Benefit Plans	12 Months Ended
Dec. 31, 2017
Retirement Benefits [Abstract]
Benefit Plans	(14) Benefit Plans CVR sponsors and administers two defined-contribution 401(k) plans, the CVR Energy 401(k) Plan and the CVR Energy 401(k) Plan for Represented Employees (the "Plans"), in which CVR employees may participate. Participants in the Plans may elect to contribute a designated percentage of their eligible compensation in accordance with the Plans, subject to statutory limits. CVR provides a matching contribution of 100% of the first 6% of eligible compensation contributed by participants. Contributions to the represented plan are determined in accordance with provisions of negotiated labor contracts. Participants in both Plans are immediately vested in their individual contributions. Both Plans provide for a three-year vesting schedule for CVR's matching contributions and contain a provision to count service with predecessor organizations. CVR's contributions under the Plans were approximately $8.5 million, $8.1 million and $7.3 million for the years ended December 31, 2017, 2016 and 2015, respectively. Beginning April 1, 2016 as a result of the East Dubuque Merger, the Nitrogen Fertilizer Partnership acquired the Rentech Nitrogen GP, LLC Union 401(k) Plan (the "Union Plan"), which was sponsored by CVR Nitrogen GP, LLC. On May 1, 2017, the Union Plan was merged into the CVR Energy 401(k) Plan for Represented Employees. Contributions under the Union Plan were not material.

Benefit Plans

12 Months Ended

Dec. 31, 2017

(14) Benefit Plans

CVR sponsors and administers two defined-contribution 401(k) plans, the CVR Energy 401(k) Plan and the CVR Energy 401(k) Plan for Represented Employees (the "Plans"), in which CVR employees may participate. Participants in the Plans may elect to contribute a designated percentage of their eligible compensation in accordance with the Plans, subject to statutory limits. CVR provides a matching contribution of 100% of the first 6% of eligible compensation contributed by participants. Contributions to the represented plan are determined in accordance with provisions of negotiated labor contracts. Participants in both Plans are immediately vested in their individual contributions. Both Plans provide for a three-year vesting schedule for CVR's matching contributions and contain a provision to count service with predecessor organizations. CVR's contributions under the Plans were approximately $8.5 million, $8.1 million and $7.3 million for the years ended December 31, 2017, 2016 and 2015, respectively.

Beginning April 1, 2016 as a result of the East Dubuque Merger, the Nitrogen Fertilizer Partnership acquired the

Rentech Nitrogen GP, LLC Union 401(k) Plan (the "Union Plan"), which was sponsored by CVR Nitrogen GP, LLC. On May 1, 2017, the Union Plan was merged into the CVR Energy 401(k) Plan for Represented Employees. Contributions under the Union Plan were not material.