Earnings per Share (Tables)

9 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Schedule of Reconciliation of Basic Average Common Shares Outstanding

A reconciliation of basic average common shares outstanding to diluted average common shares outstanding is as follows (in millions):

	Three Months Ended June 30,		Nine Months Ended June 30,
	2021	2020	2021	2020
Basic average common shares outstanding	72.0	72.1	72.2	74.6
Impact of restricted shares, restricted share units and performance share units	0.8	—	1.0	0.9
Impact of convertible notes	—	—	—	0.8
Diluted average common shares outstanding (1)	72.8	72.1	73.2	76.3

(1) The potential effect of 0.6 million restricted shares and performance share units and 0.7 million shares issuable upon conversion of our convertibles notes are excluded from the diluted earnings per share calculation for the three months ended June 30, 2020 because inclusion in such a period would reduce the loss per share from continuing operations attributable to common shareholders.