Acquisition (Pro Forma Revenue and Net Earnings) (Details) - HoldCo - GCI Liberty Inc - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
|
| Business Acquisition [Line Items] | ||
| Revenue | $ 220,805 | $ 229,292 |
| Net earnings (loss) | (178,874) | 393,520 |
| Net earnings (loss) attributable to GCI Liberty shareholders | $ (178,719) | $ 393,637 |
| Basic net earnings (loss) attributable to Class A and Class B GCI Liberty, Inc. shareholders per common share (dollars per share) | $ (1.66) | $ 3.61 |
| Diluted net earnings (loss) attributable to Class A and Class B GCI Liberty, Inc. shareholders per common share (dollars per share) | $ (1.66) | $ 3.61 |
| X | ||||||||||
- Definition Business Acquisition, Pro Forma Net Income (Loss) Attributable To Common Shareholders No definition available.
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|