Approximate amount expected to recognized in LIFO expense by end of year.

No definition available.

Name:	tkr_ApproximateAmountExpectedToRecognizedInLifoExpenseByEndOfYear
Namespace Prefix:	tkr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The percentage increase in costs creating the increase to the current LIFO expense estimate.

+ References

No definition available.

+ Details

Name:	tkr_IncreaseCostsImpactingLifoExpenseEstimate
Namespace Prefix:	tkr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Reflects the net change in the LIFO inventory reserve during the reporting period. The LIFO inventory reserve reflects the difference between (a) inventory at the lower of LIFO cost or market and (b) inventory at replacement cost or at the lower of some acceptable inventory accounting method (such as FIFO or average cost), or market. If material, reflects an excess of replacement or current cost over stated LIFO value parenthetically on the balance sheet or in a note to the financial statements.

+ References

No definition available.

+ Details

Name:	tkr_IncreaseDecreaseInInventoryReserveLifo
Namespace Prefix:	tkr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The approximate effect of a one percent increase in inventory costs on the current LIFO expense or income estimate.

+ References

No definition available.

+ Details

Name:	tkr_IncreaseInCurrentLifoExpenseEstimateDueToOnePercentIncreaseInCosts
Namespace Prefix:	tkr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The approximate effect of a one percent increase in inventory quantity to the current LIFO expense or income estimate.

+ References

No definition available.

+ Details

Name:	tkr_IncreaseInCurrentLifoExpenseEstimateDueToOnePercentIncreaseInInventory
Namespace Prefix:	tkr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The percentage increase in inventory quantities that would have an effect on the current LIFO expense estimate.

+ References

No definition available.

+ Details

Name:	tkr_InventoryQuantitiesIncreaseImpactingCurrentLifoExpenseEstimate
Namespace Prefix:	tkr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Definition

Reflects the difference between (a) inventory at the lower of LIFO cost or market and (b) inventory at replacement cost or at the lower of some acceptable inventory accounting method (such as FIFO or average cost), or market. If material, reflects an excess of replacement or current cost over stated LIFO value parenthetically on the balance sheet or in a note to the financial statements.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph c

-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 210.5-02.6(c))

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

+ Details

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

- Definition

The percentage of FIFO (first in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

+ References

No definition available.

+ Details

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

- Definition

The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

+ References

No definition available.

+ Details

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

Inventories (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Inventories (Textual) [Abstract]
Percentage of LIFO Inventory	55.00%		55.00%
Percentage of FIFO Inventory	45.00%		45.00%
Inventory Reserve (LIFO)	$ 296.9		$ 296.9		$ 287.7
Increase (decrease) in inventory reserve (LIFO)	0.1	9.7	9.2	15.7
Amount expected to be recognized in LIFO expenses by the end of the year			17.6
The percentage increase in costs creating the increase to the current LIFO expense estimate			1.00%
Increase in current LIFO expense estimate due to one percent increase in costs			8.7
The percentage increase in inventory quantities that would have an effect on the current LIFO expense estimate			1.00%
Increase in current LIFO expense estimate due to one percent increase in inventory			$ 0