EARNINGS PER COMMON SHARE (Tables)

9 Months Ended

Jun. 30, 2015

Earnings Per Share [Abstract]

Earnings Per Common Share

	Three Months Ended June 30,				Nine Months Ended June 30,
(Millions, except per share amounts)	2015		2014		2015		2014
Basic EPS:
Net Income	$	14.1	$	11.7	$	155.6	$	99.5
Less: Income allocated to participating securities	0.1		—		0.5		0.4
Net Income Available to Common Shareholders	$	14.0	$	11.7	$	155.1	$	99.1
Weighted Average Shares Outstanding	43.2		34.9		43.1		33.3
Basic Earnings Per Share of Common Stock	$	0.32	$	0.34	$	3.59	$	2.97
Diluted EPS:
Net Income	$	14.1	$	11.7	$	155.6	$	99.5
Less: Income allocated to participating securities	0.1		—		0.5		0.4
Net Income Available to Common Shareholders	$	14.0	$	11.7	$	155.1	$	99.1
Weighted Average Shares Outstanding	43.2		34.9		43.1		33.3
Dilutive Effect of Stock Options, Restricted Stock and Restricted Stock Units	0.1		0.1		0.1		0.1
Weighted Average Diluted Shares	43.3		35.0		43.2		33.4
Diluted Earnings Per Share of Common Stock	$	0.32	$	0.33	$	3.59	$	2.97