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Information by Business Segments (Tables) | 6 Months Ended
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Jun. 30, 2025
Segment Reporting [Abstract] |
Schedule of Business Segments | The following table presents information for each of the Company’s business segments (dollars in millions):
|  | Reportable Segments |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Avista Utilities |  |  | Alaska Electric Light and Power Company |  |  | Total Utility |  |  | Other Non-Reportable Segment Items |  |  | Eliminations (1) |  |  | Total |
For the three months ended June 30, 2025: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  | $ | 400 |  |  | $ | 11 |  |  | $ | 411 |  |  | $ | — |  |  | $ | — |  |  | $ | 411 |
Resource costs |  |  | 129 |  |  |  | 1 |  |  |  | 130 |  |  |  | — |  |  |  | — |  |  |  | 130 |
Other operating expenses |  |  | 120 |  |  |  | 4 |  |  |  | 124 |  |  |  | — |  |  |  | — |  |  |  | 124 |
Depreciation and amortization |  |  | 69 |  |  |  | 3 |  |  |  | 72 |  |  |  | — |  |  |  | — |  |  |  | 72 |
Interest income |  |  | 3 |  |  |  | — |  |  |  | 3 |  |  |  | — |  |  |  | — |  |  |  | 3 |
Interest expense (2) |  |  | 35 |  |  |  | 1 |  |  |  | 36 |  |  |  | 1 |  |  |  | — |  |  |  | 37 |
Other segment expenses (3) |  |  | 24 |  |  |  | 1 |  |  |  | 25 |  |  |  | 11 |  |  |  | — |  |  |  | 36 |
Income tax expense (benefit) |  |  | 3 |  |  |  | — |  |  |  | 3 |  |  |  | (2 | ) |  |  | — |  |  |  | 1 |
Net income (loss) |  |  | 23 |  |  |  | 1 |  |  |  | 24 |  |  |  | (10 | ) |  |  | — |  |  |  | 14 |
Capital expenditures (4) |  |  | 136 |  |  |  | 7 |  |  |  | 143 |  |  |  | — |  |  |  | — |  |  |  | 143 |
For the three months ended June 30, 2024: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  | $ | 391 |  |  | $ | 11 |  |  | $ | 402 |  |  | $ | — |  |  | $ | — |  |  | $ | 402 |
Resource costs |  |  | 143 |  |  |  | 1 |  |  |  | 144 |  |  |  | — |  |  |  | — |  |  |  | 144 |
Other operating expenses |  |  | 105 |  |  |  | 4 |  |  |  | 109 |  |  |  | — |  |  |  | — |  |  |  | 109 |
Depreciation and amortization |  |  | 65 |  |  |  | 3 |  |  |  | 68 |  |  |  | — |  |  |  | — |  |  |  | 68 |
Interest income |  |  | 4 |  |  |  | — |  |  |  | 4 |  |  |  | — |  |  |  | (1 | ) |  |  | 3 |
Interest expense (2) |  |  | 35 |  |  |  | 2 |  |  |  | 37 |  |  |  | 1 |  |  |  | (1 | ) |  |  | 37 |
Other segment expenses (3) |  |  | 22 |  |  |  | — |  |  |  | 22 |  |  |  | 1 |  |  |  | — |  |  |  | 23 |
Income tax expense |  |  | 1 |  |  |  | — |  |  |  | 1 |  |  |  | — |  |  |  | — |  |  |  | 1 |
Net income (loss) |  |  | 24 |  |  |  | 1 |  |  |  | 25 |  |  |  | (2 | ) |  |  | — |  |  |  | 23 |
Capital expenditures (4) |  |  | 128 |  |  |  | 5 |  |  |  | 133 |  |  |  | — |  |  |  | — |  |  |  | 133 |
For the six months ended June 30, 2025: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  | $ | 1,004 |  |  | $ | 24 |  |  | $ | 1,028 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,028 |
