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v3.23.1

Revenues (Tables) | 3 Months Ended
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Mar. 31, 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 March 31 | 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022
Electric Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | $285 |  | $293 |  | $143 |  | $150 |  | $142 |  | $143
Retail - commercial | 185 |  | 188 |  | 112 |  | 118 |  | 73 |  | 70
Retail - industrial | 216 |  | 211 |  | 107 |  | 111 |  | 109 |  | 100
Wholesale | 46 |  | 47 |  | 12 |  | 15 |  | 34 |  | 32
Bulk power and other | 36 |  | 34 |  | 14 |  | 6 |  | 22 |  | 28
Total Electric Utility | 768 |  | 773 |  | 388 |  | 400 |  | 380 |  | 373
Gas Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | 167 |  | 158 |  | 93 |  | 85 |  | 74 |  | 73
Retail - commercial | 88 |  | 82 |  | 44 |  | 40 |  | 44 |  | 42
Retail - industrial | 7 |  | 8 |  | 4 |  | 5 |  | 3 |  | 3
Transportation/other | 14 |  | 14 |  | 9 |  | 9 |  | 5 |  | 5
Total Gas Utility | 276 |  | 262 |  | 150 |  | 139 |  | 126 |  | 123
Other Utility: |  |  |  |  |  |  |  |  |  |  |
Steam | 10 |  | 9 |  | 10 |  | 9 |  | — |  | —
Other utility | 1 |  | 2 |  | 1 |  | 2 |  | — |  | —
Total Other Utility | 11 |  | 11 |  | 11 |  | 11 |  | — |  | —
Non-Utility and Other: |  |  |  |  |  |  |  |  |  |  |
Travero and other | 22 |  | 22 |  | — |  | — |  | — |  | —
Total Non-Utility and Other | 22 |  | 22 |  | — |  | — |  | — |  | —
Total revenues | $1,077 |  | $1,068 |  | $549 |  | $550 |  | $506 |  | $496
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 March 31 | 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022
Electric Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | $285 |  | $293 |  | $143 |  | $150 |  | $142 |  | $143
Retail - commercial | 185 |  | 188 |  | 112 |  | 118 |  | 73 |  | 70
Retail - industrial | 216 |  | 211 |  | 107 |  | 111 |  | 109 |  | 100
Wholesale | 46 |  | 47 |  | 12 |  | 15 |  | 34 |  | 32
Bulk power and other | 36 |  | 34 |  | 14 |  | 6 |  | 22 |  | 28
Total Electric Utility | 768 |  | 773 |  | 388 |  | 400 |  | 380 |  | 373
Gas Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | 167 |  | 158 |  | 93 |  | 85 |  | 74 |  | 73
Retail - commercial | 88 |  | 82 |  | 44 |  | 40 |  | 44 |  | 42
Retail - industrial | 7 |  | 8 |  | 4 |  | 5 |  | 3 |  | 3
Transportation/other | 14 |  | 14 |  | 9 |  | 9 |  | 5 |  | 5
Total Gas Utility | 276 |  | 262 |  | 150 |  | 139 |  | 126 |  | 123
Other Utility: |  |  |  |  |  |  |  |  |  |  |
Steam | 10 |  | 9 |  | 10 |  | 9 |  | — |  | —
Other utility | 1 |  | 2 |  | 1 |  | 2 |  | — |  | —
Total Other Utility | 11 |  | 11 |  | 11 |  | 11 |  | — |  | —
Non-Utility and Other: |  |  |  |  |  |  |  |  |  |  |
Travero and other | 22 |  | 22 |  | — |  | — |  | — |  | —
Total Non-Utility and Other | 22 |  | 22 |  | — |  | — |  | — |  | —
Total revenues | $1,077 |  | $1,068 |  | $549 |  | $550 |  | $506 |  | $496
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 March 31 | 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022
Electric Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | $285 |  | $293 |  | $143 |  | $150 |  | $142 |  | $143
Retail - commercial | 185 |  | 188 |  | 112 |  | 118 |  | 73 |  | 70
Retail - industrial | 216 |  | 211 |  | 107 |  | 111 |  | 109 |  | 100
Wholesale | 46 |  | 47 |  | 12 |  | 15 |  | 34 |  | 32
Bulk power and other | 36 |  | 34 |  | 14 |  | 6 |  | 22 |  | 28
Total Electric Utility | 768 |  | 773 |  | 388 |  | 400 |  | 380 |  | 373
Gas Utility: |  |  |  |  |  |  |  |  |  |  |
Retail - residential | 167 |  | 158 |  | 93 |  | 85 |  | 74 |  | 73
Retail - commercial | 88 |  | 82 |  | 44 |  | 40 |  | 44 |  | 42
Retail - industrial | 7 |  | 8 |  | 4 |  | 5 |  | 3 |  | 3
Transportation/other | 14 |  | 14 |  | 9 |  | 9 |  | 5 |  | 5
Total Gas Utility | 276 |  | 262 |  | 150 |  | 139 |  | 126 |  | 123
Other Utility: |  |  |  |  |  |  |  |  |  |  |
Steam | 10 |  | 9 |  | 10 |  | 9 |  | — |  | —
Other utility | 1 |  | 2 |  | 1 |  | 2 |  | — |  | —
Total Other Utility | 11 |  | 11 |  | 11 |  | 11 |  | — |  | —
Non-Utility and Other: |  |  |  |  |  |  |  |  |  |  |
Travero and other | 22 |  | 22 |  | — |  | — |  | — |  | —
Total Non-Utility and Other | 22 |  | 22 |  | — |  | — |  | — |  | —
Total revenues | $1,077 |  | $1,068 |  | $549 |  | $550 |  | $506 |  | $496

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