Earnings Per Share

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Earnings Per Share

The following table sets forth the reconciliation of the numerator and the denominator of basic earnings per share and diluted earnings per share for the years ended December 31, 2017, 2016 and 2015: 

	2017		2016		2015
Numerator:
Net income attributable to The Timken Company	$	203.4	$	140.8	$	188.6
Less: undistributed earnings allocated to nonvested stock	—		—		—
Net income available to common shareholders for basic earnings per share and diluted earnings per share	$	203.4	$	140.8	$	188.6
Denominator:
Weighted-average number of shares outstanding – basic	77,736,398		78,516,029		84,631,778
Effect of dilutive securities:
Stock options and awards - based on the treasury stock method	1,174,751		718,295		714,468
Weighted-average number of shares outstanding, assuming dilution of stock options and awards	78,911,149		79,234,324		85,346,246
Basic earnings per share	$	2.62	$	1.79	$	2.23
Diluted earnings per share	$	2.58	$	1.78	$	2.21

The exercise prices for certain stock options that the Company has awarded exceed the average market price of the Company’s common shares. Such stock options are antidilutive and were not included in the computation of diluted earnings per share. The antidilutive stock options outstanding were 512,657, 2,826,733 and 1,986,907 during 2017, 2016 and 2015, respectively.