119100 - Disclosure - Products and Services Revenues
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2419402 - Disclosure - Products and Services Revenues - Additional Information (Details)
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2419403 - Disclosure - Products and Services Revenues - Operating Revenues for Products and Services (Details)
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2112100 - Disclosure - Revenue Recognition
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2412402 - Disclosure - Revenue Recognition - Additional Information (Details)
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2412407 - Disclosure - Revenue Recognition - Capitalized Contract Cost (Details)
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2412405 - Disclosure - Revenue Recognition - Contract Liabilities (Details)
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2412406 - Disclosure - Revenue Recognition - Deferred Revenue (Details)
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2412404 - Disclosure - Revenue Recognition - Disaggregation of Revenue (Details)
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2412403 - Disclosure - Revenue Recognition - Effects of ASC 606 (Details)
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2118100 - Disclosure - Severance and Restructuring Costs
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