Earnings per Share (Tables)

6 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

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,
	2015	2014	2015	2014
Basic average common shares outstanding	97.9	97.6	97.9	97.5
Impact of stock options	0.1	—	0.1	—
Impact of restricted shares, restricted share units and performance share units	1.9	2.0	2.0	1.7
Impact of convertible notes	3.0	—	2.0	—
Diluted average common shares outstanding	102.9	99.6	102.0	99.2