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Business Segment Information (Tables) | 3 Months Ended
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Mar. 31, 2022
Segment Reporting Information, Additional Information [Abstract] |
Schedule of Segment Reporting Information, by Segment | Segment information was as follows (in thousands):
Total assets (net of intercompany eliminations) as of: | March 31, 2022 |  | December 31, 2021
Electric Utilities | $ | 3,804,335 |  |  | $ | 3,796,662 |
Gas Utilities | 5,232,594 |  |  | 5,246,370 |
Corporate and Other | 93,725 |  |  | 88,864 |
Total assets | $ | 9,130,654 |  |  | $ | 9,131,896 |
Three Months Ended March 31, 2022 | External Operating Revenue |  | Inter-company Operating Revenue |  | Total Revenues
Contract Customers | Other Revenues | Contract Customers | Other Revenues
Segment: |  |  |  |  |  |  |
Electric Utilities | $ | 202,739 |  | $ | 870 |  |  | $ | 2,929 |  | $ | — |  |  | $ | 206,538 |
Gas Utilities | 619,030 |  | 931 |  |  | 1,319 |  | 112 |  |  | 621,392 |
Inter-company eliminations | — |  | — |  |  | (4,248) |  | (112) |  |  | (4,360) |
Total | $ | 821,769 |  | $ | 1,801 |  |  | $ | — |  | $ | — |  |  | $ | 823,570 |
Three Months Ended March 31, 2021 | External Operating Revenue |  | Inter-company Operating Revenue |  | Total Revenues
Contract Customers | Other Revenues | Contract Customers | Other Revenues
Segment: |  |  |  |  |  |  |
Electric Utilities | $ | 231,718 |  | $ | 807 |  |  | $ | 2,879 |  | $ | — |  |  | $ | 235,404 |
Gas Utilities | 398,499 |  | 2,408 |  |  | 1,520 |  | 92 |  |  | 402,519 |
Inter-company eliminations | — |  | — |  |  | (4,399) |  | (92) |  |  | (4,491) |
Total | $ | 630,217 |  | $ | 3,215 |  |  | $ | — |  | $ | — |  |  | $ | 633,432 |
|  | Three Months Ended March 31,
|  |  | 2022 | 2021
Operating income (loss): |  |  |  |
Electric Utilities |  |  | $ | 50,746 |  | $ | 39,343 |
Gas Utilities |  |  | 123,540 |  | 102,094 |
Corporate and Other |  |  | (933) |  | (3,122) |
Operating income |  |  | 173,353 |  | 138,315 |
Interest expense, net |  |  | (38,545) |  | (37,600) |
Other income, net |  |  | 704 |  | 266 |
Income tax expense |  |  | (14,488) |  | (494) |
Net income |  |  | 121,024 |  | 100,487 |
Net income attributable to non-controlling interest |  |  | (3,498) |  | (4,171) |
Net income available for common stock |  |  | $ | 117,526 |  | $ | 96,316 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 + Details
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