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v3.23.3

Revenues (Tables) | 9 Months Ended
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Sep. 30, 2023
Disaggregation of Revenue [Line Items] |
Disaggregation of Revenue | Disaggregation of revenues from contracts with customers, which correlates to revenues for each reportable segment, was as follows (in millions):
| Alliant Energy |  | IPL |  | WPL
Three Months Ended September 30 | 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022
Electric Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | $374 |  | $376 |  | $209 |  | $222 |  | $165 |  | $154
Retail - commercial | 241 |  | 243 |  | 158 |  | 165 |  | 83 |  | 78
Retail - industrial | 280 |  | 289 |  | 153 |  | 172 |  | 127 |  | 117
Wholesale | 59 |  | 68 |  | 21 |  | 19 |  | 38 |  | 49
Bulk power and other | 41 |  | 63 |  | 10 |  | 18 |  | 31 |  | 45
Total Electric Utility | 995 |  | 1,039 |  | 551 |  | 596 |  | 444 |  | 443
Gas Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | 23 |  | 28 |  | 14 |  | 14 |  | 9 |  | 14
Retail - commercial | 12 |  | 18 |  | 9 |  | 8 |  | 3 |  | 10
Retail - industrial | 2 |  | 4 |  | 2 |  | 3 |  | — |  | 1
Transportation/other | 10 |  | 12 |  | 6 |  | 8 |  | 4 |  | 4
Total Gas Utility | 47 |  | 62 |  | 31 |  | 33 |  | 16 |  | 29
Other Utility: |  |  |  |  |  |  |  |  |  |  |
Steam | 11 |  | 9 |  | 11 |  | 9 |  | — |  | —
Other utility | 2 |  | 2 |  | 1 |  | 2 |  | 1 |  | —
Total Other Utility | 13 |  | 11 |  | 12 |  | 11 |  | 1 |  | —
Non-Utility and Other: |  |  |  |  |  |  |  |  |  |  |
Travero and other | 22 |  | 23 |  | — |  | — |  | — |  | —
Total Non-Utility and Other | 22 |  | 23 |  | — |  | — |  | — |  | —
Total revenues | $1,077 |  | $1,135 |  | $594 |  | $640 |  | $461 |  | $472
| Alliant Energy |  | IPL |  | WPL
Nine Months Ended September 30 | 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022
Electric Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | $943 |  | $956 |  | $503 |  | $529 |  | $440 |  | $427
Retail - commercial | 627 |  | 628 |  | 399 |  | 411 |  | 228 |  | 217
Retail - industrial | 740 |  | 743 |  | 389 |  | 418 |  | 351 |  | 325
Wholesale | 154 |  | 168 |  | 47 |  | 49 |  | 107 |  | 119
Bulk power and other | 98 |  | 129 |  | 32 |  | 31 |  | 66 |  | 98
Total Electric Utility | 2,562 |  | 2,624 |  | 1,370 |  | 1,438 |  | 1,192 |  | 1,186
Gas Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | 233 |  | 237 |  | 131 |  | 127 |  | 102 |  | 110
Retail - commercial | 122 |  | 127 |  | 65 |  | 62 |  | 57 |  | 65
Retail - industrial | 12 |  | 15 |  | 8 |  | 10 |  | 4 |  | 5
Transportation/other | 33 |  | 39 |  | 20 |  | 25 |  | 13 |  | 14
Total Gas Utility | 400 |  | 418 |  | 224 |  | 224 |  | 176 |  | 194
Other Utility: |  |  |  |  |  |  |  |  |  |  |
Steam | 32 |  | 29 |  | 32 |  | 29 |  | — |  | —
Other utility | 6 |  | 6 |  | 4 |  | 5 |  | 2 |  | 1
Total Other Utility | 38 |  | 35 |  | 36 |  | 34 |  | 2 |  | 1
Non-Utility and Other: |  |  |  |  |  |  |  |  |  |  |
Travero and other | 66 |  | 70 |  | — |  | — |  | — |  | —
Total Non-Utility and Other | 66 |  | 70 |  | — |  | — |  | — |  | —
