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Earnings Per Share - Schedule of Reconciliation of the Numerator and the Denominator of Basic Earnings Per Share and Diluted Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2024
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Numerator:                      
Net income attributable to The Timken Company $ 71.2 $ 81.8 $ 96.2 $ 103.5 $ 58.7 $ 87.9 $ 125.2 $ 122.3 $ 352.7 $ 394.1 $ 407.4
Denominator:                      
Weighted average number of shares outstanding - basic (in shares)                 70,198,067 71,377,656 73,602,247
Effect of dilutive securities:                      
Stock options and awards - based on the treasury stock method (in shares)                 552,415 704,228 721,592
Weighted average number of shares outstanding, assuming dilution of stock options and awards (in shares)                 70,750,482 72,081,884 74,323,839
Basic earnings per share (in dollars per share) $ 1.02 $ 1.17 $ 1.37 $ 1.47 $ 0.84 $ 1.24 $ 1.74 $ 1.69 $ 5.02 $ 5.52 $ 5.54
Diluted earnings per share (in dollars per share) $ 1.01 $ 1.16 $ 1.36 $ 1.46 $ 0.83 $ 1.23 $ 1.73 $ 1.67 $ 4.99 $ 5.47 $ 5.48