XML 55 R34.htm IDEA: XBRL DOCUMENT
v3.24.3

Long-Term Debt to Affiliated Trusts (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2024
Long Term Debt To Affiliated Trust [Abstract] |
Schedule of Distribution Rates | The distribution rates were as follows during the nine months ended September 30, 2024 and the year ended December 31, 2023:
|  | September 30, |  |  | December 31, |
|  | 2024 |  |  | 2023 |
Low distribution rate |  |  | 6.15 | % |  |  | 5.64 | %
High distribution rate |  |  | 6.51 | % |  |  | 6.55 | %
Distribution rate at the end of the period |  |  | 6.15 | % |  |  | 6.51 | %

X
- Definition Long-Term Debt to Affiliated Trust [Abstract] + References No definition available. + Details
Name: | ava_LongTermDebtToAffiliatedTrustAbstract
Namespace Prefix: | ava_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of distribution rates. + References No definition available. + Details
Name: | ava_ScheduleOfDistributionRatesTableTextBlock
Namespace Prefix: | ava_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration