Disposal Group, Including Discontinued Operation, Number Of Retail Stores

No definition available.

Name:	dk_DisposalGroupIncludingDiscontinuedOperationNumberOfRetailStores
Namespace Prefix:	dk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Disposal Group, Including Discontinued Operation, Number Of Subsidiaries Sold

+ References

No definition available.

+ Details

Name:	dk_DisposalGroupIncludingDiscontinuedOperationNumberOfSubsidiariesSold
Namespace Prefix:	dk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Disposal Group, Including Discontinued Operation, Rebate Arrangement Obligation

+ References

No definition available.

+ Details

Name:	dk_DisposalGroupIncludingDiscontinuedOperationRebateArrangementObligation
Namespace Prefix:	dk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Disposal Group, Including Discontinued Operation, Rebate Arrangement Obligation, Term

+ References

No definition available.

+ Details

Name:	dk_DisposalGroupIncludingDiscontinuedOperationRebateArrangementObligationTerm
Namespace Prefix:	dk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Disposal Group, Including Discontinued Operations, Agreement, Ownership Percentage In Disposed Asset

+ References

No definition available.

+ Details

Name:	dk_DisposalGroupIncludingDiscontinuedOperationsAgreementOwnershipPercentageInDisposedAsset
Namespace Prefix:	dk_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483475/205-20-45-3B

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483499/205-20-50-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483475/205-20-45-3

+ Details

Name:	us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

+ References

No definition available.

+ Details

Name:	us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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

- Details

Name:	us-gaap_DisposalGroupClassificationAxis=us-gaap_SegmentDiscontinuedOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=dk_RetailStoresRetailPurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Discontinued Operations - Narrative (Details) - Discontinued Operations - Retail Stores $ in Millions		12 Months Ended
	Jul. 31, 2024 USD ($) store subsidiary	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2024 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity interest sold in disposition of business	100.00%
Number of subsidiaries sold \| subsidiary	4
Retail stores sold in disposition of business \| store	249
Cash consideration					$ 390.2
Gain on sale of Retail Stores		$ 97.5	$ 0.0	$ 0.0
Discontinued operation, rebate arrangement obligation	$ 36.0
Discontinued operation, rebate arrangement obligation, term	6 years