XML 62 R33.htm IDEA: XBRL DOCUMENT v3.19.3

Related Party Transactions - Commercial Agreements (Details)	9 Months Ended
	Sep. 30, 2019
Minimum
Related Party Transaction [Line Items]
Term of agreement	5 years
Maximum
Related Party Transaction [Line Items]
Term of agreement	10 years

X

- Definition

The term of the agreement. Agreement could be a lease, debt, arrangement, services agreement or other arrangement.

+ References

No definition available.

+ Details

Name:	dk_TermOfAgreement
Namespace Prefix:	dk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

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.

+ References

No definition available.

+ Details

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

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: