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, 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 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
Tax shortfall 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 share activity	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 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
Payments to Acquire Interest in Joint Venture	6.9							$ 6.6	$ 6.6
Dividends declared to noncontrolling interest	(0.2)						(0.2)
Dividends - $0.92, $1.00 and $1.03 per share for 2013, 2014 and 2015, respectively	(87.0)			(87.0)
Tax shortfall 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 share activity	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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	152.9			152.6			0.3
Foreign currency translation adjustments	(32.8)				(34.5)		1.7
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)	(0.6)				(0.6)
Change in fair value of derivative financial instruments, net of reclassifications	0.1				0.1
Payments to Acquire Interest in Joint Venture	9.7							$ 9.3	$ 9.3
Dividends declared to noncontrolling interest	(0.3)						(0.3)
Dividends - $0.92, $1.00 and $1.03 per share for 2013, 2014 and 2015, respectively	(81.6)			(81.6)
Tax shortfall from stock compensation	(1.1)		1.1
Stock-based compensation expense	14.1		14.1
Purchase of treasury shares	(101.0)					(101.0)
Stock option exercise activity	4.3		(2.5)			6.8
Restricted share activity	0.0		(8.7)			8.7
Shares surrendered for taxes	(1.9)					(1.9)
Ending Balance at Dec. 31, 2016	$ 1,306.0	$ 53.1	$ 906.9	$ 1,528.6	$ (322.0)	$ (891.7)	$ 31.1