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Unaudited Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2021
Sep. 30, 2021
Current Assets:    
Cash and cash equivalents $ 234,196 $ 917,534
Short-term investments 207,068 198,700
Accounts receivable, net of allowance of $1,730 and $2,068, respectively 282,381 228,894
Inventories of materials and supplies, net 87,272 84,057
Prepaid expenses and other, net 80,956 85,928
Assets held-for-sale 62,821 71,453
Total current assets 954,694 1,586,566
Investments 193,624 135,444
Property, plant and equipment, net 3,066,326 3,127,287
Other Noncurrent Assets:    
Goodwill 45,653 45,653
Intangible assets, net 72,042 73,838
Operating lease right-of-use assets 47,356 49,187
Other assets, net 12,559 16,153
Total other noncurrent assets 177,610 184,831
Total assets 4,392,254 5,034,128
Current Liabilities:    
Accounts payable 109,032 71,996
Dividends payable 26,819 27,332
Current portion of long-term debt, net 0 483,486
Accrued liabilities 263,125 283,492
Total current liabilities 398,976 866,306
Noncurrent Liabilities:    
Long-term debt, net 542,236 541,997
Deferred income taxes 545,869 563,437
Other 126,551 147,757
Noncurrent liabilities - discontinued operations 2,031 2,013
Total noncurrent liabilities 1,216,687 1,255,204
Commitments and contingencies (Note 13)
Shareholders' Equity:    
Common stock, $.10 par value, 160,000,000 shares authorized, 112,222,865 shares issued as of both December 31, 2021 and September 30, 2021, and 105,731,795 and 107,898,859 shares outstanding as of December 31, 2021 and September 30, 2021, respectively 11,222 11,222
Preferred stock, no par value, 1,000,000 shares authorized, no shares issued 0 0
Additional paid-in capital 514,969 529,903
Retained earnings 2,495,206 2,573,375
Accumulated other comprehensive loss (19,850) (20,244)
Treasury stock, at cost, 6,491,070 shares and 4,324,006 shares as of December 31, 2021 and September 30, 2021, respectively (224,956) (181,638)
Total shareholders’ equity 2,776,591 2,912,618
Total liabilities and shareholders' equity $ 4,392,254 $ 5,034,128