Equity - Units Rollforward (Details) - shares	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in units)	24,901,891	24,880,237	24,825,109
GP units issued to maintain 2% interest (in units)	444	434	1,102
Unit-based compensation awards (in units)	21,772	21,220	54,026
Delek Holdings unit repurchases from public (in units)			0
Ending balance (in units)	24,924,107	24,901,891	24,880,237
General partner's ownership interest	2.00%	2.00%	2.00%
Units withheld for taxes (in units)	0	598	14,053
General Partner
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in units)	498,038	497,604	496,502
GP units issued to maintain 2% interest (in units)	444	434	1,102
Unit-based compensation awards (in units)	0	0	0
Delek Holdings unit repurchases from public (in units)			0
Ending balance (in units)	498,482	498,038	497,604
Common - Public \| Limited Partner
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in units)	9,109,807	9,088,587	9,263,415
GP units issued to maintain 2% interest (in units)	0	0	0
Unit-based compensation awards (in units)	21,772	21,220	54,026
Delek Holdings unit repurchases from public (in units)			(228,854)
Ending balance (in units)	9,131,579	9,109,807	9,088,587
Common - Delek Holdings \| Limited Partner
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in units)	15,294,046	15,294,046	15,065,192
GP units issued to maintain 2% interest (in units)	0	0	0
Unit-based compensation awards (in units)	0	0	0
Delek Holdings unit repurchases from public (in units)			228,854
Ending balance (in units)	15,294,046	15,294,046	15,294,046

General Partner units issued to maintain 2% interest

No definition available.

Name:	dk_GeneralPartnerunitsissuedtomaintain2interest
Namespace Prefix:	dk_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Previously issued common public units purchased by affiliated limited partner.

+ References

No definition available.

+ Details

Name:	dk_PartnersCapitalAccountUnitsCommonPublicUnitsPurchased
Namespace Prefix:	dk_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Partners' Capital Account, Units Withheld for Taxes

+ References

No definition available.

+ Details

Name:	dk_PartnersCapitalAccountUnitsWithheldforTaxes
Namespace Prefix:	dk_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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

- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

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

- Definition

The number of each class of partnership units outstanding at the balance sheet date. Units represent shares of ownership of the general, limited, and preferred partners.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04.16(a))
-URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04.16(b))
-URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-Subparagraph (SAB TOPIC 4.F)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770

+ Details

Name:	us-gaap_PartnersCapitalAccountUnits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of units issued for unit-based payment arrangement issued by partnership. Partner includes, but is not limited to, general, limited and preferred partners.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

Name:	us-gaap_PartnersCapitalAccountUnitsUnitbasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_PartnerTypeOfPartnersCapitalAccountAxis=us-gaap_GeneralPartnerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LimitedPartnersCapitalAccountByClassAxis=dk_CommonPublicMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PartnerTypeOfPartnersCapitalAccountAxis=us-gaap_LimitedPartnerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LimitedPartnersCapitalAccountByClassAxis=dk_CommonDelekMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: