Annual report pursuant to Section 13 and 15(d)

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

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Investments in Affiliates Accounted for Using the Equity Method (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Investments in affiliates accounted for using the Equity Method    
Carrying value of equity method investment $ 16,179,685 $ 12,194,674
Charter    
Investments in affiliates accounted for using the Equity Method    
Carrying value of equity method investment 16,178,939 $ 12,194,674
Market value of equity method investment $ 39,340,000  
Ownership capped percentage 26.00%  
Ownership percentage 30.70%  
Diluted voting interest 27.20%  
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%  
Percentage of aggregate voting power 25.01%  
Threshold ownership percentage of voting securities held by other group or person 10.00%  
Number of shares subject to A/N proxy agreement included in voting power 0