| **Long-Term Debt**             | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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| **Debt Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| Long-Term Debt                 | Long-Term DebtOn April 30, 2013, GCI Holdings, Inc. (“Holdings”), a wholly owned subsidiary of GCI, entered into a Third Amended and Restated Credit and Guarantee Agreement with Credit Agricole Corporate and Investment Bank, as administrative agent ("Amended Senior Credit Facility"). The Amended Senior Credit Facility provides up to $240.0 million in delayed draw term loans and a $150.0 million revolving credit facility. The Amended Senior Credit Facility replaced the Senior Credit Facility described in Note 6(c) of our December 31, 2012 annual report on Form 10-K.  At closing Holdings borrowed $100.0 million of the delayed draw term loan and used the proceeds to pay down all of the outstanding debt under the previous Senior Credit Facility, pay loan fees and for general corporate purposes.  The Amended Senior Credit Facility will mature on April 30, 2018.The interest rate on our Amended Senior Credit Facility is London Interbank Offered Rate (“LIBOR”) plus the following Applicable Margin set forth opposite each applicable Total Leverage Ratio below.Total Leverage Ratio (as defined)Applicable Margin>=5.53.00%>=5.0 but <5.52.75%>=4.5 but <5.02.50%>=4.0 but <4.52.25%<4.02.00%Borrowings under the Amended Senior Credit Facility are subject to certain financial covenants and restrictions on indebtedness.  Our Amended Senior Credit Facility Total Leverage Ratio (as defined) may not exceed 6.5 to one through June 30, 2014 and shall not exceed 5.95 to one any time thereafter; the Senior Leverage Ratio (as defined) may not exceed 3.00 to one; and our Interest Coverage Ratio (as defined) must not be less than 2.50 to one at any time. The terms of the Amended Senior Credit Facility include customary representations and warranties, customary affirmative and negative covenants and customary events of default. At any time after the occurrence of an event of default under the Amended Senior Credit Facility, the lenders may, among other options, declare any amounts outstanding under the Amended Senior Credit Facility immediately due and payable and terminate any commitment to make further loans under the Amended Senior Credit Facility. The obligations under the Amended Senior Credit Facility are secured by a security interest on substantially all of the assets of Holdings and the subsidiary guarantors, as defined in the Amended Senior Credit Facility, and on the stock of Holdings.The amendment to our Senior Credit Facility in April 2013 was a partial substantial modification of our existing Senior Credit Facility resulting in a $0.1 million write-off of previously deferred loan fees on our Consolidated Income Statement for the nine months ended September 30, 2013.  Net deferred loan fees of $0.7 million associated with the portion of our previous Senior Credit Facility that was determined not to have been substantially modified are being amortized over the life of the Amended Senior Credit Facility.In connection with the Amended Senior Credit Facility, we paid loan fees and other expenses of $0.4 million that were expensed immediately on our Consolidated Income Statement for the nine months ended September 30, 2013 and $3.0 million that were deferred and are being amortized over the life of the Amended Senior Credit Facility.In July 2013, we borrowed $100.0 million under the delayed draw term loan resulting in a total of $200.0 million borrowed under the delayed draw term loan as of September 30, 2013.  Additionally, we have borrowed $27.0 million under the revolving portion and have $0.5 million of letters of credit outstanding under the Amended Senior Credit Facility at September 30, 2013, which leaves $162.5 million available for borrowing as of September 30, 2013. |

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| - Definition
The entire disclosure for long-term debt.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682
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