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Revenue - Deferred Revenue (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
Change in Contract with Customer, Liability [Roll Forward]  
Balance at beginning of period $ 48
Less:  
Balance at end of period 16
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 51
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 (47)
Revenue recognized related to contracts entered into during the period (41)
Revenue recognized related to noncash consideration (6)
Other changes (2)
Balance at end of period 49
Less: Current portion of deferred revenue (16)
Total long-term deferred revenue $ 33