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Long-term and Short-term Debt
12 Months Ended
Sep. 30, 2014
Debt Disclosure [Abstract]  
Long-term and Short-term Debt
Long-term and Short-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


At September 30, 2014 and 2013, our total borrowing capacity under our five year unsecured revolving credit facility expiring in May 2018 was $750.0 million. We can increase the aggregate amount of this credit facility by up to $250.0 million, subject to the consent of the banks in the credit facility. We have not borrowed against this credit facility during the years ended September 30, 2014 and 2013. Borrowings under this credit facility bear interest based on short-term money market rates in effect during the period borrowings are outstanding. The terms of this credit facility contain covenants under which we would be in default if our debt-to-total-capital ratio was to exceed 60 percent. Separate short-term unsecured credit facilities of approximately $126.6 million at September 30, 2014 were available to non-U.S. subsidiaries. Borrowings under our non-U.S. credit facilities during fiscal 2014 and 2013 were not significant. We were in compliance with all covenants under our credit facilities during the years ended September 30, 2014 and 2013. There were no significant commitment fees or compensating balance requirements under any of our credit facilities.
Our short-term debt obligations are primarily comprised of commercial paper borrowings. Commercial paper borrowings outstanding were $325.0 million at September 30, 2014 and $179.0 million at September 30, 2013. The weighted average interest rate of the commercial paper outstanding was 0.17 percent at September 30, 2014 and 2013.
Interest payments were $58.1 million during 2014, $59.7 million during 2013 and $59.0 million during 2012.