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Long-Term Debt and Commercial Paper (Tables)
12 Months Ended
Dec. 31, 2021
Debt Disclosure [Abstract]  
Long-term debt
Long-term debt at December 31 consisted of the following:
Debt DescriptionMaturity DateInterest Payable20212020
3.35% Senior Notes
January 15, 2021January 15 and July 15$— $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 
1.95% Senior Notes
August 1, 2028February 1 and August 1400.0 — 
4.75% Senior Notes
June 1, 2030June 1 and December 1 500.0 500.0 
2.4% Senior Notes
August 1, 2031February 1 and August 1450.0 — 
Revolving credit facilityMarch 26, 2025Monthly— — 
Finance leases and other debtVarious dates through 2041330.6 116.6 
2,880.6 2,116.6 
Less: unamortized debt discounts and debt issuance costs(22.2)(14.8)
Less: current maturities(12.2)(309.2)
Long-term debt, net of current maturities$2,846.2 $1,792.6 
Aggregate maturities of non-vehicle long-term debt
At December 31, 2021, aggregate maturities of non-vehicle long-term debt were as follows:
Year Ending December 31:
2022$12.2 
202311.9 
2024462.3 
2025463.2 
202614.1 
Thereafter1,916.9 
$2,880.6