Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies Commitments and Contingencies (Details)

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Commitments and Contingencies Commitments and Contingencies (Details)
Apr. 26, 2017
USD ($)
Apr. 04, 2017
Years
$ / shares
Jun. 30, 2017
Apr. 12, 2017
USD ($)
Business Acquisition, Equity Interests Issued or Issuable [Line Items]        
Consideration per share | $ / shares   $ 32.50    
Liberty Ventures reference price | $ / shares   $ 43.65    
Years to redemption date | Years   21    
Senior Notes Due 2021 [Member]        
Business Acquisition, Equity Interests Issued or Issuable [Line Items]        
Aggregate principal amount of consent received | $       $ 312,418,000
Percent of total consent received       96.13%
Aggregate consent fee | $ $ 812,500      
Senior Notes Due 2025 [Member]        
Business Acquisition, Equity Interests Issued or Issuable [Line Items]        
Aggregate principal amount of consent received | $       $ 443,538,000
Percent of total consent received       98.56%
Aggregate consent fee | $ $ 1,125,000      
Senior Notes [Member] | Senior Notes Due 2021 [Member]        
Business Acquisition, Equity Interests Issued or Issuable [Line Items]        
Debt stated percentage 6.75%   6.75% 6.75%
Senior Notes [Member] | Senior Notes Due 2025 [Member]        
Business Acquisition, Equity Interests Issued or Issuable [Line Items]        
Debt stated percentage 6.875%   6.875% 6.875%
Minimum [Member]        
Business Acquisition, Equity Interests Issued or Issuable [Line Items]        
Series A preferred shares dividend rate   5.00%    
Maximum [Member]        
Business Acquisition, Equity Interests Issued or Issuable [Line Items]        
Series A preferred shares dividend rate   7.00%    
GCI Class A Common Stock [Member]        
Business Acquisition, Equity Interests Issued or Issuable [Line Items]        
Ratio of new stock received   0.63    
Consideration per share | $ / shares   $ 27.50    
GCI Series A Preferred Stock [Member]        
Business Acquisition, Equity Interests Issued or Issuable [Line Items]        
Ratio of new stock received   0.20    
Consideration per share | $ / shares   $ 5.00