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Equity Method Investments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Equity method investments |  |  |
Liability (refund) adjustment from settlement with taxing authority | $ 39 |  |
Impairment of equity method investment in PLNL | 0 | $ 43 | $ 0
Point Lisas Nitrogen Limited (PLNL) |  |  |
Equity method investments |  |  |
Equity Method Investments | $ 29 |  |
Obligation to purchase ammonia (description) | 50% of the ammonia produced by PLNL |  |
Unrecorded Unconditional Purchase Obligation, Purchases | $ 90 | 142 | $ 259
Point Lisas Nitrogen Limited (PLNL) |  |  |
Equity method investments |  |  |
Ownership interest (as a percent) | 50.00% |  |
Impairment of equity method investment in PLNL |  | $ 43 |

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