Earnings per Share (Tables)

6 Months Ended

Mar. 31, 2022

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 March 31,		Six Months Ended March 31,
	2022	2021	2022	2021
Basic average common shares outstanding	70.7	72.4	70.4	72.3
Impact of restricted shares, restricted share units and performance share units	0.7	1.0	0.9	1.0
Diluted average common shares outstanding	71.4	73.4	71.3	73.3