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Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation and Summary of Significant Accounting Policies (Details 3) $ in Millions | 12 Months Ended
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Dec. 31, 2015 USD ($) state | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Revenue Recognition |  |  |
Term of indefeasible rights of use (in years) | 20 years |  |
Advertising Costs |  |  |
Advertising expense | $ 84 | $ 83 | $ 88
Accounts Receivable and Allowance for Doubtful Accounts |  |  |
Period accounts receivable are past due | 30 days |  |
Number of states in which entity operates | state | 14 |  |
Activation and installation charges | Minimum |  |  |
Revenue Recognition |  |  |
Customer relationship period for revenue recognition (from eighteen months to over ten years) | 18 months |  |
Activation and installation charges | Maximum |  |  |
Revenue Recognition |  |  |
Customer relationship period for revenue recognition (from eighteen months to over ten years) | 10 years |  |
Qwest Communications International, Inc. |  |  |
Affiliate Transactions |  |  |
Description of related party transaction | In 2015, we agreed to a plan to settle the outstanding affiliate obligations, net balance with QCII over a 30 year term. Payments will be made on a monthly basis. |  |
Repayments on affiliate obligation | $ 105 |  |

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