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Debt (Tables)
9 Months Ended
Jun. 30, 2019
Debt Disclosure [Abstract]  
Debt
Debt consists of:
 
June 30,
2019
 
September 30,
2018
 
(In millions)
3.75% convertible senior notes due 2020, net of discount and fees
$
115.5

 
$
111.7

8.0% senior unsecured notes due 2024, net of fees
343.4

 

Senior unsecured revolving credit facility, maturing 2021

 

 
$
458.9

 
$
111.7