Quarterly report pursuant to Section 13 or 15(d)

Debt (Details)

v3.2.0.727
Debt (Details)
 1 Months Ended 6 Months Ended
Jun. 30, 2015
USD ($)
$ / shares
shares
Apr. 07, 2015
USD ($)
Oct. 31, 2014
USD ($)
Oct. 30, 2014
USD ($)
item
Jul. 31, 2015
USD ($)
Nov. 30, 2014
USD ($)
Jun. 30, 2015
USD ($)
$ / shares
Mar. 27, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 25, 2013
USD ($)
Debt disclosures                    
Debt outstanding $ 412,000,000           $ 412,000,000   $ 372,000,000  
Distribution to parent     $ 300,000,000              
Margin Loan Agreements | Charter                    
Debt disclosures                    
Number of common shares pledged as collateral | shares 7,000,000                  
Value of pledged collateral $ 1,200,000,000           $ 1,200,000,000      
Revolving Credit Facility                    
Debt disclosures                    
Maximum borrowing capacity               $ 234,000,000    
Basis spread on variable rate 0.64%                  
Line of Credit Facility, Maximum Borrowing Capacity               $ 234,000,000    
Proceeds from Issuance of Debt   $ 40,000,000                
Debt Instrument, Unused Borrowing Capacity Fee, Percent 0.12%           0.12%      
Repayments of Debt         $ 40,000,000          
Revolving Credit Facility | Time Warner                    
Debt disclosures                    
Number of common shares pledged as collateral | shares 1,700,000                  
Security Owned and Pledged as Collateral, Fair Value, Per Share | $ / shares $ 178.17           $ 178.17      
Revolving Credit Facility | Three-month LIBOR                    
Debt disclosures                    
Interest rate basis three-month LIBOR                  
BroadbandSPV | Margin Loan Agreements                    
Debt disclosures                    
Debt outstanding $ 372,000,000           $ 372,000,000      
Remaining borrowing capacity 28,000,000           $ 28,000,000      
BroadbandSPV | Margin Loan Agreements | Three-month LIBOR                    
Debt disclosures                    
Interest rate basis             three-month LIBOR      
Basis spread on variable rate             1.55%      
BroadbandSPV | Margin Loan Agreements                    
Debt disclosures                    
Number of debt agreement | item       2            
Maximum borrowing capacity       $ 400,000,000            
Proceeds From Issuance Of Secured Debt     $ 320,000,000     $ 52,000,000        
Line of Credit Facility, Maximum Borrowing Capacity       $ 400,000,000            
TruePosition | Line of credit                    
Debt disclosures                    
Maximum borrowing capacity                   $ 4,000,000
Line of Credit Facility, Maximum Borrowing Capacity                   $ 4,000,000
TruePosition | Standby Letters of Credit                    
Debt disclosures                    
Long-term Line of Credit $ 0           $ 0   $ 634,000  
Interest rate (as a percent)                 1.75%