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v3.21.1

SEGMENT INFORMATION (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 USD ($) segment | Mar. 31, 2020 USD ($)
Segment information |  |
Number of reportable segments | segment | 6 |
Total operating revenues | $ 2,691.4 | $ 2,108.6
Other operation and maintenance | 479.9 | 455.7
Depreciation and amortization | 261.4 | 239.1
Equity in earnings of transmission affiliates | 42.6 | 39.8
Interest expense | 119.5 | 129.4
Income tax expense (benefit) | 74.9 | 90.0
Net income (loss) | 510.3 | 452.6
Net income attributed to common shareholders | 510.1 | 452.5
Reconciling Eliminations |  |
Segment information |  |
Other operation and maintenance | (1.6) | (4.5)
Depreciation and amortization | (14.3) | (12.2)
Equity in earnings of transmission affiliates | 0.0 | 0.0
Interest expense | (85.7) | (87.1)
Income tax expense (benefit) | 0.0 | 0.0
Net income (loss) | 0.0 | 0.0
Net income attributed to common shareholders | 0.0 | 0.0
Wisconsin |  |
Segment information |  |
Total operating revenues | 1,731.7 | 1,498.9
Illinois |  |
Segment information |  |
Total operating revenues | 703.4 | 447.6
Other States |  |
Segment information |  |
Total operating revenues | 233.3 | 146.4
Electric Transmission |  |
Segment information |  |
Other operation and maintenance | 0.0 | 0.0
Depreciation and amortization | 0.0 | 0.0
Equity in earnings of transmission affiliates | 42.6 | 39.8
Interest expense | 4.9 | 4.8
Income tax expense (benefit) | 9.8 | 9.9
Net income (loss) | 28.0 | 25.0
Net income attributed to common shareholders | $ 28.0 | 25.0
Non-Utility Energy Infrastructure |  |
Segment information |  |
Natural gas storage needs provided to Wisconsin utilities | 33.00% |
Total operating revenues | $ 137.6 | 129.6
Other operation and maintenance | 8.9 | 5.2
Depreciation and amortization | 31.0 | 24.5
Equity in earnings of transmission affiliates | 0.0 | 0.0
Interest expense | 18.0 | 15.3
Income tax expense (benefit) | 0.1 | 11.2
Net income (loss) | 71.3 | 65.3
Net income attributed to common shareholders | 71.4 | 65.5
Corporate and Other |  |
Segment information |  |
Total operating revenues | 0.1 | 0.5
Other operation and maintenance | (1.8) | (1.6)
Depreciation and amortization | 6.6 | 6.1
Equity in earnings of transmission affiliates | 0.0 | 0.0
Interest expense | 24.2 | 35.1
Income tax expense (benefit) | (32.9) | (30.7)
Net income (loss) | 17.6 | (18.3)
Net income attributed to common shareholders | $ 17.6 | (18.3)
Bishop Hill III | Non-Utility Energy Infrastructure |  |
Segment information |  |
WEC's ownership interest | 90.00% |
Coyote Ridge | Non-Utility Energy Infrastructure |  |
Segment information |  |
WEC's ownership interest | 80.00% |
Upstream | Non-Utility Energy Infrastructure |  |
Segment information |  |
WEC's ownership interest | 90.00% |
Blooming Grove | Non-Utility Energy Infrastructure |  |
Segment information |  |
WEC's ownership interest | 90.00% |
Tatanka Ridge | Non-Utility Energy Infrastructure |  |
Segment information |  |
WEC's ownership interest | 85.00% |
JayhawkWindLLC | Non-Utility Energy Infrastructure |  |
Segment information |  |
WEC's ownership interest | 90.00% |
ATC | Electric Transmission |  |
Segment information |  |
Equity method investment, ownership interest (as a percent) | 60.00% |
ATC Holdco |  |
Segment information |  |
Equity method investment, ownership interest (as a percent) | 75.00% |
Equity in earnings of transmission affiliates | $ 0.9 | 0.2
ATC Holdco | Electric Transmission |  |
Segment information |  |
Equity method investment, ownership interest (as a percent) | 75.00% |
