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Cost Classifications (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Costs and Expenses [Abstract]
Depreciation and amortization not included in direct operating expenses	$ 48.6	$ 37.9
Depreciation and amortization not included in selling, general and administrative expenses	$ 2.5	$ 2.1

X

- Definition

Represents the amount of depreciation and amortization not included in direct operating expenses.

+ References

No definition available.

+ Details

Name:	cvi_DepreciationAndAmortizationNotIncludedInDirectOperatingExpenses
Namespace Prefix:	cvi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the amount of depreciation and amortization not included in selling, general and administrative expenses.

+ References

No definition available.

+ Details

Name:	cvi_DepreciationAndAmortizationNotIncludedInSellingGeneralAndAdministrativeExpenses
Namespace Prefix:	cvi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_CostsAndExpensesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration