Quarterly report pursuant to Section 13 or 15(d)

Investments in Charter Accounted for Using the Equity Method (Details)

v3.20.2
Investments in Charter Accounted for Using the Equity Method (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Investments in affiliates accounted for using the Equity Method    
Carrying value of equity method investment $ 12,450,425 $ 12,194,674
Charter    
Investments in affiliates accounted for using the Equity Method    
Carrying value of equity method investment 12,450,000  
Market value of equity method investment $ 33,781,000  
Ownership percentage 27.10%  
Diluted voting interest 24.00%  
Non-diluted voting interest 25.01%  
Equity ownership cap 26.00%  
Voting interest cap 25.01%  
Maximum voting percentage above the highest person or group voting percentage 0.01%  
Voting interest cap base when A/N's equity interest is reduced 23.50%  
Voting interest increase to A/N equity interest decrease ratio 100.00%  
Voting interest when A/N's equity interest is reduced 35.00%  
Maximum A/N equity interest threshold for increased voting interest 15.00%  
A/N | Charter    
Investments in affiliates accounted for using the Equity Method    
Proxy agreement term 5 years  
Trading days before proposed sale of A/N 2 days  
first | A/N | Charter    
Investments in affiliates accounted for using the Equity Method    
Maximum percentage of New Charter shares that may be voted by proxy 7.00%  
last | A/N | Charter    
Investments in affiliates accounted for using the Equity Method    
Maximum percentage of New Charter shares that may be voted by proxy 7.00%