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Benefit Plans (Details) (Defined-contribution 401(k) plans, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 plan	Dec. 31, 2012	Dec. 31, 2011
Benefit Plans
Number of defined-contribution 401(k) plans	2
Vesting schedule for employer's matching funds	3 years
Matching contributions made by the company during the year	$ 6.1	$ 4.5	$ 2.3
CVR
Benefit Plans
Employee contribution limit per calendar year as a percentage of annual salaries	50.00%
Employee contribution limit per calendar year as a percentage of annual income sharing	100.00%
Nonunion plan | CVR
Benefit Plans
Percentage of employer match	100.00%
Percent of employees' gross pay matched	6.00%
Union plan | CVR
Benefit Plans
Percentage of employer match	100.00%
Percent of employees' gross pay matched	6.00%

X

- Definition

The limit of annual employee contributions to the plan per calendar year as a percentage of annual income sharing.

+ References

No definition available.

+ Details

Name:	cvi_DefinedContributionPlanEmployeeContributionLimitPercentageOfAnnualIncomeSharing
Namespace Prefix:	cvi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the period over which the matching contributions vest under the defined contribution plan.

+ References

No definition available.

+ Details

Name:	cvi_DefinedContributionPlanMatchingContributionVestingPeriod
Namespace Prefix:	cvi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	cvi_DefinedContributionPlansDisclosureLineItems
Namespace Prefix:	cvi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of defined-contribution 401(k) plans.

+ References

No definition available.

+ Details

Name:	cvi_DefinedContributionPlansNumber
Namespace Prefix:	cvi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942

+ Details

Name:	us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration