XML 53 R42.htm IDEA: XBRL DOCUMENT
v3.24.2

Derivative Instruments - Balance Sheet Location (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | $ 631.4 | $ 840.7
Gross Derivative Liabilities | 551.4 | 697.8
Commodity Contract [Member] |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 605.7 | 791.8
Gross Derivative Liabilities | 532.7 | 669.1
Interest Rate Contract [Member] |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 10.5 | 14.8
Foreign Exchange Contract [Member] |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 15.3 | 34.1
Gross Derivative Liabilities | 18.6 | 28.7
Designated as Hedging Instrument [Member] |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 15.6 | 39.9
Gross Derivative Liabilities | 4.8 | 20.9
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Other non-current assets |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 0.0 | 0.3
Gross Derivative Liabilities | 0.0 | 0.0
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Short-term derivative liabilities, net |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 5.2 | 24.8
Gross Derivative Liabilities | 4.8 | 20.9
Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Short-term derivative assets, net |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 10.5 | 12.7
Gross Derivative Liabilities | 0.0 | 0.0
Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Other non-current assets |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 0.0 | 2.2
Gross Derivative Liabilities | 0.0 | 0.0
Not Designated as Hedging Instrument [Member] |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 615.8 | 800.8
Gross Derivative Liabilities | 546.6 | 676.8
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Short-term derivative assets, net |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 263.4 | 343.9
Gross Derivative Liabilities | 76.9 | 73.1
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Other non-current assets |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 107.2 | 139.8
Gross Derivative Liabilities | 17.8 | 17.2
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Short-term derivative liabilities, net |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 132.6 | 161.8
Gross Derivative Liabilities | 264.1 | 340.0
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Other long-term liabilities |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 97.3 | 121.2
Gross Derivative Liabilities | 169.1 | 217.9
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Short-term derivative assets, net |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 13.4 | 24.7
Gross Derivative Liabilities | 11.8 | 9.8
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other non-current assets |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 0.5 | 0.6
Gross Derivative Liabilities | 0.2 | 0.5
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Short-term derivative liabilities, net |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 1.2 | 8.7
Gross Derivative Liabilities | 6.3 | 18.3
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other long-term liabilities |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Gross Derivative Assets | 0.2 | 0.0
Gross Derivative Liabilities | $ 0.3 | $ 0.0

X
- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483444/210-20-55-22 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483466/210-20-50-3 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483444/210-20-55-7 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4D -Subparagraph (c)(2) -SubTopic 20 -Topic 860 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481326/860-20-50-4D + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483444/210-20-55-22 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483466/210-20-50-3 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483444/210-20-55-7 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4D -Subparagraph (c)(2) -SubTopic 20 -Topic 860 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481326/860-20-50-4D + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CommodityContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=wkc_ShortTermDerivativeLiabilitiesNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=wkc_ShortTermDerivativeAssetsNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |