Acquisitions (Tables)

12 Months Ended

Sep. 30, 2013

Business Combinations [Abstract]

Pro Forma Financial Information

Unaudited Pro Forma Financial Information

	Year ended
	September 30, 2011
	(in millions, except per share amounts)
Revenue	$	1,227.8
Net income	$	93.0
Earnings per share—Basic	$	0.79
Earnings per share—Diluted	$	0.77