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Business Segment Information | 6 Months Ended
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Jun. 30, 2023
Segment Reporting [Abstract] |
Business Segment Information | Our operations are divided into two primary reportable segments, the Gas Distribution Operations and the Electric Operations segments. The remainder of our operations, which are not significant enough on a stand-alone basis to warrant treatment as an operating segment, are presented as "Corporate and Other" and primarily are comprised of interest expense on holding company debt, and unallocated corporate costs and activities. Refer to Note 3, "Revenue Recognition," for additional information on our segments and their sources of revenues. The following table provides information about our reportable segments. We use operating income as our primary measurement for each of the reported segments and make decisions on finance, dividends, and taxes at the corporate level on a consolidated basis. Segment revenues include intersegment sales to affiliated subsidiaries, which are eliminated in consolidation. Affiliated sales are recognized on the basis of prevailing market, regulated prices or at levels provided for under contractual agreements. Operating income is derived from revenues and expenses directly associated with each segment.
| Three Months Ended June 30, |  | Six Months Ended June 30,
(in millions) | 2023 |  | 2022 |  | 2023 |  | 2022
Operating Revenues |  |  |  |  |  |  |
Gas Distribution Operations |  |  |  |  |  |  |
Unaffiliated | $ | 692.8 |  |  | $ | 741.1 |  |  | $ | 2,194.1 |  |  | $ | 2,177.8 |
Intersegment | 3.1 |  |  | 3.2 |  |  | 6.2 |  |  | 6.3 |
Total | 695.9 |  |  | 744.3 |  |  | 2,200.3 |  |  | 2,184.1 |
Electric Operations |  |  |  |  |  |  |
Unaffiliated | 397.0 |  |  | 437.1 |  |  | 861.5 |  |  | 867.2 |
Intersegment | 0.1 |  |  | 0.2 |  |  | 0.3 |  |  | 0.4 |
Total | 397.1 |  |  | 437.3 |  |  | 861.8 |  |  | 867.6 |
Corporate and Other |  |  |  |  |  |  |
Unaffiliated | 0.2 |  |  | 5.0 |  |  | 0.4 |  |  | 11.5 |
Intersegment | 122.8 |  |  | 120.7 |  |  | 239.5 |  |  | 234.2 |
Total | 123.0 |  |  | 125.7 |  |  | 239.9 |  |  | 245.7 |
Eliminations | (126.0) |  |  | (124.1) |  |  | (246.0) |  |  | (240.9) |
Consolidated Operating Revenues | $ | 1,090.0 |  |  | $ | 1,183.2 |  |  | $ | 3,056.0 |  |  | $ | 3,056.5 |
Operating Income (Loss) |  |  |  |  |  |  |
Gas Distribution Operations | $ | 115.4 |  |  | $ | 80.6 |  |  | $ | 562.3 |  |  | $ | 591.4 |
Electric Operations | 49.6 |  |  | 72.6 |  |  | 131.5 |  |  | 171.8 |
Corporate and Other | 3.9 |  |  | (9.9) |  |  | 6.1 |  |  | (19.6) |
Consolidated Operating Income | $ | 168.9 |  |  | $ | 143.3 |  |  | $ | 699.9 |  |  | $ | 743.6 |

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-22 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-15 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-31 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-42 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-40 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//280/tableOfContent Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 26 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-26 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 34 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-34 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-41 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-21 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-21 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 + Details
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