Related Party Transactions - Schedule of Dividends to CVR Energy Stockholders (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Related Party Transaction [Line Items]
Dividends paid	$ 10	$ 0	$ 20	$ 0
Dividends paid per share (in dollars per share)	$ 0.10	$ 0	$ 0.20	$ 0
Public stockholders
Related Party Transaction [Line Items]
Dividends paid	$ 3	$ 0	$ 6	$ 0
IEP
Related Party Transaction [Line Items]
Dividends paid	$ 7	$ 0	$ 14	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details