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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 |

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