Earnings per Common Share (Tables)

12 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Calculated Earnings per share

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