Quarterly report pursuant to Section 13 or 15(d)

Debt - TripCo Debt (Details)

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Debt - TripCo Debt (Details) - variable prepaid forward - USD ($)
shares in Millions, $ in Millions
Mar. 09, 2020
Mar. 31, 2022
Dec. 31, 2021
Debt Financing      
Carrying amount of debt   $ 41 $ 41
Forward Contracts      
Debt Financing      
Variable prepaid forward prepayment received $ 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.   $ 66