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CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands | Jun. 30, 2011 | Dec. 31, 2010 | Jun. 30, 2010
--- | --- | --- | ---
Current assets: |  |  |
Cash and cash equivalents | $ 107,768 | $ 222,074 | $ 65,792
Receivables, net | 566,366 | 583,743 | 502,454
Inventories | 277,327 | 252,897 | 260,163
Deferred income taxes | 33,732 | 32,890 | 17,755
Commodity derivative instruments | 14,234 | 15,123 | 24,932
Prepayments and other current assets | 71,604 | 60,441 | 98,203
Total current assets | 1,071,031 | 1,167,168 | 969,299
Investments | 116,368 | 103,661 | 142,212
Property, plant and equipment | 7,394,616 | 7,218,503 | 7,085,632
Less accumulated depreciation, depletion and amortization | 3,236,417 | 3,103,323 | 3,000,663
Net property, plant and equipment | 4,158,199 | 4,115,180 | 4,084,969
Deferred charges and other assets: |  |  |
Goodwill | 634,931 | 634,633 | 634,654
Other intangible assets, net | 23,337 | 25,271 | 26,199
Other | 253,515 | 257,636 | 255,473
Total deferred charges and other assets | 911,783 | 917,540 | 916,326
Total assets | 6,257,381 | 6,303,549 | 6,112,806
Current liabilities: |  |  |
Short-term borrowings | 0 | 20,000 | 3,700
Long-term debt due within one year | 62,571 | 72,797 | 72,551
Accounts payable | 304,049 | 301,132 | 266,069
Taxes payable | 45,065 | 56,186 | 39,976
Dividends payable | 30,850 | 30,773 | 29,802
Accrued compensation | 37,978 | 40,121 | 35,989
Commodity derivative instruments | 18,686 | 24,428 | 20,160
Other accrued liabilities | 224,220 | 222,639 | 172,446
Total current liabilities | 723,419 | 768,076 | 640,693
Long-term debt | 1,369,534 | 1,433,955 | 1,508,714
Deferred credits and other liabilities: |  |  |
Deferred income taxes | 727,562 | 672,269 | 627,256
Other liabilities | 711,516 | 736,447 | 708,403
Total deferred credits and other liabilities | 1,439,078 | 1,408,716 | 1,335,659
Stockholders' equity : |  |  |
Preferred stocks | 15,000 | 15,000 | 15,000
Common stockholders' equity: |  |  |
Shares issued -- $1.00 par value, 189,332,485 at June 30, 2011, 188,672,532 at June 30, 2010 and 188,901,379 at December 31, 2010 | 189,332 | 188,901 | 188,673
Other paid-in capital | 1,033,366 | 1,026,349 | 1,020,206
Retained earnings | 1,523,546 | 1,497,439 | 1,407,950
Accumulated other comprehensive loss | (32,268) | (31,261) | (463)
Treasury stock at cost - 538,921 shares | (3,626) | (3,626) | (3,626)
Total common stockholders' equity | 2,710,350 | 2,677,802 | 2,612,740
Total stockholders' equity | 2,725,350 | 2,692,802 | 2,627,740
Total liabilities and stockholders' equity | $ 6,257,381 | $ 6,303,549 | $ 6,112,806

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