Earnings Per Share

9 Months Ended

Jun. 30, 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. For the three and nine months ended June 30, 2018 and 2017, equity awards excluded from the calculation of potential common shares were not significant.

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

	Three Months Ended		Nine Months Ended
	June 30, 2018	June 30, 2017	June 30, 2018	June 30, 2017
	(in millions)
Denominator for basic earnings per share	160.4	155.8	159.3	155.1
Potential common shares	2.8	3.0	3.1	3.4

Denominator for diluted earnings per share	163.2	158.8	162.4	158.5