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Business and Basis of Presentation - Narrative (Details) | 9 Months Ended | 3 Months Ended | 12 Months Ended
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Sep. 30, 2014 consultant client | Dec. 31, 2013 Dex Guaranteed Actions Service service | Dec. 31, 2013 Dex Guaranteed Actions Service
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Number of business clients (over 500,000) | 500,000 |  |
Number of sales employees (over 2,000) | 2,000 |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |
Number of service offerings involved in accounting error |  | 1 |
Period for revenue recognition |  |  | 1 month

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