Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

v3.21.2
Basis of Presentation (Details)
$ in Millions
3 Months Ended 9 Months Ended
Dec. 31, 2020
USD ($)
Dec. 18, 2020
shares
May 23, 2015
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2020
USD ($)
shares
Aug. 05, 2021
USD ($)
Feb. 23, 2021
USD ($)
Liberty                  
Reimbursable amount       $ 3.5 $ 1.0 $ 10.1 $ 3.2    
Qurate Retail                  
Tax sharing receivable $ 119.0     110.8   110.8      
Qurate Retail | Other current assets                  
Tax sharing receivable $ 24.4     0.0   $ 0.0      
CEO | Liberty                  
CEO compensation allocation percentage 18.00%                
Charter.                  
Fully diluted ownership percentage     26.00%     26.00%      
Series A and C Common Stock                  
Stock Repurchase Program, Authorized Amount                 $ 2,230.0
Stock repurchase program, additional authorized amount               $ 2,105.0  
Number of shares repurchased | shares           17,800,000      
Value of stock repurchased           $ 2,900.0      
Remaining authorized repurchase amount       $ 2,030.0   $ 2,030.0      
Series C                  
Number of shares repurchased | shares             2,000,000.0    
Value of stock repurchased             $ 285.7    
Series A Cumulative Redeemable Preferred Stock                  
Number of shares received | shares   1              
GCI Liberty Inc                  
Business combination shares issued ratio   0.580