Weighted Average Common Shares

3 Months Ended

Dec. 31, 2017

Weighted Average Number of Shares Outstanding Reconciliation [Abstract]

Weighted Average Common Shares

Reconciliations of weighted-average shares for basic and diluted earnings per common share follow. Earnings allocated to participating securities were inconsequential.

	Three Months Ended December 31,
	2016	2017
Basic shares outstanding	642.8	638.2
Dilutive shares	1.5	2.3
Diluted shares outstanding	644.3	640.5