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Segment Disclosures (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Segment data    
Net sales $ 2,012 $ 2,868
Cost of sales 1,149 1,170
Gross margin 863 1,698
Total other operating costs and expenses 54 66
Equity in earnings of operating affiliate 17 26
Operating earnings 826 1,658
Ammonia    
Segment data    
Net sales 424 640
Granular Urea    
Segment data    
Net sales 611 765
UAN    
Segment data    
Net sales 667 1,015
AN    
Segment data    
Net sales 159 223
Operating Segments | Ammonia    
Segment data    
Net sales 424 640
Cost of sales 280 280
Gross margin 144 360
Operating Segments | Granular Urea    
Segment data    
Net sales 611 765
Cost of sales 327 270
Gross margin 284 495
Operating Segments | UAN    
Segment data    
Net sales 667 1,015
Cost of sales 346 345
Gross margin 321 670
Operating Segments | AN    
Segment data    
Net sales 159 223
Cost of sales 104 171
Gross margin 55 52
Operating Segments | Other    
Segment data    
Net sales 151 225
Cost of sales 92 104
Gross margin $ 59 $ 121