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Revenue - Deferred Revenue (Details)
$ in Millions
9 Months Ended
Sep. 30, 2019
USD ($)
Less:  
Prepaid contracts, payment collected $ 24
CVR Partners  
Change in Contract with Customer, Liability [Roll Forward]  
Balance at beginning of period 69
Add:  
New prepay contracts entered into during the period 24
Less:  
Revenue recognized that was included in the contract liability balance at the beginning of the period 68
Revenue recognized related to contracts entered into during the period 8
Other changes 1
Balance at end of period $ 16