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EARNINGS PER SHARE | 12 Months Ended
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Dec. 31, 2022
Earnings Per Share [Abstract] |
EARNINGS PER SHARE | EARNINGS PER SHARE Basic EPS is computed based upon the weighted average number of common shares outstanding during each period. Diluted EPS is computed on the basis of the weighted average number of common shares outstanding plus the potential dilutive effect of certain share-based compensation awards and the equity forward sale agreement, as if they were converted into outstanding common shares. The dilutive effect of unvested RSU and performance share awards, as well as the equity forward sale agreement, is calculated using the treasury stock method. RSU and performance share awards are included in basic weighted average common shares outstanding as of the date that all necessary vesting conditions have been satisfied. Earnings per share dilution related to the equity forward sale agreement was determined under the treasury stock method until settlement of the forward sale agreement. Under this method, the number of Eversource common shares used in calculating diluted EPS was deemed to be increased by the excess, if any, of the number of shares that would be issued upon physical settlement of the forward sale agreement less the number of shares that would be purchased by Eversource in the market (based on the average market price during the same reporting period) using the proceeds receivable upon settlement (based on the adjusted forward sale price at the end of that reporting period). Share dilution occurred when the average market price of Eversource's common shares was higher than the adjusted forward sale price. Eversource physically settled all remaining shares under the forward sale agreement as of March 26, 2020. For the years ended December 31, 2022 and 2021, there were no antidilutive share awards excluded from the computation. For the year ended December 31, 2020, 39,560 antidilutive share awards were excluded from the EPS computation, as their impact would have been antidilutive. Antidilutive shares pertained to a purchase option extended to underwriters in connection with Eversource's June 2020 common share issuance. The following table sets forth the components of basic and diluted EPS:
Eversource (Millions of Dollars, except share information) | For the Years Ended December 31,
2022 |  | 2021 |  | 2020
Net Income Attributable to Common Shareholders | $ | 1,404.9 |  |  | $ | 1,220.5 |  |  | $ | 1,205.2 |
Weighted Average Common Shares Outstanding: |  |  |  |  |
Basic | 346,783,444 |  |  | 343,972,926 |  |  | 338,836,147 |
Dilutive Effect of: |  |  |  |  |
Share-Based Compensation Awards and Other | 463,324 |  |  | 658,130 |  |  | 738,994 |
Equity Forward Sale Agreement | — |  |  | — |  |  | 271,921 |
Total Dilutive Effect | 463,324 |  |  | 658,130 |  |  | 1,010,915 |
Diluted | 347,246,768 |  |  | 344,631,056 |  |  | 339,847,062 |
Basic EPS | $ | 4.05 |  |  | $ | 3.55 |  |  | $ | 3.56 |
Diluted EPS | $ | 4.05 |  |  | $ | 3.54 |  |  | $ | 3.55 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI https://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3630-109257 + Details
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