CONSOLIDATED CONDENSED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Sep. 30, 2012
Current assets:
Cash and cash equivalents	$ 172,993	$ 96,095
Accounts receivable, less reserve of $4,715 at March 31, 2013 and $942 at September 30, 2012	603,238	620,489
Inventories	82,725	78,777
Deferred income taxes	18,497	17,555
Prepaid expenses and other	50,450	74,693
Current assets of discontinued operations	4,073	7,619
Total current assets	931,976	895,228
Investments	501,383	451,144
Property, plant and equipment, net	4,560,562	4,351,571
Other assets	18,531	23,142
Total assets	6,012,452	5,721,085
Current liabilities:
Accounts payable	94,653	159,420
Accrued liabilities	166,237	176,615
Long-term debt due within one year	40,000	40,000
Current liabilities of discontinued operations	3,647	5,129
Total current liabilities	304,537	381,164
Noncurrent liabilities:
Long-term debt	195,000	195,000
Deferred income taxes	1,252,297	1,209,040
Other	85,560	98,393
Noncurrent liabilities of discontinued operations	426	2,490
Total noncurrent liabilities	1,533,283	1,504,923
Shareholders' equity:
Common stock, $.10 par value, 160,000,000 shares authorized, 108,425,884 shares and 107,598,889 shares issued as of March 31, 2013 and September 30, 2012, respectively and 106,404,277 and 105,697,693 shares outstanding as of March 31, 2013 and September 30, 2012, respectively	10,843	10,760
Preferred stock, no par value, 1,000,000 shares authorized, no shares issued
Additional paid-in capital	265,943	236,240
Retained earnings	3,783,890	3,505,295
Accumulated other comprehensive income	205,054	166,807
Treasury stock, at cost	(91,098)	(84,104)
Total shareholders' equity	4,174,632	3,834,998
Total liabilities and shareholders' equity	$ 6,012,452	$ 5,721,085