Quarterly report pursuant to Section 13 or 15(d)

Debt - (Margin Loan) (Details)

v3.19.3
Debt - (Margin Loan) (Details) - USD ($)
3 Months Ended 9 Months Ended
Oct. 05, 2018
Dec. 29, 2017
Dec. 31, 2018
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Debt Instrument [Line Items]            
Distributions to Qurate Retail       $ (2,471,000)   $ 1,122,189,000
Repayments of credit facility         $ 334,275,000 $ 88,543,000
Revolving Credit Facility            
Debt Instrument [Line Items]            
Repayments of credit facility     $ 100,000,000.0      
Broadband Holdco, LLC | Revolving Credit Facility            
Debt Instrument [Line Items]            
Line of credit outstanding balance $ 200,000,000.0          
Broadband Holdco, LLC | Term Loan Facility            
Debt Instrument [Line Items]            
Line of credit outstanding balance $ 800,000,000.0          
Broadband Holdco, LLC | LIBOR            
Debt Instrument [Line Items]            
Variable interest rate 1.85%          
Broadband Holdco, LLC | Series C Common Stock            
Debt Instrument [Line Items]            
Number of shares pledged as collateral         42,681,842  
Value of shares pledged as collateral         $ 4,500,000,000  
Broadband Holdco, LLC | Margin Loan Facility            
Debt Instrument [Line Items]            
Line of credit availability   $ 1,000,000,000        
Term of debt   2 years        
Undrawn commitment fee   0.75%        
Broadband Holdco, LLC | Margin Loan Facility | Revolving Credit Facility            
Debt Instrument [Line Items]            
Line of credit availability $ 200,000,000.0          
Broadband Holdco, LLC | Margin Loan Facility | LIBOR            
Debt Instrument [Line Items]            
Variable interest rate   1.85%        
Qurate Retail            
Debt Instrument [Line Items]            
Distributions to Qurate Retail   $ 1,100,000,000