XML 165 R151.htm IDEA: XBRL DOCUMENT
v3.20.4

Segment Information (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2020 USD ($) | Oct. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) segment | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments | segment |  |  |  |  |  |  |  |  |  |  | 6 |  |
Operating revenues |  |  | $ 1,933.4 | $ 1,651.0 | $ 1,548.7 | $ 2,108.6 | $ 1,947.5 | $ 1,608.0 | $ 1,590.2 | $ 2,377.4 | $ 7,241.7 | $ 7,523.1 | $ 7,679.5
Other operation and maintenance |  |  |  |  |  |  |  |  |  |  | 2,032.2 | 2,184.8 | 2,270.5
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 975.9 | 926.3 | 845.8
Equity in earnings of transmission affiliates |  |  |  |  |  |  |  |  |  |  | 175.8 | 127.6 | 136.7
Interest expense |  |  |  |  |  |  |  |  |  |  | 493.7 | 501.5 | 445.1
Loss on debt extinguishment | $ 10.5 | $ 27.9 |  |  |  |  |  |  |  |  | 38.4 | 0.0 | 0.0
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  | 227.9 | 125.0 | 169.8
Net income (loss) |  |  |  |  |  |  |  |  |  |  | 1,201.4 | 1,134.7 | 1,060.5
Net income attributed to common shareholders |  |  | 239.0 | $ 266.8 | $ 241.6 | $ 452.5 | 243.9 | $ 234.3 | $ 235.7 | $ 420.1 | 1,199.9 | 1,134.0 | 1,059.3
Capital expenditures and asset acquisitions |  |  |  |  |  |  |  |  |  |  | 2,874.3 | 2,529.0 | 2,417.1
Total assets | 37,028.1 |  | 37,028.1 |  |  |  | 34,951.8 |  |  |  | 37,028.1 | 34,951.8 | 33,475.8
Reconciling eliminations |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Other operation and maintenance |  |  |  |  |  |  |  |  |  |  | (9.2) | 0.2 | (393.3)
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | (52.8) | (15.8) | 0.0
Equity in earnings of transmission affiliates |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Interest expense |  |  |  |  |  |  |  |  |  |  | (345.5) | (354.1) | (5.3)
Loss on debt extinguishment |  |  |  |  |  |  |  |  |  |  | 0.0 |  |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Net income (loss) |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Net income attributed to common shareholders |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Capital expenditures and asset acquisitions |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Total assets | (3,361.2) |  | (3,361.2) |  |  |  | (3,344.5) |  |  |  | (3,361.2) | (3,344.5) | (3,414.5)
WE | Reconciling eliminations |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets | 1,824.5 |  | 1,824.5 |  |  |  | 1,896.7 |  |  |  | 1,824.5 | 1,896.7 | 1,968.5
Wisconsin |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 5,473.5 | 5,647.1 | 5,794.7
Illinois |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 1,321.9 | 1,357.1 | 1,400.0
Other States |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 384.1 | 426.0 | 438.2
Electric transmission |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Other operation and maintenance |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Equity in earnings of transmission affiliates |  |  |  |  |  |  |  |  |  |  | 175.8 | 127.6 | 136.7
Interest expense |  |  |  |  |  |  |  |  |  |  | 19.4 | 13.1 | 0.3
Loss on debt extinguishment |  |  |  |  |  |  |  |  |  |  | 0.0 |  |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  | 43.7 | 27.1 | 53.7
Net income (loss) |  |  |  |  |  |  |  |  |  |  | 112.6 | 87.4 | 82.8
Net income attributed to common shareholders |  |  |  |  |  |  |  |  |  |  | 112.6 | 87.4 | 82.8
Capital expenditures and asset acquisitions |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Total assets | 1,764.7 |  | 1,764.7 |  |  |  | 1,723.1 |  |  |  | $ 1,764.7 | 1,723.1 | 1,665.3
Non-Utility Energy Infrastructure |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Natural gas storage needs provided to Wisconsin utilities |  |  |  |  |  |  |  |  |  |  | 33.00% |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | $ 508.5 | 495.9 | 468.4
Other operation and maintenance |  |  |  |  |  |  |  |  |  |  | 24.9 | 19.7 | 12.6
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 98.9 | 92.0 | 75.7
Equity in earnings of transmission affiliates |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Interest expense |  |  |  |  |  |  |  |  |  |  | 60.8 | 62.1 | 63.7
Loss on debt extinguishment |  |  |  |  |  |  |  |  |  |  | 0.0 |  |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  | 44.7 | 59.9 | 73.9
Net income (loss) |  |  |  |  |  |  |  |  |  |  | 261.1 | 245.5 | 228.4
