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Related Party Transactions - Railcar Lease Agreements and Maintenance (Details) - Railcar Lease Agreement - CVR Partners, LP - American Railcar Leasing LLC $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2017 USD ($)	Jun. 30, 2017 railcar	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) railcar	Sep. 30, 2016 USD ($)
Related Party Transaction [Line Items]
Number of railcars leased | railcar				115
Rent expense | $	$ 0.2		$ 0.0	$ 0.7	$ 0.0
Number of railcars to be leased | railcar		70
Term of lease agreement	5 years
Maintenance expense | $				$ 0.2

X

- Definition

Lessee Leasing Arrangements, Operating Lease Commitments, Number of Railcars to be Leased

+ References

No definition available.

+ Details

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- Definition

Lessee Leasing Arrangements, Operating Leases, Number of Railcars

+ References

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- Definition

Maintenance costs incurred and are directly related to goods produced and sold during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

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- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

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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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