Quarterly report pursuant to Section 13 or 15(d)

Assets and Liabilities Measured at Fair Value (Details)

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Assets and Liabilities Measured at Fair Value (Details)
shares in Millions, $ in Millions
Jun. 30, 2024
USD ($)
Dec. 31, 2023
USD ($)
Aug. 10, 2022
$ / item
shares
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Long-term debt fair value $ 0 $ 287  
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     23.64
Forward cap price | $ / item     29.24
Level 2 | Forward Contracts | Variable prepaid forward      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other Assets, Noncurrent Other Assets, Noncurrent  
Recurring      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash equivalents $ 332 $ 404  
Preferred Stock Derivative 4 21  
Recurring | Exchangeable Senior Debentures due 2051      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Long-term debt fair value 307 287  
Recurring | Variable prepaid forward      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative asset 13 6  
Recurring | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash equivalents 332 404  
Recurring | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Preferred Stock Derivative 4 21  
Recurring | Level 2 | Exchangeable Senior Debentures due 2051      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Long-term debt fair value 307 287  
Recurring | Level 2 | Variable prepaid forward      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative asset $ 13 $ 6