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Lines of Credit and Financing Arrangements (Tables)
 9 Months Ended
Sep. 30, 2024
Debt Disclosure [Abstract]  
Summary of outstanding debt obligations
The following table summarizes our outstanding debt obligations and their classification in the accompanying Consolidated Balance Sheets (in millions) as of:

September 30, 2024December 31, 2023
Commercial paper$— $150.0 
Current maturities of long-term debt:
Finance lease obligations$13.2 $12.1 
Senior unsecured notes300.0 — 
Debt issuance costs(0.5)— 
    Total current maturities of long-term debt
$312.7 $12.1 
Long-Term Debt:
Finance lease obligations$34.6 $32.7 
Credit agreement— 20.0 
Senior unsecured notes800.0 1,100.0 
Debt issuance costs(7.0)(9.6)
Total long-term debt$827.6 $1,143.1 
Total debt$1,140.3 $1,305.2 
Summary of weighted average borrowing rate facility
Our weighted average borrowing rate on the Program was as follows as of:
September 30, 2024December 31, 2023
Weighted average borrowing rate— %5.66 %
Our weighted average borrowing rate on the facility was as follows as of:
September 30, 2024December 31, 2023
Weighted average borrowing rate— %6.67 %