XML 53 R29.htm IDEA: XBRL DOCUMENT
v3.23.3

Balance Sheet Components (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2023
Balance Sheet Related Disclosures [Abstract] |
Schedule of Inventory | Inventories of materials and supplies, emission allowances, fuel stock and stored natural gas are recorded at average cost and consisted of the following as of September 30, 2023 and December 31, 2022 (dollars in thousands):
|  | September 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Materials and supplies |  | $ | 80,916 |  |  | $ | 75,766 |
Emission allowances |  |  | 40,842 |  |  |  | — |
Stored natural gas |  |  | 17,841 |  |  |  | 26,788 |
Fuel stock |  |  | 5,575 |  |  |  | 5,120 |
Total |  | $ | 145,174 |  |  | $ | 107,674 |
Schedule of Other Current Assets | Other current assets consisted of the following as of September 30, 2023 and December 31, 2022 (dollars in thousands):
|  | September 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Prepayments |  | $ | 51,194 |  |  | $ | 30,201 |
Income taxes receivable |  |  | 32,157 |  |  |  | 30,740 |
Derivative assets net of collateral |  |  | 1,981 |  |  |  | 18,198 |
Collateral posted for derivative instruments after netting with outstanding derivatives |  |  | — |  |  |  | 66,142 |
Other |  |  | 8,257 |  |  |  | 5,886 |
Total |  | $ | 93,589 |  |  | $ | 151,167 |
Schedule of Net Utility Property Recorded at Original Cost Net of Accumulated Depreciation | Net utility property, which is recorded at original cost, net of accumulated depreciation, consisted of the following as of September 30, 2023 and December 31, 2022 (dollars in thousands):
|  | September 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Utility plant in service |  | $ | 7,708,173 |  |  | $ | 7,561,688 |
Construction work in progress |  |  | 199,365 |  |  |  | 164,147 |
Total |  |  | 7,907,538 |  |  |  | 7,725,835 |
Less: Accumulated depreciation and amortization |  |  | 2,282,470 |  |  |  | 2,281,126 |
Total |  | $ | 5,625,068 |  |  | $ | 5,444,709 |
Other Property and Investments-Net and Other Non-Current Assets | Other property and investments-net and other non-current assets consisted of the following as of September 30, 2023 and December 31, 2022 (dollars in thousands):
|  | September 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Equity investments |  | $ | 154,873 |  |  | $ | 147,809 |
Operating lease ROU assets |  |  | 68,087 |  |  |  | 68,238 |
Finance lease ROU assets |  |  | 37,324 |  |  |  | 40,056 |
Non-utility property |  |  | 30,909 |  |  |  | 25,401 |
Notes receivable |  |  | 18,234 |  |  |  | 17,954 |
Long-term prepaid license fees |  |  | 16,293 |  |  |  | 17,936 |
Pension asset |  |  | 22,268 |  |  |  | 13,382 |
Investment in affiliated trust |  |  | 11,547 |  |  |  | 11,547 |
Deferred compensation assets |  |  | 7,763 |  |  |  | 7,541 |
Other |  |  | 22,919 |  |  |  | 15,221 |
Total |  | $ | 390,217 |  |  | $ | 365,085 |
Other Current Liabilities | Other current liabilities consisted of the following as of September 30, 2023 and December 31, 2022 (dollars in thousands):
|  | September 30, 2023 |  |  | December 31, 2022 |
Accrued taxes other than income taxes |  | $ | 29,722 |  |  | $ | 38,568 |
Derivative liabilities |  |  | 19,684 |  |  |  | 26,910 |
Employee paid time off accruals |  |  | 31,231 |  |  |  | 29,279 |
Accrued interest |  |  | 42,610 |  |  |  | 20,863 |
Deferred wholesale revenue |  |  | — |  |  |  | 8,481 |
Pensions and other postretirement benefits |  |  | 14,327 |  |  |  | 15,625 |
Other |  |  | 45,227 |  |  |  | 49,689 |
Total |  | $ | 182,801 |  |  | $ | 189,415 |
Schedule of Other Non-Current Liabilities and Deferred Credits | Other non-current liabilities and deferred credits consisted of the following as of September 30, 2023 and December 31, 2022 (dollars in thousands):
|  | September 30, 2023 |  |  | December 31, 2022 |
Operating lease liabilities |  | $ | 67,088 |  |  | $ | 64,284 |
Finance lease liabilities |  |  | 39,945 |  |  |  | 42,495 |
Deferred investment tax credits |  |  | 28,371 |  |  |  | 28,784 |
Climate Commitment Act obligations |  |  | 30,457 |  |  |  | — |
Asset retirement obligations |  |  | 16,024 |  |  |  | 15,783 |
Derivative liabilities |  |  | 14,035 |  |  |  | 7,892 |
Other |  |  | 16,786 |  |  |  | 16,617 |
