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Business segment data (Tables) | 6 Months Ended
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Jun. 30, 2011
Business segment data [Abstract] |
Information on the Company's businesses |
| The information below follows the same accounting policies as described in Note 1 of the Company's Notes to Consolidated Financial Statements in the 2010 Annual Report. Information on the Company's businesses was as follows:
Three Months Ended June 30, 2011 |  | External Operating Revenues |  |  | Inter- segment Operating Revenues |  |  | Earnings on Common Stock |
|  | (In thousands) |
Electric |  | $ | 49,986 |  |  | $ | - |  |  | $ | 4,807 |
Natural gas distribution |  |  | 164,626 |  |  |  | - |  |  |  | 1,902 |
Pipeline and energy services |  |  | 59,926 |  |  |  | 12,504 |  |  |  | 4,772 |
|  |  | 274,538 |  |  |  | 12,504 |  |  |  | 11,481 |
Construction services |  |  | 192,697 |  |  |  | 5,379 |  |  |  | 6,138 |
Natural gas and oil production |  |  | 87,390 |  |  |  | 25,392 |  |  |  | 21,326 |
Construction materials and contracting |  |  | 375,613 |  |  |  | - |  |  |  | 4,980 |
Other |  |  | 519 |  |  |  | 2,301 |  |  |  | 971 |
|  |  | 656,219 |  |  |  | 33,072 |  |  |  | 33,415 |
Intersegment eliminations |  |  | - |  |  |  | (45,576 | ) |  |  | - |
Total |  | $ | 930,757 |  |  | $ | - |  |  | $ | 44,896 |
Three Months Ended June 30, 2010 |  | External Operating Revenues |  |  | Inter- segment Operating Revenues |  |  | Earnings on Common Stock |
|  | (In thousands) |
Electric |  | $ | 45,683 |  |  | $ | - |  |  | $ | 4,947 |
Natural gas distribution |  |  | 160,138 |  |  |  | - |  |  |  | 74 |
Pipeline and energy services |  |  | 66,356 |  |  |  | 14,143 |  |  |  | 9,541 |
|  |  | 272,177 |  |  |  | 14,143 |  |  |  | 14,562 |
Construction services |  |  | 188,182 |  |  |  | 8 |  |  |  | 2,923 |
Natural gas and oil production |  |  | 84,406 |  |  |  | 26,400 |  |  |  | 24,035 |
Construction materials and contracting |  |  | 361,625 |  |  |  | - |  |  |  | 5,659 |
Other |  |  | 54 |  |  |  | 2,213 |  |  |  | 1,588 |
|  |  | 634,267 |  |  |  | 28,621 |  |  |  | 34,205 |
Intersegment eliminations |  |  | - |  |  |  | (42,764 | ) |  |  | - |
Total |  | $ | 906,444 |  |  | $ | - |  |  | $ | 48,767 |
Six Months Ended June 30, 2011 |  | External Operating Revenues |  |  | Inter- segment Operating Revenues |  |  | Earnings on Common Stock |
|  | (In thousands) |
Electric |  | $ | 107,831 |  |  | $ | - |  |  | $ | 13,331 |
Natural gas distribution |  |  | 535,010 |  |  |  | - |  |  |  | 29,418 |
Pipeline and energy services |  |  | 109,177 |  |  |  | 37,245 |  |  |  | 11,691 |
|  |  | 752,018 |  |  |  | 37,245 |  |  |  | 54,440 |
Construction services |  |  | 394,877 |  |  |  | 6,596 |  |  |  | 10,771 |
Natural gas and oil production |  |  | 165,801 |  |  |  | 50,933 |  |  |  | 37,596 |
Construction materials and contracting |  |  | 519,146 |  |  |  | - |  |  |  | (16,423 | )
Other |  |  | 720 |  |  |  | 4,589 |  |  |  | 1,318 |
|  |  | 1,080,544 |  |  |  | 62,118 |  |  |  | 33,262 |
Intersegment eliminations |  |  | - |  |  |  | (99,363 | ) |  |  | - |
Total |  | $ | 1,832,562 |  |  | $ | - |  |  | $ | 87,702 |
Six Months Ended June 30, 2010 |  | External Operating Revenues |  |  | Inter- segment Operating Revenues |  |  | Earnings on Common Stock |
|  | (In thousands) |
Electric |  | $ | 95,379 |  |  | $ | - |  |  | $ | 10,832 |
Natural gas distribution |  |  | 509,162 |  |  |  | - |  |  |  | 23,416 |
Pipeline and energy services |  |  | 127,881 |  |  |  | 41,228 |  |  |  | 18,332 |
|  |  | 732,422 |  |  |  | 41,228 |  |  |  | 52,580 |
Construction services |  |  | 341,247 |  |  |  | 32 |  |  |  | 3,051 |
Natural gas and oil production |  |  | 156,066 |  |  |  | 62,327 |  |  |  | 46,246 |
Construction materials and contracting |  |  | 511,432 |  |  |  | - |  |  |  | (14,478 | )
Other |  |  | 54 |  |  |  | 4,451 |  |  |  | 2,968 |
|  |  | 1,008,799 |  |  |  | 66,810 |  |  |  | 37,787 |
Intersegment eliminations |  |  | - |  |  |  | (108,038 | ) |  |  | - |
Total |  | $ | 1,741,221 |  |  | $ | - |  |  | $ | 90,367 |

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8721-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8736-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 27, 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13816-109267 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8813-108599 + Details
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