CONSOLIDATED CONDENSED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Sep. 30, 2011
Current assets:
Cash and cash equivalents	$ 324,385	$ 364,246
Accounts receivable, less reserve of $746 at March 31, 2012 and $776 at September 30, 2011	511,203	460,540
Inventories	61,410	54,407
Deferred income taxes	21,890	19,855
Prepaid expenses and other	72,910	49,736
Current assets of discontinued operations	7,562	7,529
Total current assets	999,360	956,313
Investments	444,365	347,924
Property, plant and equipment, net	3,975,239	3,677,070
Other assets	22,108	22,584
Total assets	5,441,072	5,003,891
Current liabilities:
Accounts payable	98,007	103,852
Accrued liabilities	167,519	192,898
Long-term debt due within one year	115,000	115,000
Current liabilities of discontinued operations	5,198	4,979
Total current liabilities	385,724	416,729
Noncurrent liabilities:
Long-term debt	235,000	235,000
Deferred income taxes	1,113,285	975,280
Other	102,603	104,285
Noncurrent liabilities of discontinued operations	2,364	2,550
Total noncurrent liabilities	1,453,252	1,317,115
Shareholders' equity:
Common stock, $.10 par value, 160,000,000 shares authorized, 107,564,656 shares and 107,243,473 shares issued as of March 31, 2012 and September 30, 2011, respectively and 107,411,279 and 107,086,324 shares outstanding as of March 31, 2012 and September 30, 2011, respectively	10,756	10,724
Preferred stock, no par value, 1,000,000 shares authorized, no shares issued
Additional paid-in capital	225,917	210,909
Retained earnings	3,213,113	2,954,210
Accumulated other comprehensive income	158,804	98,908
Treasury stock, at cost	(6,494)	(4,704)
Total shareholders' equity	3,602,096	3,270,047
Total liabilities and shareholders' equity	$ 5,441,072	$ 5,003,891