Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net Income	$ 82.0	$ 48.2	$ 120.1	$ 114.0
Other comprehensive income, net of tax:
Foreign currency translation adjustments	11.5	(13.8)	31.9	1.5
Pension and postretirement liability adjustment (net of the income tax benefit of $1.5 million)	0.0	0.4	0.1	0.8
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(1.4)	0.7	(2.2)	(1.6)
Other comprehensive income	10.1	(12.7)	29.8	0.7
Comprehensive Income	92.1	35.5	149.9	114.7
Less: comprehensive (loss) income attributable to noncontrolling interest	(1.1)	0.1	1.4	1.2
Comprehensive Income attributable to The Timken Company	$ 93.2	$ 35.4	$ 148.5	$ 113.5