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Impairment Testing (Carrying Amounts of Intangible Assets) (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life $ 539 $ 534
Goodwill [Member]    
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life 507 502
Trademarks [Member]    
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life 32 32
Phosphate Solutions [Member] | Goodwill [Member]    
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life 110 114
Industrial Products [Member] | Goodwill [Member]    
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life 90 91
Growing Solutions [Member] | Goodwill [Member]    
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life 271 260
Potash [Member] | Goodwill [Member]    
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life 20 19
Other [Member] | Goodwill [Member]    
Intangible assets having an indefinite useful life [Line Items]    
Intangible assets having an indefinite useful life $ 16 $ 18