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Long-Term Debt and Finance Lease Obligations - Additional Information (Details) - USD ($)		3 Months Ended	6 Months Ended
	Jun. 23, 2021	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020
Debt Instrument [Line Items]
Proceeds from issuance of senior secured notes			$ 550,000,000	$ 1,000,000,000
Payment for redemption of debt			552,000,000	500,000,000
Loss on extinguishment of debt			$ 8,000,000	$ 3,000,000
CVR Partners
Debt Instrument [Line Items]
Loss on extinguishment of debt		$ 8,000,000
6.125% Senior Secured Notes, due June 2028 | Prior to June 15, 2024
Debt Instrument [Line Items]
Redemption of notes, percentage of par value at which notes were repurchased			100.00%
6.125% Senior Secured Notes, due June 2028 | Senior Notes | CVR Partners
Debt Instrument [Line Items]
Aggregate principal amount of private offering	$ 550,000,000
Stated interest rate	6.125%	6.125%	6.125%
Proceeds from issuance of senior secured notes	$ 547,000,000
Debt issuance costs	$ 3,000,000
9.25% Senior Secured Notes, due June 2023 | Senior Notes | CVR Partners
Debt Instrument [Line Items]
Stated interest rate	9.25%	9.25%	9.25%
Payment for redemption of debt	$ 550,000,000
Accrued interest settled upon redemption	$ 1,000,000
Unamortized deferred financing costs		$ 3,000,000	$ 3,000,000
Unamortized discount		$ 5,000,000	$ 5,000,000

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