Total revenues | $3,066 |  | $3,147 |  | $1,630 |  | $1,696 |  | $1,370 |  | $1,381
IPL [Member] |
Disaggregation of Revenue [Line Items] |
Disaggregation of Revenue | Disaggregation of revenues from contracts with customers, which correlates to revenues for each reportable segment, was as follows (in millions):
| Alliant Energy |  | IPL |  | WPL
Three Months Ended September 30 | 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022
Electric Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | $374 |  | $376 |  | $209 |  | $222 |  | $165 |  | $154
Retail - commercial | 241 |  | 243 |  | 158 |  | 165 |  | 83 |  | 78
Retail - industrial | 280 |  | 289 |  | 153 |  | 172 |  | 127 |  | 117
Wholesale | 59 |  | 68 |  | 21 |  | 19 |  | 38 |  | 49
Bulk power and other | 41 |  | 63 |  | 10 |  | 18 |  | 31 |  | 45
Total Electric Utility | 995 |  | 1,039 |  | 551 |  | 596 |  | 444 |  | 443
Gas Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | 23 |  | 28 |  | 14 |  | 14 |  | 9 |  | 14
Retail - commercial | 12 |  | 18 |  | 9 |  | 8 |  | 3 |  | 10
Retail - industrial | 2 |  | 4 |  | 2 |  | 3 |  | — |  | 1
Transportation/other | 10 |  | 12 |  | 6 |  | 8 |  | 4 |  | 4
Total Gas Utility | 47 |  | 62 |  | 31 |  | 33 |  | 16 |  | 29
Other Utility: |  |  |  |  |  |  |  |  |  |  |
Steam | 11 |  | 9 |  | 11 |  | 9 |  | — |  | —
Other utility | 2 |  | 2 |  | 1 |  | 2 |  | 1 |  | —
Total Other Utility | 13 |  | 11 |  | 12 |  | 11 |  | 1 |  | —
Non-Utility and Other: |  |  |  |  |  |  |  |  |  |  |
Travero and other | 22 |  | 23 |  | — |  | — |  | — |  | —
Total Non-Utility and Other | 22 |  | 23 |  | — |  | — |  | — |  | —
Total revenues | $1,077 |  | $1,135 |  | $594 |  | $640 |  | $461 |  | $472
| Alliant Energy |  | IPL |  | WPL
Nine Months Ended September 30 | 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022
Electric Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | $943 |  | $956 |  | $503 |  | $529 |  | $440 |  | $427
Retail - commercial | 627 |  | 628 |  | 399 |  | 411 |  | 228 |  | 217
Retail - industrial | 740 |  | 743 |  | 389 |  | 418 |  | 351 |  | 325
Wholesale | 154 |  | 168 |  | 47 |  | 49 |  | 107 |  | 119
Bulk power and other | 98 |  | 129 |  | 32 |  | 31 |  | 66 |  | 98
Total Electric Utility | 2,562 |  | 2,624 |  | 1,370 |  | 1,438 |  | 1,192 |  | 1,186
Gas Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | 233 |  | 237 |  | 131 |  | 127 |  | 102 |  | 110
Retail - commercial | 122 |  | 127 |  | 65 |  | 62 |  | 57 |  | 65
Retail - industrial | 12 |  | 15 |  | 8 |  | 10 |  | 4 |  | 5
Transportation/other | 33 |  | 39 |  | 20 |  | 25 |  | 13 |  | 14
Total Gas Utility | 400 |  | 418 |  | 224 |  | 224 |  | 176 |  | 194
Other Utility: |  |  |  |  |  |  |  |  |  |  |
Steam | 32 |  | 29 |  | 32 |  | 29 |  | — |  | —
Other utility | 6 |  | 6 |  | 4 |  | 5 |  | 2 |  | 1
Total Other Utility | 38 |  | 35 |  | 36 |  | 34 |  | 2 |  | 1
Non-Utility and Other: |  |  |  |  |  |  |  |  |  |  |
Travero and other | 66 |  | 70 |  | — |  | — |  | — |  | —
Total Non-Utility and Other | 66 |  | 70 |  | — |  | — |  | — |  | —
Total revenues | $3,066 |  | $3,147 |  | $1,630 |  | $1,696 |  | $1,370 |  | $1,381
