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Financing Arrangements - Schedule of Short-Term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Short-term Debt [Line Items]
Short-term debt	$ 12.0	$ 8.7
Foreign Subsidiary
Short-term Debt [Line Items]
Line of credit stated variable interest rate, low range (as a percent)	2.58%	3.36%
Line of credit stated variable interest rate, high range (as a percent)	7.81%	3.95%
Short-term debt	$ 12.0	$ 8.7

X

- Definition

High end of interest rates at the period end comprising the entity's portfolio of variable-rate lines of credit for certain foreign subsidiaries.

+ References

No definition available.

+ Details

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Namespace Prefix:	tkr_
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Balance Type:	na
Period Type:	instant

X

- Definition

Low end of interest rates at the period end comprising the entity's portfolio of variable-rate lines of credit for certain foreign subsidiaries.

+ References

No definition available.

+ Details

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Namespace Prefix:	tkr_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481372/852-10-55-10

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(1))
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+ Details

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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

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Period Type:	duration

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- Details

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Namespace Prefix:
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Balance Type:
Period Type: