Earnings Per Share

6 Months Ended

Mar. 31, 2018

11.Earnings Per Share

Basic earnings per share (EPS) excludes dilution and is computed by dividing net income attributable to AECOM by the weighted average number of common shares outstanding for the period. Diluted EPS is computed by dividing net income attributable to AECOM by the weighted average number of common shares outstanding and potential common shares for the period. The Company includes as potential common shares the weighted average dilutive effects of equity awards using the treasury stock method. The computation of diluted loss per share for the three and six months ended March 31, 2018 excludes 2.7 million and 3.3 million, respectively, of potential common shares due to their anti-dilutive effect.

The following table sets forth a reconciliation of the denominators for basic and diluted earnings per share:

	Three Months Ended		Six Months Ended
	March 31, 2018	March 31, 2017	March 31, 2018	March 31, 2017
	(in millions)
Denominator for basic earnings per share	159.5	155.4	158.7	154.8
Potential common shares	—	3.3	—	3.5

Denominator for diluted earnings per share	159.5	158.7	158.7	158.3