Basis of Presentation and Accounting Policies (Tables)

6 Months Ended

Mar. 31, 2017

Accounting Policies [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table reconciles basic and diluted earnings per share (EPS) amounts (in millions, except per share amounts):

	Three Months Ended March 31,						Six Months Ended March 31,
	2017			2016			2017			2016
Net income	$	189.5		$	168.0		$	404.2		$	353.5
Less: Allocation to participating securities	(0.2		)	(0.2		)	(0.4		)	(0.4		)
Net income available to common shareowners	$	189.3		$	167.8		$	403.8		$	353.1
Basic weighted average outstanding shares	128.7			130.5			128.5			131.2
Effect of dilutive securities
Stock options	1.3			0.8			1.3			0.8
Performance shares	0.3			—			0.2			—
Diluted weighted average outstanding shares	130.3			131.3			130.0			132.0
Earnings per share:
Basic	$	1.47		$	1.29		$	3.14		$	2.69
Diluted	$	1.45		$	1.28		$	3.11		$	2.68