v3.26.1
DEBT (Tables)
3 Months Ended
Mar. 31, 2026
Debt Disclosure [Abstract]  
Schedule of Debt
Debt is detailed as follows:
in millionsEffective
Interest Rates
March 31
2026
December 31
2025
March 31
2025
Bank line of credit expires 2029
$0.0 $0.0 $0.0 
Commercial paper expires 2029
197.0 0.0 0.0 
Total short-term debt$197.0 $0.0 $0.0 
Commercial paper expires 2029 1
0.0 0.0 550.0 
3.90% notes due 2027
4.00%400.0 400.0 400.0 
4.95% notes due 2029
5.17%500.0 500.0 500.0 
3.50% notes due 2030
3.94%750.0 750.0 750.0 
5.35% notes due 2034
5.48%750.0 750.0 750.0 
7.15% notes due 2037
8.05%129.2 129.2 129.2 
4.50% notes due 2047
4.59%700.0 700.0 700.0 
4.70% notes due 2048
5.42%460.9 460.9 460.9 
5.70% notes due 2054
5.82%750.0 750.0 750.0 
Other notes0.0 0.5 0.6 
Total long-term debt - face value$4,440.1 $4,440.6 $4,990.7 
Unamortized discounts and debt issuance costs(77.1)(78.5)(82.3)
Total long-term debt - book value$4,363.0 $4,362.1 $4,908.4 
Current maturities0.0 (0.4)(0.5)
Total long-term debt - reported value$4,363.0 $4,361.7 $4,907.9 
Estimated fair value of long-term debt$4,243.0 $4,333.3 $4,794.5 
1.Borrowings on the commercial paper program are classified as long-term if we have the intent and ability to extend payment beyond twelve months.
Schedule of Standby Letters of Credit Our standby letters of credit as of March 31, 2026 are summarized by purpose in the table below:
in millions
Risk management insurance$9.8 
Reclamation/restoration requirements14.4 
Total standby letters of credit$24.2