WPL [Member] |
Disaggregation of Revenue [Line Items] |
Disaggregation of Revenue | Disaggregation of revenues from contracts with customers, which correlates to revenues for each reportable segment, was as follows (in millions):
| Alliant Energy |  | IPL |  | WPL
Three Months Ended September 30 | 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022
Electric Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | $374 |  | $376 |  | $209 |  | $222 |  | $165 |  | $154
Retail - commercial | 241 |  | 243 |  | 158 |  | 165 |  | 83 |  | 78
Retail - industrial | 280 |  | 289 |  | 153 |  | 172 |  | 127 |  | 117
Wholesale | 59 |  | 68 |  | 21 |  | 19 |  | 38 |  | 49
Bulk power and other | 41 |  | 63 |  | 10 |  | 18 |  | 31 |  | 45
Total Electric Utility | 995 |  | 1,039 |  | 551 |  | 596 |  | 444 |  | 443
Gas Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | 23 |  | 28 |  | 14 |  | 14 |  | 9 |  | 14
Retail - commercial | 12 |  | 18 |  | 9 |  | 8 |  | 3 |  | 10
Retail - industrial | 2 |  | 4 |  | 2 |  | 3 |  | — |  | 1
Transportation/other | 10 |  | 12 |  | 6 |  | 8 |  | 4 |  | 4
Total Gas Utility | 47 |  | 62 |  | 31 |  | 33 |  | 16 |  | 29
Other Utility: |  |  |  |  |  |  |  |  |  |  |
Steam | 11 |  | 9 |  | 11 |  | 9 |  | — |  | —
Other utility | 2 |  | 2 |  | 1 |  | 2 |  | 1 |  | —
Total Other Utility | 13 |  | 11 |  | 12 |  | 11 |  | 1 |  | —
Non-Utility and Other: |  |  |  |  |  |  |  |  |  |  |
Travero and other | 22 |  | 23 |  | — |  | — |  | — |  | —
Total Non-Utility and Other | 22 |  | 23 |  | — |  | — |  | — |  | —
Total revenues | $1,077 |  | $1,135 |  | $594 |  | $640 |  | $461 |  | $472
| Alliant Energy |  | IPL |  | WPL
Nine Months Ended September 30 | 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022
Electric Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | $943 |  | $956 |  | $503 |  | $529 |  | $440 |  | $427
Retail - commercial | 627 |  | 628 |  | 399 |  | 411 |  | 228 |  | 217
Retail - industrial | 740 |  | 743 |  | 389 |  | 418 |  | 351 |  | 325
Wholesale | 154 |  | 168 |  | 47 |  | 49 |  | 107 |  | 119
Bulk power and other | 98 |  | 129 |  | 32 |  | 31 |  | 66 |  | 98
Total Electric Utility | 2,562 |  | 2,624 |  | 1,370 |  | 1,438 |  | 1,192 |  | 1,186
Gas Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | 233 |  | 237 |  | 131 |  | 127 |  | 102 |  | 110
Retail - commercial | 122 |  | 127 |  | 65 |  | 62 |  | 57 |  | 65
Retail - industrial | 12 |  | 15 |  | 8 |  | 10 |  | 4 |  | 5
Transportation/other | 33 |  | 39 |  | 20 |  | 25 |  | 13 |  | 14
Total Gas Utility | 400 |  | 418 |  | 224 |  | 224 |  | 176 |  | 194
Other Utility: |  |  |  |  |  |  |  |  |  |  |
Steam | 32 |  | 29 |  | 32 |  | 29 |  | — |  | —
Other utility | 6 |  | 6 |  | 4 |  | 5 |  | 2 |  | 1
Total Other Utility | 38 |  | 35 |  | 36 |  | 34 |  | 2 |  | 1
Non-Utility and Other: |  |  |  |  |  |  |  |  |  |  |
Travero and other | 66 |  | 70 |  | — |  | — |  | — |  | —
Total Non-Utility and Other | 66 |  | 70 |  | — |  | — |  | — |  | —
Total revenues | $3,066 |  | $3,147 |  | $1,630 |  | $1,696 |  | $1,370 |  | $1,381

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