Earnings Per Share - Denominator of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator:
Net income attributable to The Timken Company	$ 125.2	$ 105.0	$ 247.5	$ 223.2
Denominator:
Weighted average number of shares outstanding - basic (in shares)	71,882,843	73,660,410	72,162,267	74,234,300
Effect of dilutive securities:
Stock options and awards - based on the treasury stock method (in shares)	630,148	522,383	745,537	642,948
Weighted average number of shares outstanding assuming dilution of stock options and awards (in shares)	72,512,991	74,182,793	72,907,804	74,877,248
Basic earnings per share (in dollars per share)	$ 1.74	$ 1.43	$ 3.43	$ 3.01
Diluted earnings per share (in dollars per share)	$ 1.73	$ 1.42	$ 3.39	$ 2.98