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DEBT (Tables)

3 Months Ended

Mar. 31, 2025

Debt Disclosure [Abstract]

Schedule of Debt

Debt is detailed as follows:

in millions			Effective Interest Rates			March 31 2025			December 31 2024			March 31 2024
Bank line of credit expires 2029 1						$	0.0		$	0.0		$	0.0
Commercial paper expires 2029 1						0.0			0.0			0.0
Total short-term debt						$	0.0		$	0.0		$	0.0
Bank line of credit expires 2029 1						$	0.0		$	0.0		$	0.0
Commercial paper expires 2029 1						550.0			550.0			550.0
4.50% notes due 2025						0.0			400.0			400.0
3.90% notes due 2027			4.00%			400.0			400.0			400.0
4.95% notes due 2029			5.17%			500.0			500.0			0.0
3.50% notes due 2030			3.94%			750.0			750.0			750.0
5.35% notes due 2034			5.48%			750.0			750.0			0.0
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			0.0
Other notes						0.6			1.0			1.0
Total long-term debt - face value						$	4,990.7		$	5,391.1		$	3,391.1
Unamortized discounts and debt issuance costs						(82.3)			(83.7)			(59.9)
Total long-term debt - book value						$	4,908.4		$	5,307.4		$	3,331.2
Current maturities						(0.5)			(400.5)			(0.5)
Total long-term debt - reported value						$	4,907.9		$	4,906.9		$	3,330.7
Estimated fair value of long-term debt						$	4,794.5		$	4,762.6		$	3,205.2

1Borrowings on the bank line of credit and commercial paper are classified as short-term if we intend to repay within twelve months and 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, 2025 are summarized by purpose in the table below:

in millions
Risk management insurance			$	10.1
Reclamation/restoration requirements			23.4
Total standby letters of credit			$	33.5

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Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation.

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Tabular disclosure of short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
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