
in thousands	September 30 2012		December 31 2011		September 30 2011
Short-term Borrowings
Bank line of credit						$0
Total short-term borrowings						$0
Long-term Debt
Bank line of credit		$0		$0
5.60% notes due 2012 ¹		134,548		134,508		$134,496
6.30% notes due 2013 ²		140,398		140,352		140,337
10.125% notes due 2015 ³		152,911		153,464		153,640
6.50% notes due 2016 ⁴		515,887		518,293		519,072
6.40% notes due 2017 ⁵		349,883		349,869		349,865
7.00% notes due 2018 ⁶		399,721		399,693		399,684
10.375% notes due 2018 ⁷		248,637		248,526		248,491
7.50% notes due 2021 ⁸		600,000		600,000		600,000
7.15% notes due 2037 ⁹		239,551		239,545		239,544
Medium-term notes		16,000		16,000		21,000
Industrial revenue bonds		14,000		14,000		14,000
Other notes		1,067		1,189		1,309
Total long-term debt including current maturities		$2,812,603		$2,815,439		$2,821,438
Less current maturities of long-term debt		285,153		134,762		5,215
Total long-term debt		$2,527,450		$2,680,677		$2,816,223

Estimated fair value of long-term debt		$2,796,358		$2,796,504		$2,649,207

Includes decreases for unamortized discounts, as follows: September 30, 2012 — $9 thousand, December 31, 2011 — $49 thousand and September 30, 2011 — $61 thousand. The effective interest rate for these notes is 6.57%.

Includes decreases for unamortized discounts, as follows: September 30, 2012 — $46 thousand, December 31, 2011 — $92 thousand and September 30, 2011 — $107 thousand. The effective interest rate for these notes is 7.48%.

Includes an increase for the unamortized portion of the deferred gain realized upon the August 2011 settlement of interest rate swaps, as follows: September 30, 2012 — $3,195 thousand, December 31, 2011 — $3,802 thousand and September 30, 2011 — $3,995 thousand. Additionally, includes decreases for unamortized discounts, as follows: September 30, 2012 — $284 thousand, December 31, 2011 — $338 thousand and September 30, 2011 — $355 thousand. The effective interest rate for these notes is 9.59%.

⁴

Includes an increase for the unamortized portion of the deferred gain realized upon the August 2011 settlement of interest rate swaps, as follows: September 30, 2012 — $15,887 thousand, December 31, 2011 — $18,293 thousand and September 30, 2011 — $19,072 thousand. The effective interest rate for these notes is 6.02%.

⁵

Includes decreases for unamortized discounts, as follows: September 30, 2012 — $117 thousand, December 31, 2011 — $131 thousand and September 30, 2011 — $135 thousand. The effective interest rate for these notes is 7.41%.

⁶

Includes decreases for unamortized discounts, as follows: September 30, 2012 — $279 thousand, December 31, 2011 — $307 thousand and September 30, 2011 — $316 thousand. The effective interest rate for these notes is 7.87%.

⁷

Includes decreases for unamortized discounts, as follows: September 30, 2012 — $1,363 thousand, December 31, 2011 — $1,474 thousand and September 30, 2011 — $1,509 thousand. The effective interest rate for these notes is 10.62%.

⁸

The effective interest rate for these notes is 7.75%.

⁹

Includes decreases for unamortized discounts, as follows: September 30, 2012 — $637 thousand, December 31, 2011 — $643 thousand and September 30, 2011 — $644 thousand. The effective interest rate for these notes is 8.05%.