Quarterly report pursuant to Section 13 or 15(d)

Assets and Liabilities Measured at Fair Value (Details)

v3.21.2
Assets and Liabilities Measured at Fair Value (Details)
$ in Millions
Mar. 09, 2020
USD ($)
$ / item
shares
Sep. 30, 2021
USD ($)
Dec. 31, 2020
USD ($)
Forward Contracts | variable prepaid forward      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Forward contract shares indexed | shares 2.4    
Forward floor price | $ / item 17.25    
Forward cap price | $ / item 26.84    
Variable prepaid forward prepayment received $ 34    
Recurring      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash equivalents   $ 38 $ 4
Financial instruments liabilities   137 14
Recurring | TripCo Exchangeable Senior Debentures due 2051      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative asset   276  
Recurring | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash equivalents   38 4
Recurring | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Financial instruments liabilities   137 $ 14
Recurring | Level 2 | TripCo Exchangeable Senior Debentures due 2051      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative asset   $ 276