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Revenue - Deferred Revenue (Details)
$ in Millions
 9 Months Ended
Sep. 30, 2022
USD ($)
Change in Contract with Customer, Liability [Roll Forward]  
Balance at beginning of period $ 87
Less:  
Balance at end of period 65
Nitrogen Fertilizer Segment  
Change in Contract with Customer, Liability [Roll Forward]  
Balance at beginning of period 87
Add:  
New prepay contracts entered into during the period 80
Less:  
Revenue recognized that was included in the contract liability balance at the beginning of the period (86)
Revenue recognized related to contracts entered into during the period (16)
Balance at end of period $ 65