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ACQUISITION OF ASSETS OF COLUMBIA GAS OF MASSACHUSETTS (Tables) | 12 Months Ended
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Dec. 31, 2022
Business Combination and Asset Acquisition [Abstract] |
Summary of Unaudited Pro Forma Financial Information | Pro forma net income excludes the impact of assets and liabilities not assumed by Eversource and non-recurring costs associated with the transaction.
(Pro forma amounts in millions, except share amounts) | For the Year Ended December 31, 2020 |
Operating Revenues | $ | 9,273 |  |
Net Income Attributable to Common Shareholders | 1,265 |  |
Basic EPS | 3.73 |  |
Diluted EPS | 3.72 |  |

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- Definition Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2) -URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(3) -URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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