CONSOLIDATED CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2017	Sep. 30, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 572,787	$ 905,561
Short-term investments	39,894	44,148
Accounts receivable, less reserve of $6,352 in June 30, 2017 and $2,696 in September 30, 2016	440,872	375,169
Inventories	138,403	124,325
Prepaid expenses and other	58,425	78,067
Assets held for sale		45,352
Current assets of discontinued operations	7	64
Total current assets	1,250,388	1,572,686
NONCURRENT ASSETS:
Investments	76,986	84,955
Property, plant and equipment, at cost	5,062,914	5,144,733
Goodwill	51,967	4,718
Intangible assets, net of amortization	51,569	919
Other assets	20,067	24,008
Total noncurrent assets	5,263,503	5,259,333
TOTAL ASSETS	6,513,891	6,832,019
CURRENT LIABILITIES:
Accounts payable	137,206	95,422
Accrued liabilities	196,643	234,639
Current liabilities of discontinued operations	80	59
Total current liabilities	333,929	330,120
NONCURRENT LIABILITIES:
Long-term debt less unamortized discount and debt issuance costs	492,637	491,847
Deferred income taxes	1,325,250	1,342,456
Other	108,946	102,781
Noncurrent liabilities of discontinued operations	3,225	3,890
Total noncurrent liabilities	1,930,058	1,940,974
SHAREHOLDERS' EQUITY:
Common stock, $.10 par value, 160,000,000 shares authorized, 111,897,106 shares and 111,400,339 shares issued as of June 30, 2017 and September 30, 2016 respectively and 108,581,547 shares and 108,077,916 shares outstanding as of June 30, 2017 and September 30, 2016 respectively	11,190	11,140
Preferred stock, no par value, 1,000,000 shares authorized, no shares issued
Additional paid-in capital	478,231	448,452
Retained earnings	3,954,705	4,289,807
Accumulated other comprehensive income (loss)	(4,101)	(204)
Total shareholders' equity before treasury stock	4,440,025	4,749,195
Treasury stock, at cost	(190,121)	(188,270)
Total shareholders' equity	4,249,904	4,560,925
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 6,513,891	$ 6,832,019