DEBT (Tables)

9 Months Ended

Sep. 30, 2020

DEBT [Abstract]

Debt

	Effective	September 30	December 31	September 30
in thousands	Interest Rates	2020	2019	2019
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	250,000	250,000
Floating-rate notes due 2021	1.10%	500,000	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	0	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	460,948
Other notes	0.86%	11,718	185	191
Total long-term debt - face value		$    3,357,906	$  2,846,373	$  2,846,378
Unamortized discounts and debt issuance costs		(71,399)	(62,033)	(63,286)
Total long-term debt - book value		$    3,286,507	$  2,784,340	$  2,783,092
Less current maturities		509,435	25	24
Total long-term debt - reported value		$    2,777,072	$  2,784,315	$  2,783,068
Estimated fair value of long-term debt		$    3,341,097	$  3,073,693	$  3,036,337

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	$       49,531
Reclamation/restoration requirements	7,098
Total	$       56,629