Net income attributed to common shareholders |  |  |  |  |  |  |  |  |  |  | 260.8 | 246.0 | 228.4
Capital expenditures and asset acquisitions |  |  |  |  |  |  |  |  |  |  | 661.8 | 389.9 | 260.6
Total assets | 4,455.2 |  | 4,455.2 |  |  |  | 3,654.1 |  |  |  | 4,455.2 | 3,654.1 | 3,227.2
Corporate and other |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 2.2 | 4.4 | 8.7
Other operation and maintenance |  |  |  |  |  |  |  |  |  |  | 17.4 | 14.0 | 1.8
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 25.1 | 24.3 | 29.1
Equity in earnings of transmission affiliates |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Interest expense |  |  |  |  |  |  |  |  |  |  | 124.0 | 140.9 | 125.8
Loss on debt extinguishment |  |  |  |  |  |  |  |  |  |  | 38.4 |  |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  | (72.4) | (71.0) | (72.2)
Net income (loss) |  |  |  |  |  |  |  |  |  |  | (106.4) | (62.8) | (60.1)
Net income attributed to common shareholders |  |  |  |  |  |  |  |  |  |  | (106.4) | (62.8) | (60.1)
Capital expenditures and asset acquisitions |  |  |  |  |  |  |  |  |  |  | 33.1 | 26.5 | 39.7
Total assets | $ 762.2 |  | $ 762.2 |  |  |  | 814.0 |  |  |  | $ 762.2 | 814.0 | 959.6
Bishop Hill III | Non-Utility Energy Infrastructure |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
WEC's ownership interest | 90.00% |  | 90.00% |  |  |  |  |  |  |  | 90.00% |  |
Coyote Ridge | Non-Utility Energy Infrastructure |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
WEC's ownership interest | 80.00% |  | 80.00% |  |  |  |  |  |  |  | 80.00% |  |
Upstream | Non-Utility Energy Infrastructure |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
WEC's ownership interest | 90.00% |  | 90.00% |  |  |  |  |  |  |  | 90.00% |  |
Blooming Grove | Non-Utility Energy Infrastructure |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
WEC's ownership interest | 90.00% |  | 90.00% |  |  |  |  |  |  |  | 90.00% |  |
Tatanka Ridge | Non-Utility Energy Infrastructure |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
WEC's ownership interest | 85.00% |  | 85.00% |  |  |  |  |  |  |  | 85.00% |  |
ATC |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest (as a percent) | 60.00% |  | 60.00% |  |  |  |  |  |  |  | 60.00% |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | $ 758.1 | 744.4 | 690.5
Equity in earnings of transmission affiliates |  |  |  |  |  |  |  |  |  |  | 174.3 | 132.8 | 139.6
Total assets | $ 5,493.3 |  | $ 5,493.3 |  |  |  | 5,328.9 |  |  |  | $ 5,493.3 | 5,328.9 |
ATC | Electric transmission |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest (as a percent) | 60.00% |  | 60.00% |  |  |  |  |  |  |  | 60.00% |  |
ATC Holdco |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest (as a percent) | 75.00% |  | 75.00% |  |  |  |  |  |  |  | 75.00% |  |
Equity in earnings of transmission affiliates |  |  |  |  |  |  |  |  |  |  | $ 1.5 | (5.2) | (2.9)
ATC Holdco | Electric transmission |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership interest (as a percent) | 75.00% |  | 75.00% |  |  |  |  |  |  |  | 75.00% |  |
Public Utilities |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Other operation and maintenance |  |  |  |  |  |  |  |  |  |  | $ 1,999.1 | 2,150.9 | 2,649.4
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 904.7 | 825.8 | 741.0
Equity in earnings of transmission affiliates |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Interest expense |  |  |  |  |  |  |  |  |  |  | 635.0 | 639.5 | 260.6
Loss on debt extinguishment |  |  |  |  |  |  |  |  |  |  | 0.0 |  |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  | 211.9 | 109.0 | 114.4
Net income (loss) |  |  |  |  |  |  |  |  |  |  | 934.1 | 864.6 | 809.4
Net income attributed to common shareholders |  |  |  |  |  |  |  |  |  |  | 932.9 | 863.4 | 808.2
Capital expenditures and asset acquisitions |  |  |  |  |  |  |  |  |  |  | 2,179.4 | 2,112.6 | 2,116.8
Total assets | $ 33,407.2 |  | $ 33,407.2 |  |  |  | 32,105.1 |  |  |  | 33,407.2 | 32,105.1 | 31,038.2
Public Utilities | Wisconsin |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Other operation and maintenance |  |  |  |  |  |  |  |  |  |  | 1,476.7 | 1,591.3 | 2,076.1
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 674.5 | 617.0 | 546.6
Equity in earnings of transmission affiliates |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Interest expense |  |  |  |  |  |  |  |  |  |  | 561.3 | 572.0 | 200.7