Resource costs |  |  | 385 |  |  |  | 1 |  |  |  | 386 |  |  |  | — |  |  |  | — |  |  |  | 386 |
Other operating expenses |  |  | 244 |  |  |  | 8 |  |  |  | 252 |  |  |  | 1 |  |  |  | — |  |  |  | 253 |
Depreciation and amortization |  |  | 137 |  |  |  | 6 |  |  |  | 143 |  |  |  | — |  |  |  | — |  |  |  | 143 |
Interest income |  |  | 6 |  |  |  | — |  |  |  | 6 |  |  |  | — |  |  |  | (1 | ) |  |  | 5 |
Interest expense (2) |  |  | 72 |  |  |  | 3 |  |  |  | 75 |  |  |  | 2 |  |  |  | (1 | ) |  |  | 76 |
Other segment expenses (3) |  |  | 57 |  |  |  | — |  |  |  | 57 |  |  |  | 12 |  |  |  | — |  |  |  | 69 |
Income tax expense (benefit) |  |  | 14 |  |  |  | 2 |  |  |  | 16 |  |  |  | (3 | ) |  |  | — |  |  |  | 13 |
Net income (loss) |  |  | 101 |  |  |  | 4 |  |  |  | 105 |  |  |  | (12 | ) |  |  | — |  |  |  | 93 |
Capital expenditures (4) |  |  | 236 |  |  |  | 10 |  |  |  | 246 |  |  |  | — |  |  |  | — |  |  |  | 246 |
For the six months ended June 30, 2024: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  | $ | 986 |  |  | $ | 25 |  |  | $ | 1,011 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,011 |
Resource costs |  |  | 436 |  |  |  | 1 |  |  |  | 437 |  |  |  | — |  |  |  | — |  |  |  | 437 |
Other operating expenses |  |  | 213 |  |  |  | 8 |  |  |  | 221 |  |  |  | — |  |  |  | — |  |  |  | 221 |
Depreciation and amortization |  |  | 130 |  |  |  | 6 |  |  |  | 136 |  |  |  | — |  |  |  | — |  |  |  | 136 |
Interest income |  |  | 9 |  |  |  | — |  |  |  | 9 |  |  |  | — |  |  |  | (1 | ) |  |  | 8 |
Interest expense (2) |  |  | 71 |  |  |  | 3 |  |  |  | 74 |  |  |  | 1 |  |  |  | (1 | ) |  |  | 74 |
Other segment expenses (3) |  |  | 53 |  |  |  | — |  |  |  | 53 |  |  |  | 1 |  |  |  | — |  |  |  | 54 |
Income tax expense |  |  | 1 |  |  |  | 2 |  |  |  | 3 |  |  |  | — |  |  |  | — |  |  |  | 3 |
Net income (loss) |  |  | 91 |  |  |  | 5 |  |  |  | 96 |  |  |  | (2 | ) |  |  | — |  |  |  | 94 |
Capital expenditures (4) |  |  | 245 |  |  |  | 6 |  |  |  | 251 |  |  |  | — |  |  |  | — |  |  |  | 251 |
Total Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
As of June 30, 2025: |  | $ | 7,623 |  |  | $ | 289 |  |  | $ | 7,912 |  |  | $ | 184 |  |  | $ | (31 | ) |  | $ | 8,065 |
As of December 31, 2024: |  | $ | 7,494 |  |  | $ | 283 |  |  | $ | 7,777 |  |  | $ | 194 |  |  | $ | (30 | ) |  | $ | 7,941 |
(1) Intersegment eliminations reported as interest expense represent intercompany interest. (2) Including interest expense to affiliated trusts. (3) Other segment items include taxes other than income tax, AFUDC equity, other miscellaneous expenses, and earnings (losses) from investments. (4) The capital expenditures for the other businesses are included in other investing activities on the Condensed Consolidated Statements of Cash Flows.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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