Long-term and Short-term Debt (Tables)

12 Months Ended

Sep. 30, 2014

Debt Disclosure [Abstract]

Long-term debt

Long-term debt consists of (in millions):

	September 30,
	2014			2013
5.65% notes, payable in December 2017	$	250.0		$	250.0
6.70% debentures, payable in January 2028	250.0			250.0
6.25% debentures, payable in December 2037	250.0			250.0
5.20% debentures, payable in January 2098	200.0			200.0
Unamortized discount and other	(44.4		)	(44.9		)
Long-term debt	$	905.6		$	905.1