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Equity Method Investment-Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Equity method investments        
Obligation to purchase ammonia (as a percent)     50.00%  
Operating equity method investments | Maximum | Property, plant and equipment        
Equity method investments        
Number of years that the increased basis for property, plant and equipment and identifiable intangibles will be amortized     10 years  
Point Lisas Nitrogen Limited (PLNL) | Operating equity method investments        
Equity method investments        
Ownership interest (as a percent) 50.00%   50.00%  
Equity Method Investment $ 72   $ 72  
Carrying value of investments in excess of the entity's share of the affiliates' book value 32   32  
Purchases of ammonia from PLNL $ 36 $ 77 $ 95 $ 151