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v3.23.2

Segments Of Business (Tables) | 6 Months Ended
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Jun. 30, 2023
Segment Reporting Information [Line Items] |
Schedule Of Segments Of Business | Certain financial information relating to Alliant Energy’s, IPL’s and WPL’s business segments is as follows. Intersegment revenues were not material to their respective operations.
Alliant Energy |  |  |  |  |  |  |  |  | ATC Holdings, |  | Alliant
| Utility |  | Non-Utility, |  | Energy
| Electric |  | Gas |  | Other |  | Total |  | Parent and Other |  | Consolidated
| (in millions)
Three Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |  |  |
Revenues | $799 |  | $77 |  | $13 |  | $889 |  | $23 |  | $912
Operating income | 200 |  | 2 |  | 7 |  | 209 |  | 8 |  | 217
Net income (loss) attributable to Alliant Energy common shareowners |  |  |  |  |  |  | 161 |  | (1) |  | 160
Three Months Ended June 30, 2022 |  |  |  |  |  |  |  |  |  |  |
Revenues | $812 |  | $94 |  | $13 |  | $919 |  | $24 |  | $943
Operating income | 195 |  | 8 |  | 1 |  | 204 |  | 8 |  | 212
Net income attributable to Alliant Energy common shareowners |  |  |  |  |  |  | 150 |  | 9 |  | 159
Alliant Energy |  |  |  |  |  |  |  |  | ATC Holdings, |  | Alliant
| Utility |  | Non-Utility, |  | Energy
| Electric |  | Gas |  | Other |  | Total |  | Parent and Other |  | Consolidated
| (in millions)
Six Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |  |  |
Revenues | $1,567 |  | $353 |  | $25 |  | $1,945 |  | $45 |  | $1,990
Operating income | 363 |  | 52 |  | 11 |  | 426 |  | 13 |  | 439
Net income attributable to Alliant Energy common shareowners |  |  |  |  |  |  | 321 |  | 2 |  | 323
Six Months Ended June 30, 2022 |  |  |  |  |  |  |  |  |  |  |
Revenues | $1,586 |  | $356 |  | $23 |  | $1,965 |  | $47 |  | $2,012
Operating income | 376 |  | 65 |  | 4 |  | 445 |  | 15 |  | 460
Net income attributable to Alliant Energy common shareowners |  |  |  |  |  |  | 329 |  | 22 |  | 351
IPL | Electric |  | Gas |  | Other |  | Total
| (in millions)
Three Months Ended June 30, 2023 |  |  |  |  |  |  |
Revenues | $431 |  | $44 |  | $12 |  | $487
Operating income | 105 |  | — |  | 5 |  | 110
Net income |  |  |  |  |  |  | 89
Three Months Ended June 30, 2022 |  |  |  |  |  |  |
Revenues | $442 |  | $52 |  | $12 |  | $506
Operating income | 104 |  | 4 |  | 1 |  | 109
Net income |  |  |  |  |  |  | 87
Six Months Ended June 30, 2023 |  |  |  |  |  |  |
Revenues | $819 |  | $194 |  | $24 |  | $1,037
Operating income | 171 |  | 27 |  | 8 |  | 206
Net income |  |  |  |  |  |  | 161
Six Months Ended June 30, 2022 |  |  |  |  |  |  |
Revenues | $843 |  | $191 |  | $22 |  | $1,056
Operating income | 179 |  | 36 |  | 3 |  | 218
Net income |  |  |  |  |  |  | 173
WPL | Electric |  | Gas |  | Other |  | Total
| (in millions)
Three Months Ended June 30, 2023 |  |  |  |  |  |  |
Revenues | $368 |  | $33 |  | $1 |  | $402
Operating income | 95 |  | 2 |  | 2 |  | 99
Net income |  |  |  |  |  |  | 72
Three Months Ended June 30, 2022 |  |  |  |  |  |  |
Revenues | $370 |  | $42 |  | $1 |  | $413
Operating income | 91 |  | 4 |  | — |  | 95
Net income |  |  |  |  |  |  | 63
Six Months Ended June 30, 2023 |  |  |  |  |  |  |
Revenues | $748 |  | $159 |  | $1 |  | $908
Operating income | 192 |  | 25 |  | 3 |  | 220
Net income |  |  |  |  |  |  | 160
Six Months Ended June 30, 2022 |  |  |  |  |  |  |
Revenues | $743 |  | $165 |  | $1 |  | $909
Operating income | 197 |  | 29 |  | 1 |  | 227
Net income |  |  |  |  |  |  | 156
IPL [Member] |
Segment Reporting Information [Line Items] |
Schedule Of Segments Of Business | Certain financial information relating to Alliant Energy’s, IPL’s and WPL’s business segments is as follows. Intersegment revenues were not material to their respective operations.
