Debt (Tables)

12 Months Ended

Sep. 30, 2013

Debt Disclosure [Abstract]

Composition of Long Term Debt

Long-term debt comprises the following at September 30:

	2013		2012
Term Loan Credit Agreement	$	175,000	$	—
Senior Notes:
6.375%, due September 2013	—		108,000
5.75%, due September 2016	175,000		175,000
6.21%, due September 2036	100,000		100,000
Medium-Term Notes:
5.37%, due August 2013	—		25,000
5.16%, due May 2015	20,000		20,000
7.37%, due October 2015	22,000		22,000
5.64%, due December 2015	50,000		50,000
6.17%, due June 2017	20,000		20,000
7.25%, due November 2017	20,000		20,000
5.67%, due January 2018	20,000		20,000
6.50%, due August 2033	20,000		20,000
6.13%, due October 2034	20,000		20,000
Total long-term debt	642,000		600,000
Less: current maturities	—		(133,000		)
Total long-term debt due after one year	$	642,000	$	467,000