Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Activities
Net income (loss) attributable to The Timken Company	$ 152.6	$ (70.8)	$ 170.8
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0.0	0.0	(24.0)
Net income attributable to noncontrolling interest	0.3	2.8	2.5
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	131.7	130.8	137.0
Impairment charges	3.9	3.3	98.9
Loss (gain) on sale of assets	1.6	11.8	(20.2)
Gain (Loss) on Disposition of Business	0.0	(28.7)	0.0
Deferred income tax provision (benefit)	(6.3)	(170.1)	(53.3)
Stock-based compensation expense	14.1	18.4	21.8
Excess tax benefit related to stock-based compensation, Operating Activities	0.0	(1.5)	(7.1)
Pension and other postretirement expense	63.5	502.9	62.0
Pension and other postretirement benefit contributions	(24.7)	(29.8)	(49.9)
Changes in operating assets and liabilities:
Accounts receivable	20.3	11.9	(48.3)
Inventories	10.1	52.8	(26.8)
Accounts payable, trade	12.2	11.6	8.0
Other accrued expenses	(4.7)	(51.7)	11.1
Income taxes	23.5	(40.4)	(15.3)
Other, net	3.9	21.5	14.3
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	402.0	374.8	281.5
Cash Provided by (Used in) Operating Activities, Discontinued Operations	0.0	0.0	25.5
Net Cash Provided by Operating Activities	402.0	374.8	307.0
Investing Activities
Capital expenditures	(137.5)	(105.6)	(126.8)
Acquisitions, net of cash acquired of $2.5 million in 2016 and $0.1 million in 2015	(72.6)	(213.3)	(21.7)
Proceeds from disposals of property, plant and equipment	1.5	9.8	18.5
Proceeds from Divestiture of Businesses, Net of Cash Divested	0.0	46.2	7.4
Increase (Decrease) in Marketable Securities, Restricted	(2.6)	(1.8)	4.9
Other	0.2	(0.5)	0.0
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	(211.0)	(265.2)	(117.7)
Cash Provided by (Used in) Investing Activities, Discontinued Operations	0.0	0.0	(77.0)
Net Cash Used by Investing Activities	(211.0)	(265.2)	(194.7)
Financing Activities
Cash dividends paid to shareholders	(81.6)	(87.0)	(90.3)
Purchase of treasury shares	(101.0)	(309.7)	(270.9)
Proceeds from exercise of stock options	4.3	4.1	16.8
Excess tax benefits related to stock-based compensation, Financing Activities	0.0	1.5	7.1
Proceeds from issuance of long-term debt	340.5	265.7	346.2
Deferred financing costs	0.0	(2.0)	(3.2)
Proceeds from Accounts Receivable Securitization	50.0	116.0	90.0
Repayments of Accounts Receivable Securitization	(50.1)	(67.0)	(90.0)
Payments on long-term debt	(345.3)	(190.6)	(250.7)
Short-term debt activity, net	7.2	6.0	(9.8)
Increase (Decrease) in Restricted Cash	(2.5)	14.8	0.0
Cash Transferred to TimkenSteel	0.0	0.0	(46.5)
Other	9.1	6.6	(0.9)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	(169.4)	(241.6)	(302.2)
Cash Provided by (Used in) Financing Activities, Discontinued Operations	0.0	0.0	100.0
Net Cash Used by Financing Activities	(169.4)	(241.6)	(202.2)
Effect of exchange rate changes on cash	(2.4)	(17.2)	(15.9)
Increase (decrease) In Cash and Cash Equivalents	19.2	(149.2)	(105.8)
Cash and cash equivalents at beginning of year	129.6	278.8	384.6
Cash and Cash Equivalents at End of Year	$ 148.8	$ 129.6	$ 278.8