Annual report pursuant to Section 13 and 15(d)

Debt - TripCo Debt (Details)

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Debt - TripCo Debt (Details) - USD ($)
shares in Millions, $ in Millions
1 Months Ended 12 Months Ended
Mar. 09, 2020
Dec. 20, 2019
Nov. 19, 2019
Nov. 13, 2019
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2021
Jun. 10, 2019
Debt Financing                  
Repayments of long term debt           $ 1,052 $ 359    
Term Loan 2019                  
Debt Financing                  
Carrying amount of debt                 $ 225
Borrowed amount   $ 33 $ 75            
Delayed Draw Term Loan                  
Debt Financing                  
Borrowed amount       $ 15          
Maximum borrowing capacity     $ 15           $ 25
variable prepaid forward                  
Debt Financing                  
Carrying amount of debt           $ 41   $ 41  
variable prepaid forward | Forward Contracts                  
Debt Financing                  
Variable prepaid forward prepayment received $ 34       $ 34        
Derivative contract term         3 years        
Accreted loan total at maturity         $ 42        
Common stock pledged as collateral               2.4  
Value of common stock pledged as collateral.               $ 65  
Margin loan                  
Debt Financing                  
Repayments of debt         $ 363