Alliant Energy |  |  |  |  |  |  |  |  | ATC Holdings, |  | Alliant
| Utility |  | Non-Utility, |  | Energy
| Electric |  | Gas |  | Other |  | Total |  | Parent and Other |  | Consolidated
| (in millions)
Three Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |  |  |
Revenues | $799 |  | $77 |  | $13 |  | $889 |  | $23 |  | $912
Operating income | 200 |  | 2 |  | 7 |  | 209 |  | 8 |  | 217
Net income (loss) attributable to Alliant Energy common shareowners |  |  |  |  |  |  | 161 |  | (1) |  | 160
Three Months Ended June 30, 2022 |  |  |  |  |  |  |  |  |  |  |
Revenues | $812 |  | $94 |  | $13 |  | $919 |  | $24 |  | $943
Operating income | 195 |  | 8 |  | 1 |  | 204 |  | 8 |  | 212
Net income attributable to Alliant Energy common shareowners |  |  |  |  |  |  | 150 |  | 9 |  | 159
Alliant Energy |  |  |  |  |  |  |  |  | ATC Holdings, |  | Alliant
| Utility |  | Non-Utility, |  | Energy
| Electric |  | Gas |  | Other |  | Total |  | Parent and Other |  | Consolidated
| (in millions)
Six Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |  |  |
Revenues | $1,567 |  | $353 |  | $25 |  | $1,945 |  | $45 |  | $1,990
Operating income | 363 |  | 52 |  | 11 |  | 426 |  | 13 |  | 439
Net income attributable to Alliant Energy common shareowners |  |  |  |  |  |  | 321 |  | 2 |  | 323
Six Months Ended June 30, 2022 |  |  |  |  |  |  |  |  |  |  |
Revenues | $1,586 |  | $356 |  | $23 |  | $1,965 |  | $47 |  | $2,012
Operating income | 376 |  | 65 |  | 4 |  | 445 |  | 15 |  | 460
Net income attributable to Alliant Energy common shareowners |  |  |  |  |  |  | 329 |  | 22 |  | 351
IPL | Electric |  | Gas |  | Other |  | Total
| (in millions)
Three Months Ended June 30, 2023 |  |  |  |  |  |  |
Revenues | $431 |  | $44 |  | $12 |  | $487
Operating income | 105 |  | — |  | 5 |  | 110
Net income |  |  |  |  |  |  | 89
Three Months Ended June 30, 2022 |  |  |  |  |  |  |
Revenues | $442 |  | $52 |  | $12 |  | $506
Operating income | 104 |  | 4 |  | 1 |  | 109
Net income |  |  |  |  |  |  | 87
Six Months Ended June 30, 2023 |  |  |  |  |  |  |
Revenues | $819 |  | $194 |  | $24 |  | $1,037
Operating income | 171 |  | 27 |  | 8 |  | 206
Net income |  |  |  |  |  |  | 161
Six Months Ended June 30, 2022 |  |  |  |  |  |  |
Revenues | $843 |  | $191 |  | $22 |  | $1,056
Operating income | 179 |  | 36 |  | 3 |  | 218
Net income |  |  |  |  |  |  | 173
WPL | Electric |  | Gas |  | Other |  | Total
| (in millions)
Three Months Ended June 30, 2023 |  |  |  |  |  |  |
Revenues | $368 |  | $33 |  | $1 |  | $402
Operating income | 95 |  | 2 |  | 2 |  | 99
Net income |  |  |  |  |  |  | 72
Three Months Ended June 30, 2022 |  |  |  |  |  |  |
Revenues | $370 |  | $42 |  | $1 |  | $413
Operating income | 91 |  | 4 |  | — |  | 95
Net income |  |  |  |  |  |  | 63
Six Months Ended June 30, 2023 |  |  |  |  |  |  |
Revenues | $748 |  | $159 |  | $1 |  | $908
Operating income | 192 |  | 25 |  | 3 |  | 220
Net income |  |  |  |  |  |  | 160
Six Months Ended June 30, 2022 |  |  |  |  |  |  |
Revenues | $743 |  | $165 |  | $1 |  | $909
Operating income | 197 |  | 29 |  | 1 |  | 227
Net income |  |  |  |  |  |  | 156
WPL [Member] |
Segment Reporting Information [Line Items] |
Schedule Of Segments Of Business | Certain financial information relating to Alliant Energy’s, IPL’s and WPL’s business segments is as follows. Intersegment revenues were not material to their respective operations.
