Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 292.4	$ 374.7	$ 305.5
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	92.7	(19.9)	(67.4)
Pension and postretirement liability adjustments	(3.5)	66.9	0.4
Change in fair value of derivative financial instruments	(2.4)	(2.0)	3.8
Other comprehensive income (loss), net of tax	86.8	45.0	(63.2)
Comprehensive Income, net of tax	379.2	419.7	242.3
Less: comprehensive income (loss) attributable to noncontrolling interest	3.3	12.4	(4.2)
Comprehensive Income Attributable to The Timken Company	$ 375.9	$ 407.3	$ 246.5