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Equity Method Investments	12 Months Ended
Equity Method Investments	Dec. 31, 2023
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	Equity Method Investment We have a 50% ownership interest in PLNL, which operates an ammonia production facility in Trinidad. We include our share of the net earnings from this equity method investment as an element of earnings from operations because PLNL provides additional production to our operations and is integrated with our other supply chain and sales activities in the Ammonia segment. PLNL’s ammonia production facility relies on natural gas supplied, under a gas sales contract, by The National Gas Company of Trinidad and Tobago Limited (NGC). The prior gas sales contract had an expiration date of September 2023. In the third quarter of 2023, PLNL entered into a new gas sales contract with NGC (the New NGC Contract), which is effective October 2023 through December 2025. In the third quarter of 2023 and due to the terms of the New NGC Contract, we assessed our investment in PLNL for impairment and determined that the carrying value of our equity method investment in PLNL exceeded its fair value. As a result, we recorded an impairment of our equity method investment in PLNL of $43 million, which is reflected in equity in (loss) earnings of operating affiliate on our consolidated statement of operations for the year ended December 31, 2023. As of December 31, 2023, the total carrying value of our equity method investment in PLNL was $26 million. We have transactions in the normal course of business with PLNL reflecting our obligation to purchase 50% of the ammonia produced by PLNL at current market prices. Our ammonia purchases from PLNL totaled $142 million, $259 million and $150 million in 2023, 2022 and 2021, respectively.