Financing Arrangements (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Financing Arrangements (Textual) [Abstract]
Total Long-term debt	$ 465.1	$ 464.7
Series A Medium Term Note [Member]
Financing Arrangements (Textual) [Abstract]
Total Long-term debt	175.0	175.0
Fixed-rate Medium-Term Notes, Series A, Interest rate, Minimum	6.74%
Fixed-rate Medium-Term Notes, Series A, Interest rate, Maximum	7.76%
Debt Instruments, Maturity Date	May 01, 2028
Ohio Pollution Control Revenue Refunding Bonds [Member]
Financing Arrangements (Textual) [Abstract]
Total Long-term debt	8.5	8.5
Debt Instrument, Interest rate	0.21%
Debt Instruments, Maturity Date	Jun. 01, 2033
Senior Unsecured Notes [Member]
Financing Arrangements (Textual) [Abstract]
Total Long-term debt	249.9	249.9
Debt Instrument, Interest rate	6.00%
Debt Instruments, Maturity Date	Sep. 15, 2014
Ohio Water Development Revenue Refunding Bonds [Member]
Financing Arrangements (Textual) [Abstract]
Total Long-term debt	12.2	12.2
Debt Instrument, Interest rate	0.11%
Debt Instruments, Maturity Date	Nov. 01, 2025
Ohio Air Quality Development Revenue Refunding Bonds [Member]
Financing Arrangements (Textual) [Abstract]
Total Long-term debt	9.5	9.5
Debt Instrument, Interest rate	0.21%
Debt Instruments, Maturity Date	Nov. 01, 2025
Foreign Subsidiary [Member]
Financing Arrangements (Textual) [Abstract]
Maximum borrowing capacity under line of credit	215.6
Borrowings outstanding	7.4
Borrowings guarantees	0.1
Remaining Borrowing Capacity under Line of Credit Facility of Company's foreign subsidiaries	208.1
Line of Credit Accounts Receivable Securitization [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity	190.6
Financing Arrangements (Textual) [Abstract]
Maximum borrowing capacity under line of credit	200.0
Borrowings outstanding	0
Line of credit expiration date	Nov. 30, 2015
Senior Credit Facility [Member]
Financing Arrangements (Textual) [Abstract]
Maximum borrowing capacity under line of credit	500.0
Borrowings outstanding	0
Remaining Borrowing Capacity under Line of Credit Facility of Company's foreign subsidiaries	491.4
Line of credit expiration date	May 11, 2016
Number of Financial Covenant under senior Credit Facility	2
Foreign Subsidiary Long Term Borrowings [Member]
Financing Arrangements (Textual) [Abstract]
Maximum borrowing capacity under line of credit	9.6
Borrowings outstanding	9.6
Remaining Borrowing Capacity under Line of Credit Facility of Company's foreign subsidiaries	0
Variable Rate Lines of Credit [Member]
Financing Arrangements (Textual) [Abstract]
Line of credit stated variable interest rate, Low Range	0.62%	0.61%
Line of Credit stated variable interest rate, High Range	2.28%	2.28%
Letter of Credit [Member] \| Senior Credit Facility [Member]
Financing Arrangements (Textual) [Abstract]
Borrowings outstanding	$ 8.6

Name:	tkr_FinancingArrangementsTextualAbstract
Namespace Prefix:	tkr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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

Name:	tkr_LineOfCreditStatedVariableInterestRateHighRange
Namespace Prefix:	tkr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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

Name:	tkr_LineOfCreditStatedVariableInterestRateLowRange
Namespace Prefix:	tkr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of financial covenants under the entity's debt agreement(s).

+ References

No definition available.

+ Details

Name:	tkr_NumberOfFinancialCovenant
Namespace Prefix:	tkr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Interest rate stated in the contractual debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

When presenting a range of interest rates, the highest stated (contractual) rate for funds borrowed under the debt agreement as of the balance sheet date.

+ References

+ Details

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

- Definition

When presenting a range of interest rates, the lowest stated (contractual) rate for funds borrowed under the debt agreement as of the balance sheet date.

+ References

+ Details

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(2))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Interpretation (FIN)

-Number 45

-Paragraph 13

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

+ Details

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

- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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