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Financing Arrangements (Tables)
12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Schedule of long-term debt, including current maturites Long-term debt as of December 31, 2024 and 2023, respectively, consisted of the following:
20242023
(in millions)
Stated Interest Rate

Effective Interest Rate
Maturity Date
Stated Value
Combination Fair
Market
Value Adjustment
Discount on Notes Issuance
Carrying Value

Stated Value
Combination Fair
Market
Value Adjustment
Discount on Notes Issuance
Carrying Value
Unsecured notes
4.05% -
5.63%
5.49%2027-
2043
$2,500.0 $— $(5.1)$2,494.9 $2,500.0 $— $(5.8)$2,494.2 
Unsecured debentures
7.30%
7.19%2028147.1 0.3 — 147.4 147.1 0.4 — 147.5 
Term Loan30 Day SOFR7.08%2033570.0 — — 570.0 500.0 — — 500.0 
Finance leases
0.77% -
13.02%
5.75%2025-
2034
144.8 — — 144.8 180.0 — — 180.0 
Other(a)
6.53% -
8.00%
5.59%2025-
2026
17.1 3.4 — 20.5 35.0 5.0 — 40.0 
Total long-term debt
3,379.0 3.7 (5.1)3,377.6 3,362.1 5.4 (5.8)3,361.7 
Less current portion
45.4 0.4 (0.5)45.3 129.2 1.3 (0.4)130.1 
Total long-term debt, less current maturities
$3,333.6 $3.3 $(4.6)$3,332.3 $3,232.9 $4.1 $(5.4)$3,231.6 
______________________________
(a) Includes deferred financing fees related to our long-term debt.
Scheduled maturities of long-term debt
Scheduled maturities of long-term debt are as follows for the periods ending December 31:
(in millions) 
2025$45.3 
202633.8 
2027717.5 
2028561.0 
202957.2 
Thereafter1,962.8 
Total$3,377.6