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Revenue - Deferred Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Less:      
Less: Current portion of deferred revenue $ (7) $ (7) $ (48)
Nitrogen Fertilizer Segment      
Change in Contract with Customer, Liability [Roll Forward]      
Balance at beginning of period   48  
Add:      
New prepay contracts entered into during the period   10  
Noncash consideration received as part of the 45Q Transaction   46  
Less:      
Revenue recognized that was included in the contract liability balance at the beginning of the period   (46)  
Revenue recognized related to contracts entered into during the period   (10)  
Revenue recognized related to noncash consideration   (3)  
Other changes (1)    
Balance at end of period 44 44  
Less: Current portion of deferred revenue (7) (7)  
Total long-term deferred revenue $ 37 $ 37