Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	Total	Stated Capital	Other Paid-In Capital	Earnings Invested in the Business	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Noncontrolling Interest	Holme Service Limited [Member]	Holme Service Limited [Member] Noncontrolling Interest
Beginning Balance at Dec. 31, 2012	$ 2,246.6	$ 53.1	$ 891.4	$ 2,411.2	$ (1,013.2)	$ (110.3)	$ 14.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	263.0			262.7			0.3
Foreign currency translation adjustments	(19.0)				(11.5)		(7.5)
Pension and postretirement liability adjustment (net of income tax of $226.5 million, $23.9 million and $155.4 million for 2013, 2014 and 2015, respectively)	398.3				398.3
Change in fair value of derivative financial instruments, net of reclassifications	0.3				0.3
Change in ownership of noncontrolling interest	8.9		1.3				7.6
Dividends declared to noncontrolling interest	(2.8)						(2.8)
Dividends - $0.92, $1.00 and $1.03 per share for 2013, 2014 and 2015, respectively	(87.5)			(87.5)
Excess tax benefit from stock compensation	10.9		10.9
Stock-based compensation expense	18.6		18.6
Purchase of treasury shares	(189.2)					(189.2)
Stock option exercise activity	7.8		(22.0)			29.8
Restricted shares (issued) surrendered	1.0		(3.8)			4.8
Shares surrendered for taxes	(8.3)					(8.3)
Ending Balance at Dec. 31, 2013	2,648.6	53.1	896.4	2,586.4	(626.1)	(273.2)	12.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	173.3			170.8			2.5
Foreign currency translation adjustments	(41.8)				(41.3)		(0.5)
Pension and postretirement liability adjustment (net of income tax of $226.5 million, $23.9 million and $155.4 million for 2013, 2014 and 2015, respectively)	(43.1)				(43.1)
Change in fair value of derivative financial instruments, net of reclassifications	(0.4)				(0.4)
Dividends declared to noncontrolling interest	(1.1)						(1.1)
Dividends - $0.92, $1.00 and $1.03 per share for 2013, 2014 and 2015, respectively	(90.3)			(90.3)
Transfer to TimkenSteel	(823.1)			(1,051.5)	228.4
Excess tax benefit from stock compensation	7.1		7.1
Stock-based compensation expense	23.9		23.9
Purchase of treasury shares	(270.9)					(270.9)
Stock option exercise activity	16.7		(23.8)			40.5
Restricted shares (issued) surrendered	0.9		(4.2)			5.1
Shares surrendered for taxes	(10.7)					(10.7)
Ending Balance at Dec. 31, 2014	1,589.1	53.1	899.4	1,615.4	(482.5)	(509.2)	12.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(68.0)			(70.8)			2.8
Foreign currency translation adjustments	(73.5)				(71.5)		(2.0)
Pension and postretirement liability adjustment (net of income tax of $226.5 million, $23.9 million and $155.4 million for 2013, 2014 and 2015, respectively)	265.9				265.9
Change in fair value of derivative financial instruments, net of reclassifications	1.1				1.1
Proceeds from Divestiture of Interest in Joint Venture	(0.2)						(0.2)
Payments to Acquire Interest in Joint Venture	6.9							$ 6.6	$ 6.6
Dividends - $0.92, $1.00 and $1.03 per share for 2013, 2014 and 2015, respectively	(87.0)			(87.0)
Excess tax benefit from stock compensation	1.5		1.5
Stock-based compensation expense	18.4		18.4
Purchase of treasury shares	(309.7)					(309.7)
Stock option exercise activity	4.2		(7.5)			11.7
Restricted shares (issued) surrendered	0.2		(6.7)			6.9
Shares surrendered for taxes	(4.0)					(4.0)
Ending Balance at Dec. 31, 2015	$ 1,344.6	$ 53.1	$ 905.1	$ 1,457.6	$ (287.0)	$ (804.3)	$ 20.1