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v3.22.4

Segment Information (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) segment | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Segment information |  |  |
Number of reportable segments | segment | 6 |  |
Operating revenues | $ 9,597.4 | $ 8,316.0 | $ 7,241.7
Other operation and maintenance | 1,938.0 | 2,005.5 | 2,032.2
Depreciation and amortization | 1,122.6 | 1,074.3 | 975.9
Equity in earnings of transmission affiliates | 194.7 | 158.1 | 175.8
Interest expense | 515.1 | 471.1 | 493.7
Loss on debt extinguishment | 0.0 | 36.3 | 38.4
Income tax expense (benefit) | 322.9 | 200.3 | 227.9
Net income (loss) | 1,409.7 | 1,298.5 | 1,201.4
Net income (loss) attributed to common shareholders | 1,408.1 | 1,300.3 | 1,199.9
Capital expenditures and asset acquisitions | 2,696.9 | 2,372.7 | 2,874.3
Total assets | 41,872.1 | 38,988.5 | 37,028.1
Reconciling eliminations |  |  |
Segment information |  |  |
Other operation and maintenance | (9.1) | (9.2) | (9.2)
Depreciation and amortization | (68.1) | (60.0) | (52.8)
Equity in earnings of transmission affiliates | 0.0 | 0.0 | 0.0
Interest expense | (336.2) | (340.5) | (345.5)
Loss on debt extinguishment |  | 0.0 | 0.0
Income tax expense (benefit) | 0.0 | 0.0 | 0.0
Net income (loss) | 0.0 | 0.0 | 0.0
Net income (loss) attributed to common shareholders | 0.0 | 0.0 | 0.0
Capital expenditures and asset acquisitions | 0.0 | 0.0 | 0.0
Total assets | (3,256.5) | (3,264.6) | (3,361.2)
Reconciling eliminations | WE |  |  |
Segment information |  |  |
Total assets | 1,632.9 | 1,729.9 | 1,824.5
Wisconsin |  |  |
Segment information |  |  |
Operating revenues | 6,960.5 | 6,037.0 | 5,473.5
Illinois |  |  |
Segment information |  |  |
Operating revenues | 1,890.9 | 1,672.8 | 1,321.9
Other States |  |  |
Segment information |  |  |
Operating revenues | 618.5 | 519.0 | 384.1
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 | 194.7 | 158.1 | 175.8
Interest expense | 19.4 | 19.4 | 19.4
Loss on debt extinguishment |  | 0.0 | 0.0
Income tax expense (benefit) | 45.8 | 32.3 | 43.7
Net income (loss) | 129.5 | 106.3 | 112.6
Net income (loss) attributed to common shareholders | 129.5 | 106.3 | 112.6
Capital expenditures and asset acquisitions | 0.0 | 0.0 | 0.0
Total assets | $ 1,909.4 | 1,792.7 | 1,764.7
Non-Utility Energy Infrastructure |  |  |
Segment information |  |  |
Natural gas storage needs provided to Wisconsin utilities | 33.00% |  |
Operating revenues | $ 590.0 | 539.5 | 508.5
Other operation and maintenance | 51.0 | 43.1 | 24.9
Depreciation and amortization | 139.2 | 125.3 | 98.9
Equity in earnings of transmission affiliates | 0.0 | 0.0 | 0.0
Interest expense | 68.9 | 71.0 | 60.8
Loss on debt extinguishment |  | 0.0 | 0.0
Income tax expense (benefit) | (20.9) | 3.1 | 44.7
Net income (loss) | 324.8 | 276.2 | 261.1
Net income (loss) attributed to common shareholders | 324.4 | 279.2 | 260.8
Capital expenditures and asset acquisitions | 483.8 | 335.3 | 661.8
Total assets | 5,320.6 | 4,627.7 | 4,455.2
Corporate and other |  |  |
Segment information |  |  |
Operating revenues | 0.5 | 0.5 | 2.2
Other operation and maintenance | (12.9) | (7.5) | 17.4
Depreciation and amortization | 25.0 | 25.9 | 25.1
Equity in earnings of transmission affiliates | 0.0 | 0.0 | 0.0
Interest expense | 119.4 | 92.8 | 124.0
Loss on debt extinguishment |  | 36.3 | 38.4
Income tax expense (benefit) | (45.7) | (45.8) | (72.4)
Net income (loss) | (70.8) | (50.5) | (106.4)
Net income (loss) attributed to common shareholders | (70.8) | (50.5) | (106.4)
Capital expenditures and asset acquisitions | 16.3 | 18.1 | 33.1
Total assets | 774.0 | 785.3 | 762.2
Public utilities |  |  |
Segment information |  |  |
Other operation and maintenance | 1,909.0 | 1,979.1 | 1,999.1
Depreciation and amortization | 1,026.5 | 983.1 | 904.7
Equity in earnings of transmission affiliates | 0.0 | 0.0 | 0.0
