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Borrowing Arrangements (Tables)
3 Months Ended
Dec. 31, 2019
Long-term Debt and Lease Obligation [Abstract]  
Components of Long-Term Debt
The components of our long-term debt are presented below.
 December 31,September 30,
 20192019
 (in millions)
5.5% Senior Notes$450.0  $450.0  
ABL Agreement—  —  
Finance leases2.0  2.1  
452.0  452.1  
Less deferred financing costs5.6  5.8  
Less current portion0.9  0.9  
Long-term debt$445.5  $445.4