Loss on debt extinguishment |  |  |  |  |  |  |  |  |  |  | 0.0 |  |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  | 132.7 | 35.2 | 46.7
Net income (loss) |  |  |  |  |  |  |  |  |  |  | 691.6 | 651.1 | 618.2
Net income attributed to common shareholders |  |  |  |  |  |  |  |  |  |  | 690.4 | 649.9 | 617.0
Capital expenditures and asset acquisitions |  |  |  |  |  |  |  |  |  |  | 1,382.4 | 1,378.6 | 1,466.1
Total assets | 24,599.2 |  | 24,599.2 |  |  |  | 23,934.8 |  |  |  | 24,599.2 | 23,934.8 | 23,407.0
Public Utilities | Illinois |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Other operation and maintenance |  |  |  |  |  |  |  |  |  |  | 435.4 | 461.1 | 472.3
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 196.7 | 181.3 | 170.3
Equity in earnings of transmission affiliates |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Interest expense |  |  |  |  |  |  |  |  |  |  | 63.5 | 59.0 | 51.2
Loss on debt extinguishment |  |  |  |  |  |  |  |  |  |  | 0.0 |  |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  | 66.1 | 60.2 | 51.8
Net income (loss) |  |  |  |  |  |  |  |  |  |  | 203.5 | 170.3 | 147.1
Net income attributed to common shareholders |  |  |  |  |  |  |  |  |  |  | 203.5 | 170.3 | 147.1
Capital expenditures and asset acquisitions |  |  |  |  |  |  |  |  |  |  | 652.7 | 624.9 | 547.1
Total assets | 7,471.8 |  | 7,471.8 |  |  |  | 6,932.5 |  |  |  | 7,471.8 | 6,932.5 | 6,483.3
Public Utilities | Other States |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Other operation and maintenance |  |  |  |  |  |  |  |  |  |  | 87.0 | 98.5 | 101.0
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 33.5 | 27.5 | 24.1
Equity in earnings of transmission affiliates |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Interest expense |  |  |  |  |  |  |  |  |  |  | 10.2 | 8.5 | 8.7
Loss on debt extinguishment |  |  |  |  |  |  |  |  |  |  | 0.0 |  |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  | 13.1 | 13.6 | 15.9
Net income (loss) |  |  |  |  |  |  |  |  |  |  | 39.0 | 43.2 | 44.1
Net income attributed to common shareholders |  |  |  |  |  |  |  |  |  |  | 39.0 | 43.2 | 44.1
Capital expenditures and asset acquisitions |  |  |  |  |  |  |  |  |  |  | 144.3 | 109.1 | 103.6
Total assets | $ 1,336.2 |  | $ 1,336.2 |  |  |  | $ 1,237.8 |  |  |  | 1,336.2 | 1,237.8 | 1,147.9
External Revenues | Reconciling eliminations |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
External Revenues | Electric transmission |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
External Revenues | Non-Utility Energy Infrastructure |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 60.0 | 88.5 | 37.9
External Revenues | Corporate and other |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 2.2 | 4.4 | 8.7
External Revenues | Public Utilities |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 7,179.5 | 7,430.2 | 7,632.9
External Revenues | Public Utilities | Wisconsin |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 5,473.5 | 5,647.1 | 5,794.7
External Revenues | Public Utilities | Illinois |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 1,321.9 | 1,357.1 | 1,400.0
External Revenues | Public Utilities | Other States |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 384.1 | 426.0 | 438.2
Intersegment Transactions |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Intersegment Transactions | Reconciling eliminations |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | (448.5) | (407.4) | (430.5)
Intersegment Transactions | Electric transmission |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Intersegment Transactions | Non-Utility Energy Infrastructure |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 448.5 | 407.4 | 430.5
Intersegment Transactions | Corporate and other |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Intersegment Transactions | Public Utilities |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Intersegment Transactions | Public Utilities | Wisconsin |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Intersegment Transactions | Public Utilities | Illinois |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Intersegment Transactions | Public Utilities | Other States |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  |  |  | $ 0.0 | $ 0.0 | $ 0.0

X
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