Interest expense | 643.6 | 628.4 | 635.0
Loss on debt extinguishment |  | 0.0 | 0.0
Income tax expense (benefit) | 343.7 | 210.7 | 211.9
Net income (loss) | 1,026.2 | 966.5 | 934.1
Net income (loss) attributed to common shareholders | 1,025.0 | 965.3 | 932.9
Capital expenditures and asset acquisitions | 2,196.8 | 2,019.3 | 2,179.4
Total assets | 37,124.6 | 35,047.4 | 33,407.2
Public utilities | Wisconsin |  |  |
Segment information |  |  |
Other operation and maintenance | 1,351.3 | 1,455.2 | 1,476.7
Depreciation and amortization | 754.7 | 726.9 | 674.5
Equity in earnings of transmission affiliates | 0.0 | 0.0 | 0.0
Interest expense | 555.9 | 555.6 | 561.3
Loss on debt extinguishment |  | 0.0 | 0.0
Income tax expense (benefit) | 247.5 | 119.9 | 132.7
Net income (loss) | 759.6 | 707.7 | 691.6
Net income (loss) attributed to common shareholders | 758.4 | 706.5 | 690.4
Capital expenditures and asset acquisitions | 1,610.8 | 1,389.7 | 1,382.4
Total assets | 27,384.0 | 25,687.9 | 24,599.2
Public utilities | Illinois |  |  |
Segment information |  |  |
Other operation and maintenance | 459.2 | 433.5 | 435.4
Depreciation and amortization | 230.9 | 218.1 | 196.7
Equity in earnings of transmission affiliates | 0.0 | 0.0 | 0.0
Interest expense | 73.8 | 66.6 | 63.5
Loss on debt extinguishment |  | 0.0 | 0.0
Income tax expense (benefit) | 83.1 | 79.3 | 66.1
Net income (loss) | 226.9 | 223.0 | 203.5
Net income (loss) attributed to common shareholders | 226.9 | 223.0 | 203.5
Capital expenditures and asset acquisitions | 484.9 | 533.7 | 652.7
Total assets | 8,101.0 | 7,853.4 | 7,471.8
Public utilities | Other States |  |  |
Segment information |  |  |
Other operation and maintenance | 98.5 | 90.4 | 87.0
Depreciation and amortization | 40.9 | 38.1 | 33.5
Equity in earnings of transmission affiliates | 0.0 | 0.0 | 0.0
Interest expense | 13.9 | 6.2 | 10.2
Loss on debt extinguishment |  | 0.0 | 0.0
Income tax expense (benefit) | 13.1 | 11.5 | 13.1
Net income (loss) | 39.7 | 35.8 | 39.0
Net income (loss) attributed to common shareholders | 39.7 | 35.8 | 39.0
Capital expenditures and asset acquisitions | 101.1 | 95.9 | 144.3
Total assets | 1,639.6 | 1,506.1 | 1,336.2
External revenues |  |  |
Segment information |  |  |
Operating revenues | 9,597.4 | 8,316.0 | 7,241.7
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 | 127.0 | 86.7 | 60.0
External revenues | Corporate and other |  |  |
Segment information |  |  |
Operating revenues | 0.5 | 0.5 | 2.2
External revenues | Public utilities |  |  |
Segment information |  |  |
Operating revenues | 9,469.9 | 8,228.8 | 7,179.5
External revenues | Public utilities | Wisconsin |  |  |
Segment information |  |  |
Operating revenues | 6,960.5 | 6,037.0 | 5,473.5
External revenues | Public utilities | Illinois |  |  |
Segment information |  |  |
Operating revenues | 1,890.9 | 1,672.8 | 1,321.9
External revenues | Public utilities | Other States |  |  |
Segment information |  |  |
Operating revenues | 618.5 | 519.0 | 384.1
Intersegment transactions |  |  |
Segment information |  |  |
Operating revenues | 0.0 | 0.0 | 0.0
Intersegment transactions | Reconciling eliminations |  |  |
Segment information |  |  |
Operating revenues | (463.0) | (452.8) | (448.5)
Intersegment transactions | Electric transmission |  |  |
Segment information |  |  |
Operating revenues | 0.0 | 0.0 | 0.0
Intersegment transactions | Non-Utility Energy Infrastructure |  |  |
Segment information |  |  |
Operating revenues | 463.0 | 452.8 | 448.5
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
ATC |  |  |
Segment information |  |  |
Equity method investment, ownership interest (as a percent) | 60.00% |  |
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% |  |
ATC Holdco | Electric transmission |  |  |
Segment information |  |  |
Equity method investment, ownership interest (as a percent) | 75.00% |  |

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