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Notes Payable and Long-Term Debt (Tables)
12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Principal components of long-term debt
The principal components of long-term debt are as follows (in millions):
December 31, 2024December 31, 2023
3.3%, Senior Notes due 2027
$400.0 $400.0 
3.7%, Senior Notes due 2032
800.0 800.0 
Less unamortized discounts and debt issuance costs(8.8)(10.5)
Long-term debt less unamortized discounts and debt issuance costs1,191.2 1,189.5 
Finance leases and other debt10.4 10.1 
Less current maturities(1.2)(0.5)
Long-term debt$1,200.4 $1,199.1 
Schedule of Maturities of Long-Term Debt
Maturities of finance leases and other debt at December 31, 2024 were as follows (in millions):

2025$1.2 
20260.5 
2027400.5 
20280.5 
20290.6 
2030 and thereafter807.1 
Total maturities of finance leases and other debt
$1,210.4