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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified | Mar. 31, 2012 | Dec. 31, 2011 | Mar. 31, 2011
--- | --- | --- | ---
Current assets: |  |  |  |  |  |
Cash and cash equivalents | $ 91,389 |  | $ 162,772 |  | $ 136,016 |
Receivables, net | 539,589 |  | 646,251 |  | 533,279 |
Inventories | 313,341 |  | 274,205 |  | 262,696 |
Deferred income taxes | 42,239 |  | 40,407 |  | 45,206 |
Commodity derivative instruments | 26,698 |  | 27,687 |  | 13,250 |
Prepayments and other current assets | 64,897 |  | 43,316 |  | 73,556 |
Total current assets | 1,078,153 |  | 1,194,638 |  | 1,064,003 |
Investments | 113,799 |  | 109,424 |  | 117,015 |
Property, plant and equipment | 7,798,770 |  | 7,646,222 |  | 7,271,173 |
Less accumulated depreciation, depletion and amortization | 3,419,574 |  | 3,361,208 |  | 3,174,654 |
Net property, plant and equipment | 4,379,196 |  | 4,285,014 |  | 4,096,519 |
Deferred charges and other assets: [Abstract] |  |  |  |  |  |
Goodwill | 635,389 | [1] | 634,931 | [1] | 634,931 | [1]
Other intangible assets, net | 19,991 |  | 20,843 |  | 24,351 |
Other | 312,103 |  | 311,275 |  | 254,472 |
Total deferred charges and other assets | 967,483 |  | 967,049 |  | 913,754 |
Total assets | 6,538,631 |  | 6,556,125 |  | 6,191,291 |
Current liabilities: |  |  |  |  |  |
Long-term debt due within one year | 202,215 |  | 139,267 |  | 12,785 |
Accounts payable | 321,369 |  | 337,228 |  | 267,922 |
Taxes payable | 51,019 |  | 70,176 |  | 49,852 |
Dividends payable | 31,800 |  | 31,794 |  | 30,850 |
Accrued compensation | 28,463 |  | 47,804 |  | 25,774 |
Commodity derivative instruments | 20,183 |  | 13,164 |  | 40,499 |
Other accrued liabilities | 255,172 |  | 259,320 |  | 227,088 |
Total current liabilities | 910,221 |  | 898,753 |  | 654,770 |
Long-term debt | 1,213,974 |  | 1,285,411 |  | 1,414,077 |
Deferred credits and other liabilities: |  |  |  |  |  |
Deferred income taxes | 798,669 |  | 769,166 |  | 701,933 |
Other liabilities | 842,169 |  | 827,228 |  | 731,428 |
Total deferred credits and other liabilities | 1,640,838 |  | 1,596,394 |  | 1,433,361 |
Stockholders' equity: |  |  |  |  |  |
Preferred stocks | 15,000 |  | 15,000 |  | 15,000 |
Common stockholders' equity: |  |  |  |  |  |
Shares issued - 189,369,450 at March 31, 2012, 189,332,485 at March 31, 2011 and 189,332,485 at December 31, 2011 | 189,369 |  | 189,332 |  | 189,332 |
Other paid-in capital | 1,035,800 |  | 1,035,739 |  | 1,032,040 |
Retained earnings | 1,589,985 |  | 1,586,123 |  | 1,509,449 |
Accumulated other comprehensive loss | (52,930) |  | (47,001) |  | (53,112) |
Treasury stock at cost - 538,921 shares | (3,626) |  | (3,626) |  | (3,626) |
Total common stockholders' equity | 2,758,598 |  | 2,760,567 |  | 2,674,083 |
Total stockholders' equity | 2,773,598 |  | 2,775,567 |  | 2,689,083 |
Total liabilities and stockholders' equity | $ 6,538,631 |  | $ 6,556,125 |  | $ 6,191,291 |
[1] | Balance is presented net of accumulated impairment of $12.3 million at the pipeline and energy services segment, which occurred in prior periods.

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- Definition Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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