Utility Operations |  |
Segment information |  |
Other operation and maintenance | $ 474.4 | 456.6
Depreciation and amortization | 238.1 | 220.7
Equity in earnings of transmission affiliates | 0.0 | 0.0
Interest expense | 158.1 | 161.3
Income tax expense (benefit) | 97.9 | 99.6
Net income (loss) | 393.4 | 380.6
Net income attributed to common shareholders | 393.1 | 380.3
Utility Operations | Wisconsin |  |
Segment information |  |
Other operation and maintenance | 341.9 | 330.8
Depreciation and amortization | 176.2 | 165.4
Equity in earnings of transmission affiliates | 0.0 | 0.0
Interest expense | 140.1 | 143.1
Income tax expense (benefit) | 48.1 | 51.2
Net income (loss) | 256.6 | 247.0
Net income attributed to common shareholders | 256.3 | 246.7
Utility Operations | Illinois |  |
Segment information |  |
Other operation and maintenance | 109.3 | 104.1
Depreciation and amortization | 52.7 | 47.5
Equity in earnings of transmission affiliates | 0.0 | 0.0
Interest expense | 16.5 | 16.0
Income tax expense (benefit) | 41.4 | 39.5
Net income (loss) | 112.1 | 107.3
Net income attributed to common shareholders | 112.1 | 107.3
Utility Operations | Other States |  |
Segment information |  |
Other operation and maintenance | 23.2 | 21.7
Depreciation and amortization | 9.2 | 7.8
Equity in earnings of transmission affiliates | 0.0 | 0.0
Interest expense | 1.5 | 2.2
Income tax expense (benefit) | 8.4 | 8.9
Net income (loss) | 24.7 | 26.3
Net income attributed to common shareholders | 24.7 | 26.3
External Revenues |  |
Segment information |  |
Total operating revenues | 2,691.4 | 2,108.6
External Revenues | Reconciling Eliminations |  |
Segment information |  |
Total operating revenues | 0.0 | 0.0
External Revenues | Electric Transmission |  |
Segment information |  |
Total operating revenues | 0.0 | 0.0
External Revenues | Non-Utility Energy Infrastructure |  |
Segment information |  |
Total operating revenues | 22.9 | 15.2
External Revenues | Corporate and Other |  |
Segment information |  |
Total operating revenues | 0.1 | 0.5
External Revenues | Utility Operations |  |
Segment information |  |
Total operating revenues | 2,668.4 | 2,092.9
External Revenues | Utility Operations | Wisconsin |  |
Segment information |  |
Total operating revenues | 1,731.7 | 1,498.9
External Revenues | Utility Operations | Illinois |  |
Segment information |  |
Total operating revenues | 703.4 | 447.6
External Revenues | Utility Operations | Other States |  |
Segment information |  |
Total operating revenues | 233.3 | 146.4
Intersegment Revenues |  |
Segment information |  |
Total operating revenues | 0.0 | 0.0
Intersegment Revenues | Reconciling Eliminations |  |
Segment information |  |
Total operating revenues | (114.7) | (114.4)
Intersegment Revenues | Electric Transmission |  |
Segment information |  |
Total operating revenues | 0.0 | 0.0
Intersegment Revenues | Non-Utility Energy Infrastructure |  |
Segment information |  |
Total operating revenues | 114.7 | 114.4
Intersegment Revenues | Corporate and Other |  |
Segment information |  |
Total operating revenues | 0.0 | 0.0
Intersegment Revenues | Utility Operations |  |
Segment information |  |
Total operating revenues | 0.0 | 0.0
Intersegment Revenues | Utility Operations | Wisconsin |  |
Segment information |  |
Total operating revenues | 0.0 | 0.0
Intersegment Revenues | Utility Operations | Illinois |  |
Segment information |  |
Total operating revenues | 0.0 | 0.0
Intersegment Revenues | Utility Operations | Other States |  |
Segment information |  |
Total operating revenues | $ 0.0 | $ 0.0

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