Earnings per Common Share

12 Months Ended

Sep. 30, 2017

Basic earnings per share is calculated based upon the weighted average number of outstanding common shares for the period, plus the effect of deferred vested shares. Diluted earnings per share is calculated consistent with the basic earnings per share calculation plus the effect of dilutive unissued common shares related to stock-based employee compensation programs. For all periods presented, anti-dilutive stock options were excluded from the calculation of diluted earnings per share. Cumulative treasury stock acquired, less cumulative shares reissued, have been excluded in determining the average number of shares outstanding.

Earnings per share are calculated as follows (share information in thousands):



	Year Ended September 30
	2017		2016		2015
Net income attributable to common shareholders	$	133.6	$	124.1	$	47.7

Average shares outstanding - Basic	65,599		65,333		57,249
Add potential effect of exercise of stock options and other unvested equity awards	1,626		1,263		1,287
Average shares outstanding - Diluted	67,225		66,596		58,536

Net income attributable to common shareholders per common share - Basic	$	2.04	$	1.90	$	0.83

Net income attributable to common shareholders per common share - Diluted	$	1.99	$	1.86	$	0.82