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SEGMENT INFORMATION (Tables) | 3 Months Ended
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Mar. 31, 2022
Segment Reporting [Abstract] |
Financial information of reportable segments | The following tables show summarized financial information related to our reportable segments for the three months ended March 31, 2022 and 2021:
|  | Utility Operations |  |  |  |  |  |  |  |  |  |
(in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Utility Operations |  | Electric Transmission |  | Non-Utility Energy Infrastructure |  | Corporate and Other |  | Reconciling Eliminations |  | WEC Energy Group Consolidated
Three Months Ended March 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
External revenues |  | $ | 1,942.3 |  |  | $ | 682.1 |  |  | $ | 240.9 |  |  | $ | 2,865.3 |  |  | $ | — |  |  | $ | 42.6 |  |  | $ | 0.2 |  |  | $ | — |  |  | $ | 2,908.1 |
Intersegment revenues |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 116.9 |  |  | — |  |  | (116.9) |  |  | — |
Other operation and maintenance |  | 312.6 |  |  | 113.6 |  |  | 24.6 |  |  | 450.8 |  |  | — |  |  | 10.9 |  |  | (5.7) |  |  | (1.6) |  |  | 454.4 |
Depreciation and amortization |  | 187.1 |  |  | 56.8 |  |  | 10.0 |  |  | 253.9 |  |  | — |  |  | 34.0 |  |  | 6.5 |  |  | (16.3) |  |  | 278.1 |
Equity in earnings of transmission affiliates |  | — |  |  | — |  |  | — |  |  | — |  |  | 41.7 |  |  | — |  |  | — |  |  | — |  |  | 41.7 |
Interest expense |  | 136.3 |  |  | 17.7 |  |  | 3.3 |  |  | 157.3 |  |  | 4.9 |  |  | 17.2 |  |  | 22.6 |  |  | (84.4) |  |  | 117.6 |
Income tax expense (benefit) |  | 95.4 |  |  | 42.1 |  |  | 10.4 |  |  | 147.9 |  |  | 8.9 |  |  | (4.9) |  |  | (24.8) |  |  | — |  |  | 127.1 |
Net income |  | 288.4 |  |  | 113.4 |  |  | 31.5 |  |  | 433.3 |  |  | 27.8 |  |  | 93.3 |  |  | 13.6 |  |  | — |  |  | 568.0 |
Net income attributed to common shareholders |  | 288.1 |  |  | 113.4 |  |  | 31.5 |  |  | 433.0 |  |  | 27.8 |  |  | 91.5 |  |  | 13.6 |  |  | — |  |  | 565.9 |
|  | Utility Operations |  |  |  |  |  |  |  |  |  |
(in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Utility Operations |  | Electric Transmission |  | Non-Utility Energy Infrastructure |  | Corporate and Other |  | Reconciling Eliminations |  | WEC Energy Group Consolidated
Three Months Ended March 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
External revenues |  | $ | 1,731.7 |  |  | $ | 703.4 |  |  | $ | 233.3 |  |  | $ | 2,668.4 |  |  | $ | — |  |  | $ | 22.9 |  |  | $ | 0.1 |  |  | $ | — |  |  | $ | 2,691.4 |
Intersegment revenues |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 114.7 |  |  | — |  |  | (114.7) |  |  | — |
Other operation and maintenance |  | 341.9 |  |  | 109.3 |  |  | 23.2 |  |  | 474.4 |  |  | — |  |  | 8.9 |  |  | (1.8) |  |  | (1.6) |  |  | 479.9 |
Depreciation and amortization |  | 176.2 |  |  | 52.7 |  |  | 9.2 |  |  | 238.1 |  |  | — |  |  | 31.0 |  |  | 6.6 |  |  | (14.3) |  |  | 261.4 |
Equity in earnings of transmission affiliates |  | — |  |  | — |  |  | — |  |  | — |  |  | 42.6 |  |  | — |  |  | — |  |  | — |  |  | 42.6 |
Interest expense |  | 140.1 |  |  | 16.5 |  |  | 1.5 |  |  | 158.1 |  |  | 4.9 |  |  | 18.0 |  |  | 24.2 |  |  | (85.7) |  |  | 119.5 |
Income tax expense (benefit) |  | 48.1 |  |  | 41.4 |  |  | 8.4 |  |  | 97.9 |  |  | 9.8 |  |  | 0.1 |  |  | (32.9) |  |  | — |  |  | 74.9 |
Net income |  | 256.6 |  |  | 112.1 |  |  | 24.7 |  |  | 393.4 |  |  | 28.0 |  |  | 71.3 |  |  | 17.6 |  |  | — |  |  | 510.3 |
Net income attributed to common shareholders |  | 256.3 |  |  | 112.1 |  |  | 24.7 |  |  | 393.1 |  |  | 28.0 |  |  | 71.4 |  |  | 17.6 |  |  | — |  |  | 510.1 |

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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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