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Business Segments - Schedule of Operating Results and Capital Expenditures by Segment (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Segment Reporting Information [Line Items]      
Total net sales $ 1,863 $ 2,286  
Operating income (loss) 123 330  
Interest income (expense) (20) (18)  
Other income, net 4 3  
Income before income tax expense 107 315  
Depreciation and amortization 76 68  
Capital expenditures 51 59  
Total assets 4,093   $ 4,707
Petroleum Segment      
Segment Reporting Information [Line Items]      
Total net sales 1,718 1,987  
Nitrogen Fertilizer Segment      
Segment Reporting Information [Line Items]      
Total net sales 128 226  
Operating Segments | Petroleum Segment      
Segment Reporting Information [Line Items]      
Total net sales 1,722 1,993  
Operating income (loss) 118 237  
Depreciation and amortization 48 46  
Capital expenditures 36 42  
Total assets 2,986   2,978
Operating Segments | Nitrogen Fertilizer Segment      
Segment Reporting Information [Line Items]      
Total net sales 128 226  
Operating income (loss) 20 109  
Depreciation and amortization 19 15  
Capital expenditures 5 4  
Total assets 972   975
Other / Elimination      
Segment Reporting Information [Line Items]      
Total net sales 13 67  
Capital expenditures 10 13  
Total assets 135   $ 754
Inter-segment fees and sales      
Segment Reporting Information [Line Items]      
Total net sales (4) (6)  
Inter-segment fees and sales | Petroleum Segment      
Segment Reporting Information [Line Items]      
Total net sales (4) (6)  
Inter-segment fees and sales | Nitrogen Fertilizer Segment      
Segment Reporting Information [Line Items]      
Total net sales 0 0  
Other / Eliminations      
Segment Reporting Information [Line Items]      
Total net sales 17 73  
Operating income (loss) (15) (16)  
Depreciation and amortization $ 9 $ 7