Total |  | $ | 212,706 |  |  | $ | 175,855 |
Schedule of Regulatory Assets and Liabilities | Regulatory assets and liabilities consisted of the following as of September 30, 2023 and December 31, 2022 (dollars in thousands):
|  | September 30, 2023 |  |  | December 31, 2022 |
|  | Current |  |  | Non-Current |  |  | Current |  |  | Non-Current |
Regulatory Assets |  |  |  |  |  |  |  |  |  |  |  |
Energy commodity derivatives |  | $ | 45,144 |  |  | $ | 13,715 |  |  | $ | 112,090 |  |  | $ | 18,185 |
Decoupling surcharge |  |  | 2,087 |  |  |  | 3,407 |  |  |  | 6,250 |  |  |  | 5,449 |
Deferred natural gas costs |  |  | 84,851 |  |  |  | — |  |  |  | 52,091 |  |  |  | — |
Deferred power costs |  |  | 34,751 |  |  |  | 17,766 |  |  |  | 23,356 |  |  |  | 24,043 |
Deferred income taxes |  |  | — |  |  |  | 242,498 |  |  |  | — |  |  |  | 240,325 |
Pension and other postretirement benefit plans |  |  | — |  |  |  | 131,269 |  |  |  | — |  |  |  | 135,337 |
Interest rate swaps |  |  | — |  |  |  | 181,050 |  |  |  | — |  |  |  | 185,919 |
AFUDC above FERC allowed rate |  |  | — |  |  |  | 49,778 |  |  |  | — |  |  |  | 51,649 |
Settlement with Coeur d'Alene Tribe |  |  | — |  |  |  | 36,972 |  |  |  | — |  |  |  | 37,809 |
Advanced meter infrastructure |  |  | — |  |  |  | 30,104 |  |  |  | — |  |  |  | 32,381 |
Utility plant abandoned |  |  | — |  |  |  | 30,362 |  |  |  | — |  |  |  | 24,389 |
Deferred Climate Commitment Act costs |  |  | — |  |  |  | 30,760 |  |  |  | — |  |  |  | — |
COVID-19 deferrals |  |  | — |  |  |  | 10,170 |  |  |  | — |  |  |  | 9,793 |
Unamortized debt repurchase costs |  |  | — |  |  |  | 5,817 |  |  |  | — |  |  |  | 6,177 |
Demand side management programs |  |  | — |  |  |  | 2,728 |  |  |  | — |  |  |  | 3,683 |
Other regulatory assets |  |  | 1,094 |  |  |  | 68,703 |  |  |  | — |  |  |  | 58,189 |
Total regulatory assets |  | $ | 167,927 |  |  | $ | 855,099 |  |  | $ | 193,787 |  |  | $ | 833,328 |
Regulatory Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Income tax related liabilities |  | $ | 41,680 |  |  | $ | 357,812 |  |  | $ | 73,267 |  |  | $ | 390,734 |
Deferred natural gas costs |  |  | 6,599 |  |  |  | — |  |  |  | — |  |  |  | — |
Deferred power costs |  |  | — |  |  |  | 3,712 |  |  |  | — |  |  |  | — |
Decoupling rebate |  |  | 13,644 |  |  |  | 21,327 |  |  |  | 9,469 |  |  |  | 20,476 |
Utility plant retirement costs |  |  | — |  |  |  | 411,250 |  |  |  | — |  |  |  | 376,817 |
Interest rate swaps |  |  | — |  |  |  | 26,681 |  |  |  | — |  |  |  | 24,204 |
Deferred Climate Commitment Act revenues |  |  | — |  |  |  | 21,675 |  |  |  | — |  |  |  | — |
COVID-19 deferrals |  |  | — |  |  |  | 10,640 |  |  |  | — |  |  |  | 11,874 |
Other regulatory liabilities |  |  | 11,920 |  |  |  | 10,620 |  |  |  | 12,929 |  |  |  | 16,732 |
Total regulatory liabilities |  | $ | 73,843 |  |  | $ | 863,717 |  |  | $ | 95,665 |  |  | $ | 840,837 |

X
- Definition Schedule of net utility property. + References No definition available. + Details
Name: | ava_ScheduleOfNetUtilityPropertyTableTextBlock
Namespace Prefix: | ava_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of regulated asset and liability + References No definition available. + Details
Name: | ava_ScheduleOfRegulatedAssetAndLiabilityTableTextBlock
Namespace Prefix: | ava_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BalanceSheetRelatedDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of other current liabilities. + References No definition available. + Details
Name: | us-gaap_OtherCurrentLiabilitiesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of other noncurrent liabilities. + References No definition available. + Details
Name: | us-gaap_OtherNoncurrentLiabilitiesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(c)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483489/210-10-50-1 + Details
Name: | us-gaap_ScheduleOfInventoryCurrentTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of noncurrent assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_ScheduleOfOtherAssetsNoncurrentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the carrying amounts of other current assets. + References No definition available. + Details
Name: | us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration