XML 172 R137.htm IDEA: XBRL DOCUMENT v3.22.4

Regulatory Matters - Schedule of Decoupling and Earnings Sharing Mechanisms (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
WASHINGTON | Decoupling (Rebate) Surcharge [Member]
Scheduleof Decouplingand Earnings Sharing [Line Items]
Regulatory assets		$ 13,522,000
Regulatory Liabilities	$ (13,210,000)
WASHINGTON | Revenue Subject to Refund [Member]
Scheduleof Decouplingand Earnings Sharing [Line Items]
Regulatory Liabilities	0	0
IDAHO | Decoupling (Rebate) Surcharge [Member]
Scheduleof Decouplingand Earnings Sharing [Line Items]
Regulatory Liabilities	(7,889,000)	(1,450,000)
IDAHO | Revenue Subject to Refund [Member]
Scheduleof Decouplingand Earnings Sharing [Line Items]
Regulatory Liabilities	(686,000)	(686,000)
OREGON | Decoupling (Rebate) Surcharge [Member]
Scheduleof Decouplingand Earnings Sharing [Line Items]
Regulatory assets	2,853,000	3,152,000
OREGON | Revenue Subject to Refund [Member]
Scheduleof Decouplingand Earnings Sharing [Line Items]
Regulatory Liabilities	$ 0	$ 0

X

- Definition

[Line Items] for Schedule of Decoupling and Earnings Sharing [Table]

+ References

No definition available.

+ Details

Name:	ava_ScheduleofDecouplingandEarningsSharingLineItems
Namespace Prefix:	ava_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 340
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382

+ Details

Name:	us-gaap_RegulatoryAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 405
-Section 25
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394

+ Details

Name:	us-gaap_RegulatoryLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_StatutoryAccountingPracticesByJurisdictionAxis=stpr_WA
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RegulatoryAssetAxis=ava_DecouplingSurchargeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RegulatoryLiabilityAxis=us-gaap_RevenueSubjectToRefundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatutoryAccountingPracticesByJurisdictionAxis=stpr_ID
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatutoryAccountingPracticesByJurisdictionAxis=stpr_OR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: