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Accounts Receivable - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024	Dec. 31, 2023
Receivables [Abstract]
Total accounts receivable, net	$ 2,078.7		$ 2,432.6
Allowance for credit losses	$ 21.0	$ 21.5	$ 23.7	$ 20.8
Percent accounts receivable outstanding, less than 60 days	94.00%
Cash Proceeds from Transfer Of Financial Assets Accounted For As Sales Derecognized Amount	$ 8,500.0	8,900.0
Fees And Interest Paid Under Receivables Purchase Agreements	$ 24.4	$ 29.5

X

- Definition

Amount of allowance for credit loss of accounts and financing receivables. Includes, but is not limited to, notes and loan receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-4

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

+ Details

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Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Accounts Receivable, Balance Outstanding Less Than 60 Days, Percent

+ References

No definition available.

+ Details

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Namespace Prefix:	wkc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
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X

- Definition

Cash Proceeds from Transfer Of Financial Assets Accounted For As Sales Derecognized Amount

+ References

No definition available.

+ Details

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Namespace Prefix:	wkc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Fees And Interest Paid Under Receivables Purchase Agreements

+ References

No definition available.

+ Details

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Namespace Prefix:	wkc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration