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Impairment Testing (Carrying Amounts of Intangible Assets) (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life $ 534 $ 353
Goodwill [Member]    
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life 502 320
Trademarks [Member]    
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life 32 33
Phosphate Solutions [Member] | Goodwill [Member]    
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life 114 116
Industrial Products [Member] | Goodwill [Member]    
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life 91 94
Innovative Ag Solutions [Member] | Goodwill [Member]    
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life [1] 260 73
Potash [Member] | Goodwill [Member]    
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life 19 19
Other [Member] | Goodwill [Member]    
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life $ 18 $ 18
[1] The increase is mainly from the acquisitions of Fertiláqua and ADS businesses. For further information, see Note 8B.