Spinoff Tables 2 (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and Cash Equivalents	$ 278.8	$ 384.6	$ 586.4	$ 464.8
Accounts Receivable, Net, Current	475.7	444.0
Inventory, Net	585.5	582.6
Deferred Tax Assets, Net of Valuation Allowance, Current	49.9	56.2
Other Assets, Current	51.5	61.7
Property, Plant and Equipment, Net	780.5	855.8	834.1
Goodwill	259.5	346.1	326.3
Non-current pension assets	176.2	223.5
Intangible Assets, Net (Excluding Goodwill)	239.8	207.4
Other Assets, Noncurrent	63.5	58.4
Total Assets	3,001.4	4,477.9	4,244.7
Accounts Payable, Current	143.9	139.9
Employee-related Liabilities, Current	146.7	131.1
Accrued Income Taxes, Current	80.2	106.7
Other Liabilities, Current	155.0	180.8
Long-term Debt, Excluding Current Maturities	522.1	176.4
Defined Benefit Pension Plan, Liabilities, Noncurrent	165.9	159.0
Other Postretirement Defined Benefit Plan, Liabilities, Noncurrent	141.8	138.3
Deferred Tax Liabilities, Net, Noncurrent	4.1	82.9
Other Liabilities, Noncurrent	44.6	55.9
TimkenSteel [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and Cash Equivalents		0			46.5
Accounts Receivable, Net, Current		122.7			178.9
Inventory, Net		227.3			238.2
Deferred Tax Assets, Net of Valuation Allowance, Current		13.6			20.2
Other Assets, Current		2.9			4.0
Property, Plant and Equipment, Net		702.2			751.6
Goodwill		12.6			12.6
Non-current pension assets		119.1			83.5
Intangible Assets, Net (Excluding Goodwill)		11.7			11.2
Other Assets, Noncurrent		3.6			2.6
Total Assets		1,215.7			1,349.3
Accounts Payable, Current		82.6			132.8
Employee-related Liabilities, Current		52.0			52.0
Accrued Income Taxes, Current		0.4			0.1
Other Liabilities, Current		17.3			15.9
Long-term Debt, Excluding Current Maturities		30.2			130.2
Defined Benefit Pension Plan, Liabilities, Noncurrent		20.0			24.5
Other Postretirement Defined Benefit Plan, Liabilities, Noncurrent		95.7			68.3
Deferred Tax Liabilities, Net, Noncurrent		84.1			91.7
Other Liabilities, Noncurrent		6.7			10.7
Liabilities		$ 389.0			$ 526.2