Fair Value Measurements - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Dec. 31, 2023
Fair value measurements
Cash, cash equivalents, and reserved funds, carrying value	$ 644	$ 1,200
Long-term debt	1,500	2,100
Level 1
Fair value measurements
Cash, cash equivalents, and reserved funds, fair value	644	1,200
Level 2
Fair value measurements
Long-term debt, fair value	1,500	$ 2,100
CVRP JV
Fair value measurements
CVR Partners estimated fair value of consideration	$ 46

Cash, Cash Equivalents, and Reserved Funds, Carrying Value

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- Definition

Cash, Cash Equivalents, and Reserved Funds, Fair Value Disclosure

+ References

No definition available.

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- Definition

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.

+ References

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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

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