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Cost Classifications (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Costs and Expenses [Abstract]
Depreciation and amortization not included in direct operating expenses	$ 51.3	$ 48.1	$ 151.7	$ 134.5
Depreciation and amortization not included in selling, general and administrative expenses	$ 2.8	$ 2.0	$ 7.5	$ 6.3

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