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v3.25.3

Revenue | 9 Months Ended
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Sep. 30, 2025
Revenue from Contract with Customer [Abstract] |
Revenue | (4) Rev enue The following tables depict the disaggregation of revenue, including intercompany revenue, from contracts with customers by customer type and timing of revenue recognition for each of the reportable segments for the three and nine months ended September 30, 2025, and 2024. Sales tax and other similar taxes are excluded from revenues.
Three Months Ended September 30, 2025 | Electric Utilities |  | Gas Utilities |  | Inter-segment Eliminations |  | Total |
Customer types: | (in millions) |
Retail | $ | 201.3 |  | $ | 128.6 |  | $ | — |  | $ | 329.9 |
Transportation |  | — |  |  | 43.6 |  |  | (0.1 | ) |  | 43.5 |
Wholesale |  | 5.5 |  |  | — |  |  | — |  |  | 5.5 |
Market - off-system sales |  | 16.3 |  |  | — |  |  | — |  |  | 16.3 |
Transmission |  | 11.1 |  |  | 0.1 |  |  | — |  |  | 11.2 |
Other revenues |  | 14.6 |  |  | 10.2 |  |  | (3.8 | ) |  | 21.0 |
Revenue from contracts with customers | $ | 248.8 |  | $ | 182.5 |  | $ | (3.9 | ) | $ | 427.4 |
Alternative revenue and other |  | 0.9 |  |  | 1.9 |  |  | — |  |  | 2.8 |
Total revenues | $ | 249.7 |  | $ | 184.4 |  | $ | (3.9 | ) | $ | 430.2 |
Timing of revenue recognition: |  |  |  |  |  |  |  |
Services transferred at a point in time | $ | 8.8 |  | $ | — |  | $ | — |  | $ | 8.8 |
Services transferred over time |  | 240.0 |  |  | 182.5 |  |  | (3.9 | ) |  | 418.6 |
Revenue from contracts with customers | $ | 248.8 |  | $ | 182.5 |  | $ | (3.9 | ) | $ | 427.4 |
Three Months Ended September 30, 2024 | Electric Utilities |  | Gas Utilities |  | Inter-segment Eliminations |  | Total |
Customer types: | (in millions) |
Retail | $ | 186.3 |  | $ | 117.5 |  | $ | — |  | $ | 303.8 |
Transportation |  | — |  |  | 43.2 |  |  | — |  |  | 43.2 |
Wholesale |  | 6.1 |  |  | — |  |  | — |  |  | 6.1 |
Market - off-system sales |  | 10.7 |  |  | — |  |  | — |  |  | 10.7 |
Transmission |  | 13.6 |  |  | — |  |  | — |  |  | 13.6 |
Other revenues |  | 14.9 |  |  | 10.8 |  |  | (4.5 | ) |  | 21.2 |
Revenue from contracts with customers | $ | 231.6 |  | $ | 171.5 |  | $ | (4.5 | ) | $ | 398.6 |
Alternative revenue and other |  | 0.9 |  |  | 2.1 |  |  | — |  |  | 3.0 |
Total revenues | $ | 232.5 |  | $ | 173.6 |  | $ | (4.5 | ) | $ | 401.6 |
Timing of revenue recognition: |  |  |  |  |  |  |  |
Services transferred at a point in time | $ | 9.3 |  | $ | — |  | $ | — |  | $ | 9.3 |
Services transferred over time |  | 222.3 |  |  | 171.5 |  |  | (4.5 | ) |  | 389.3 |
Revenue from contracts with customers | $ | 231.6 |  | $ | 171.5 |  | $ | (4.5 | ) | $ | 398.6 |
Nine Months Ended September 30, 2025 | Electric Utilities |  | Gas Utilities |  | Inter-segment Eliminations |  | Total |
Customer types: | (in millions) |
Retail | $ | 570.6 |  | $ | 797.0 |  | $ | — |  | $ | 1,367.6 |
Transportation |  | — |  |  | 143.4 |  |  | (0.3 | ) |  | 143.1 |
Wholesale |  | 16.9 |  |  | — |  |  | — |  |  | 16.9 |
Market - off-system sales |  | 38.3 |  |  | 0.1 |  |  | — |  |  | 38.4 |
Transmission |  | 33.3 |  |  | 0.3 |  |  | — |  |  | 33.6 |
Other revenues |  | 43.9 |  |  | 31.5 |  |  | (11.4 | ) |  | 64.0 |
Revenue from contracts with customers | $ | 703.0 |  | $ | 972.3 |  | $ | (11.7 | ) | $ | 1,663.6 |
Alternative revenue and other |  | 3.3 |  |  | 7.6 |  |  | — |  |  | 10.9 |
Total revenues | $ | 706.3 |  | $ | 979.9 |  | $ | (11.7 | ) | $ | 1,674.5 |
Timing of revenue recognition: |  |  |  |  |  |  |  |
Services transferred at a point in time | $ | 25.9 |  | $ | — |  | $ | — |  | $ | 25.9 |
Services transferred over time |  | 677.1 |  |  | 972.3 |  |  | (11.7 | ) |  | 1,637.7 |
Revenue from contracts with customers | $ | 703.0 |  | $ | 972.3 |  | $ | (11.7 | ) | $ | 1,663.6 |
Nine Months Ended September 30, 2024 | Electric Utilities |  | Gas Utilities |  | Inter-segment Eliminations |  | Total |
Customer types: | (in millions) |
Retail | $ | 529.4 |  | $ | 707.8 |  | $ | — |  | $ | 1,237.2 |
Transportation |  | — |  |  | 130.9 |  |  | — |  |  | 130.9 |
Wholesale |  | 21.1 |  |  | — |  |  | — |  |  | 21.1 |
Market - off-system sales |  | 22.8 |  |  | — |  |  | — |  |  | 22.8 |
Transmission |  | 39.1 |  |  | 0.4 |  |  | — |  |  | 39.5 |
Other revenues |  | 43.3 |  |  | 31.6 |  |  | (13.4 | ) |  | 61.5 |
Revenue from contracts with customers | $ | 655.7 |  | $ | 870.7 |  | $ | (13.4 | ) | $ | 1,513.0 |
Alternative revenue and other |  | 4.1 |  |  | 13.5 |  |  | — |  |  | 17.6 |
Total revenues | $ | 659.8 |  | $ | 884.2 |  | $ | (13.4 | ) | $ | 1,530.6 |
Timing of revenue recognition: |  |  |  |  |  |  |  |
Services transferred at a point in time | $ | 25.9 |  | $ | — |  | $ | — |  | $ | 25.9 |
Services transferred over time |  | 629.8 |  |  | 870.7 |  |  | (13.4 | ) |  | 1,487.1 |
Revenue from contracts with customers | $ | 655.7 |  | $ | 870.7 |  | $ | (13.4 | ) | $ | 1,513.0 |

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-9 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-15 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-13 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 606 -Publisher FASB -URI https://asc.fasb.org/606/tableOfContent + Details
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