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Goodwill and Other Intangible Assets (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Goodwill [Roll Forward]          
Balance at the beginning of the year     $ 2,374    
Effect of exchange rate changes     2    
Balance at the end of the year $ 2,091   2,091 $ 2,374  
Goodwill, Impairment Loss (26) $ (259) (285) 0 $ 0
Ammonia          
Goodwill [Roll Forward]          
Balance at the beginning of the year     587    
Effect of exchange rate changes     1    
Balance at the end of the year 579   579 587  
Goodwill, Impairment Loss     (9)    
Granular Urea          
Goodwill [Roll Forward]          
Balance at the beginning of the year     828    
Effect of exchange rate changes     0    
Balance at the end of the year 828   828 828  
Goodwill, Impairment Loss     0    
UAN          
Goodwill [Roll Forward]          
Balance at the beginning of the year     576    
Effect of exchange rate changes     0    
Balance at the end of the year 576   576 576  
Goodwill, Impairment Loss     0    
AN          
Goodwill [Roll Forward]          
Balance at the beginning of the year     310    
Effect of exchange rate changes     0    
Balance at the end of the year 69   69 310  
Goodwill, Impairment Loss     (241)    
Other          
Goodwill [Roll Forward]          
Balance at the beginning of the year     73    
Effect of exchange rate changes     1    
Balance at the end of the year $ 39   39 $ 73  
Goodwill, Impairment Loss     $ (35)