Annual report pursuant to Section 13 and 15(d)

Debt (Details)

v3.19.3.a.u2
Debt (Details) - Amended 2017 Margin Loan Agreement
shares in Millions, $ in Millions
12 Months Ended
Aug. 19, 2019
USD ($)
Mar. 21, 2016
loan
Oct. 30, 2014
loan
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2018
USD ($)
Charter          
Debt disclosures          
Number of common shares pledged as collateral | shares       6.8  
Value of pledged collateral       $ 3,300  
SPV          
Debt disclosures          
Number of debt agreements | loan   2 2    
Maximum borrowing capacity $ 1,000        
Additional allowed borrowing capacity $ 1,000        
Long-term Debt, Gross       575 $ 525
Remaining borrowing capacity       $ 425  
Percentage of fixed portion of interest rate 0.50%        
Debt Instrument, Interest Rate, Effective Percentage       3.40%  
SPV | Three-month LIBOR          
Debt disclosures          
Interest rate basis three-month LIBOR        
Basis spread on variable rate 1.50%        
SPV | Federal Funds Rate          
Debt disclosures          
Interest rate basis federal funds rate        
Basis spread on variable rate 0.50%        
SPV | LIBOR          
Debt disclosures          
Interest rate basis LIBOR        
Basis spread on variable rate 1.00%     1.50%