Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net Income	$ 91.6	$ 91.3	$ 314.8	$ 237.1
Other comprehensive income, net of tax:
Foreign currency translation adjustments	(32.9)	63.5	(54.1)	9.2
Pension and postretirement liability adjustments	(1.5)	(1.2)	(4.8)	(4.0)
Change in fair value of marketable securities		(0.1)	0.0	0.0
Other comprehensive (loss) income, net of tax	(31.9)	60.4	(54.4)	5.0
Comprehensive Income, net of tax	59.7	151.7	260.4	242.1
Less: comprehensive income (loss) attributable to noncontrolling interest	3.7	3.0	7.8	(0.1)
Comprehensive Income Attributable to The Timken Company	56.0	148.7	252.6	242.2
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments and Tax	$ 2.5	$ (1.8)	$ 4.5	$ (0.2)