Quarterly report pursuant to Section 13 or 15(d)

Assets and Liabilities Measured at Fair Value (Details)

v3.20.2
Assets and Liabilities Measured at Fair Value (Details)
$ in Millions
Mar. 09, 2020
USD ($)
$ / item
shares
Jun. 30, 2020
USD ($)
Dec. 31, 2019
USD ($)
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   $ 123 $ 22
Recurring | Variable Prepaid Forward      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative Asset   5  
Recurring | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash equivalents   8 $ 22
Recurring | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash equivalents   115  
Recurring | Level 2 | Variable Prepaid Forward      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative Asset   $ 5