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Long-Term Debt (Tables)
3 Months Ended
Mar. 31, 2025
Debt Disclosure [Abstract]  
Schedule of Long-Term Debt
Long-term debt consisted of the following:
(Millions of dollars)March 31,
2025
December 31,
2024
5.625% senior notes due 2027 (net of unamortized discount of $0.8 at March 31, 2025 and $0.9 at December 31, 2024)
$299.2 $299.1 
4.75% senior notes due 2029 (net of unamortized discount of $2.8 at March 31, 2025 and $3.0 at December 31, 2024)
497.2 497.0 
3.75% senior notes due 2031 (net of unamortized discount of $3.7 at March 31, 2025 and $3.8 at December 31, 2024)
496.3 496.2 
Term loan due 2028 (effective interest rate of 6.21% at March 31, 2025 and 6.44% at December 31, 2024) net of unamortized discount of $0.4 at March 31, 2025 and $0.4 at December 31, 2024
384.6 385.6 
Revolving credit facility, due 2026 (weighted average interest rate of 6.59% at March 31, 2025)
200.0 56.0 
Capitalized lease obligations, autos and equipment, due through 2028
3.1 3.2 
Capitalized lease obligations, buildings, due through 2059
114.0 116.5 
Unamortized debt issuance costs(4.6)(5.2)
Total long-term debt1,989.8 1,848.4 
Less current maturities15.6 15.7 
Total long-term debt, net of current$1,974.2 $1,832.7