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Long-Term Debt and Commercial Paper (Tables)
9 Months Ended
Sep. 30, 2020
Debt Disclosure [Abstract]  
Long-Term Debt
Long-term debt consists of the following:
Debt DescriptionMaturity DateInterest PayableSeptember 30,
2020
December 31,
2019
5.5% Senior Notes
February 1, 2020February 1 and August 1$— $350.0 
3.35% Senior Notes
January 15, 2021January 15 and July 15300.0 300.0 
3.5% Senior Notes
November 15, 2024May 15 and November 15450.0 450.0 
4.5% Senior Notes
October 1, 2025April 1 and October 1450.0 450.0 
3.8% Senior Notes
November 15, 2027May 15 and November 15300.0 300.0 
4.75% Senior Notes
June 1, 2030June 1 and December 1500.0 — 
Revolving credit facilityMarch 26, 2025Monthly— — 
Finance leases and other debt
Various dates through 2039
Monthly105.3 93.9 
2,105.3 1,943.9 
Less: unamortized debt discounts and debt issuance costs(15.6)(9.8)
Less: current maturities(307.7)(355.6)
Long-term debt, net of current maturities$1,782.0 $1,578.5