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Borrowing Arrangements (Tables)
9 Months Ended
Jun. 30, 2020
Long-term Debt and Lease Obligation [Abstract]  
Components of Long-Term Debt
The components of our long-term debt are presented below.
 June 30,September 30,
 20202019
 (in millions)
5.5% Senior Notes$450.0  $450.0  
ABL Agreement—  —  
Finance leases2.8  2.1  
452.8  452.1  
Less deferred financing costs5.1  5.8  
Less current portion1.2  0.9  
Long-term debt$446.4  $445.4