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Equity Method Investment-Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Equity method investments        
Impairment of equity method investment in PLNL   $ 43 $ 0 $ 43
Point Lisas Nitrogen Limited (PLNL)        
Equity method investments        
Ownership interest (as a percent) 50.00%   50.00%  
Point Lisas Nitrogen Limited (PLNL)        
Equity method investments        
Equity Method Investment $ 28   $ 28  
Obligation to purchase ammonia (as a percent)     50.00%  
Purchases of ammonia from PLNL $ 22 $ 20 $ 68 $ 115