DEBT (Tables)

3 Months Ended

Mar. 31, 2021

DEBT [Abstract]

Debt

	Effective	March 31	December 31	March 31
in thousands	Interest Rates	2021	2020	2020
Short-term Debt
Bank line of credit expires 2025 1		$                  0	$                0	$                0
Total short-term debt		$                  0	$                0	$                0
Long-term Debt
Bank line of credit expires 2025 1		$                  0	$                0	$                0
Floating-rate notes due 2020		0	0	250,000
Floating-rate notes due 2021		0	500,000	500,000
8.85% notes due 2021	8.88%	6,000	6,000	6,000
4.50% notes due 2025	4.65%	400,000	400,000	400,000
3.90% notes due 2027	4.00%	400,000	400,000	400,000
3.50% notes due 2030	3.94%	750,000	750,000	0
7.15% notes due 2037	8.05%	129,239	129,239	129,239
4.50% notes due 2047	4.59%	700,000	700,000	700,000
4.70% notes due 2048	5.42%	460,949	460,949	460,949
Other notes	0.88%	11,277	11,711	179
Total long-term debt - face value		$    2,857,465	$  3,357,899	$  2,846,367
Unamortized discounts and debt issuance costs		(69,128)	(70,224)	(60,776)
Total long-term debt - book value		$    2,788,337	$  3,287,675	$  2,785,591
Less current maturities		15,436	515,435	25
Total long-term debt - reported value		$    2,772,901	$  2,772,240	$  2,785,566
Estimated fair value of long-term debt		$    3,219,828	$  3,443,225	$  2,926,140

¹ Borrowings on the bank line of credit 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.

Standby Letters of Credit

in thousands
Standby Letters of Credit
Risk management insurance	$       48,982
Reclamation/restoration requirements	7,353
Total	$       56,335