CONSOLIDATED CONDENSED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012
Current assets:
Cash and cash equivalents	$ 480,480	$ 96,095
Accounts receivable, less reserve of $4,697 at June 30, 2013 and $942 at September 30, 2012	622,405	620,489
Inventories	86,586	78,777
Deferred income taxes	18,282	17,555
Prepaid expenses and other	68,277	74,693
Current assets of discontinued operations	4,460	7,619
Total current assets	1,280,490	895,228
Investments	287,634	451,144
Property, plant and equipment, net	4,613,301	4,351,571
Other assets	16,186	23,142
Total assets	6,197,611	5,721,085
Current liabilities:
Accounts payable	134,153	159,420
Accrued liabilities	254,732	176,615
Long-term debt due within one year	40,000	40,000
Current liabilities of discontinued operations	3,969	5,129
Total current liabilities	432,854	381,164
Noncurrent liabilities:
Long-term debt	195,000	195,000
Deferred income taxes	1,193,634	1,209,040
Other	80,608	98,393
Noncurrent liabilities of discontinued operations	491	2,490
Total noncurrent liabilities	1,469,733	1,504,923
Shareholders' equity:
Common stock, $.10 par value, 160,000,000 shares authorized, 108,476,709 shares and 107,598,889 shares issued as of June 30, 2013 and September 30, 2012, respectively and 106,455,102 and 105,697,693 shares outstanding as of June 30, 2013 and September 30, 2012, respectively	10,848	10,760
Preferred stock, no par value, 1,000,000 shares authorized, no shares issued
Additional paid-in capital	273,287	236,240
Retained earnings	3,996,530	3,505,295
Accumulated other comprehensive income	105,457	166,807
Treasury stock, at cost	(91,098)	(84,104)
Total shareholders' equity	4,295,024	3,834,998
Total liabilities and shareholders' equity	$ 6,197,611	$ 5,721,085