Alliant Energy |  |  |  |  |  |  |  |  | ATC Holdings, |  | Alliant
| Utility |  | Non-Utility, |  | Energy
| Electric |  | Gas |  | Other |  | Total |  | Parent and Other |  | Consolidated
| (in millions)
Three Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |  |  |
Revenues | $799 |  | $77 |  | $13 |  | $889 |  | $23 |  | $912
Operating income | 200 |  | 2 |  | 7 |  | 209 |  | 8 |  | 217
Net income (loss) attributable to Alliant Energy common shareowners |  |  |  |  |  |  | 161 |  | (1) |  | 160
Three Months Ended June 30, 2022 |  |  |  |  |  |  |  |  |  |  |
Revenues | $812 |  | $94 |  | $13 |  | $919 |  | $24 |  | $943
Operating income | 195 |  | 8 |  | 1 |  | 204 |  | 8 |  | 212
Net income attributable to Alliant Energy common shareowners |  |  |  |  |  |  | 150 |  | 9 |  | 159
Alliant Energy |  |  |  |  |  |  |  |  | ATC Holdings, |  | Alliant
| Utility |  | Non-Utility, |  | Energy
| Electric |  | Gas |  | Other |  | Total |  | Parent and Other |  | Consolidated
| (in millions)
Six Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |  |  |
Revenues | $1,567 |  | $353 |  | $25 |  | $1,945 |  | $45 |  | $1,990
Operating income | 363 |  | 52 |  | 11 |  | 426 |  | 13 |  | 439
Net income attributable to Alliant Energy common shareowners |  |  |  |  |  |  | 321 |  | 2 |  | 323
Six Months Ended June 30, 2022 |  |  |  |  |  |  |  |  |  |  |
Revenues | $1,586 |  | $356 |  | $23 |  | $1,965 |  | $47 |  | $2,012
Operating income | 376 |  | 65 |  | 4 |  | 445 |  | 15 |  | 460
Net income attributable to Alliant Energy common shareowners |  |  |  |  |  |  | 329 |  | 22 |  | 351
IPL | Electric |  | Gas |  | Other |  | Total
| (in millions)
Three Months Ended June 30, 2023 |  |  |  |  |  |  |
Revenues | $431 |  | $44 |  | $12 |  | $487
Operating income | 105 |  | — |  | 5 |  | 110
Net income |  |  |  |  |  |  | 89
Three Months Ended June 30, 2022 |  |  |  |  |  |  |
Revenues | $442 |  | $52 |  | $12 |  | $506
Operating income | 104 |  | 4 |  | 1 |  | 109
Net income |  |  |  |  |  |  | 87
Six Months Ended June 30, 2023 |  |  |  |  |  |  |
Revenues | $819 |  | $194 |  | $24 |  | $1,037
Operating income | 171 |  | 27 |  | 8 |  | 206
Net income |  |  |  |  |  |  | 161
Six Months Ended June 30, 2022 |  |  |  |  |  |  |
Revenues | $843 |  | $191 |  | $22 |  | $1,056
Operating income | 179 |  | 36 |  | 3 |  | 218
Net income |  |  |  |  |  |  | 173
WPL | Electric |  | Gas |  | Other |  | Total
| (in millions)
Three Months Ended June 30, 2023 |  |  |  |  |  |  |
Revenues | $368 |  | $33 |  | $1 |  | $402
Operating income | 95 |  | 2 |  | 2 |  | 99
Net income |  |  |  |  |  |  | 72
Three Months Ended June 30, 2022 |  |  |  |  |  |  |
Revenues | $370 |  | $42 |  | $1 |  | $413
Operating income | 91 |  | 4 |  | — |  | 95
Net income |  |  |  |  |  |  | 63
Six Months Ended June 30, 2023 |  |  |  |  |  |  |
Revenues | $748 |  | $159 |  | $1 |  | $908
Operating income | 192 |  | 25 |  | 3 |  | 220
Net income |  |  |  |  |  |  | 160
Six Months Ended June 30, 2022 |  |  |  |  |  |  |
Revenues | $743 |  | $165 |  | $1 |  | $909
Operating income | 197 |  | 29 |  | 1 |  | 227
Net income |  |  |  |  |  |  | 156

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