XML 34 R56.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Commitments and Contingencies Crude Oil Releases (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Macedonia Crude Oil Release [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Cost incurred for environmental remediation | $ 0 | $ 0 | $ 0 | $ 0
Accrual for expected fines and penalties | 1.3 |  | 1.3 |
Maximum Exposure for Environmental Remediation under Omnibus Agreement |  |  | 0.3 |
Magnolia Station Spill [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Cost incurred for environmental remediation |  |  |  | 0.3
Accrual for expected fines and penalties | 0.1 |  | 0.1 |
Maximum Exposure for Environmental Remediation under Omnibus Agreement |  |  | 0.3 |
Haynesville Crude Oil Release [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Cost incurred for environmental remediation | 0 |  | 1.0 |
Accrual for expected fines and penalties | 1.3 |  | 1.3 |
Maximum Exposure for Environmental Remediation under Omnibus Agreement |  |  | $ 1.0 |

X
- Definition Cost incurred during the period to clean up and remediate site. + References No definition available. + Details
Name: | dk_Costincurredforenvironmentalremediation
Namespace Prefix: | dk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount accrued for expected penalties or fines assessed in connection with an environmental mater. + References No definition available. + Details
Name: | dk_LossContingencyAccrualexpectedfinesandpenalties
Namespace Prefix: | dk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum Exposure for Environmental Remediation under Omnibus Agreement + References No definition available. + Details
Name: | dk_MaximumExposureForEnvironmentalRemediationUnderOmnibusAgreement
Namespace Prefix: | dk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration