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Revenue (Tables)

12 Months Ended

Dec. 31, 2024

Revenue from Contract with Customer [Abstract]

Unbilled Accounts Receivable

Accounts receivable includes unbilled energy revenues of the following amounts as of December 31 (dollars in millions):

		2024				2023
Unbilled accounts receivable		$	75			$	79

Schedule of Utilities Operating Revenue Expense Taxes

Utility-related taxes included in revenue from contracts with customers were as follows for the years ended December 31 (dollars in millions):

		2024				2023				2022
Utility-related taxes		$	81			$	75			$	70

Disaggregation of Revenue

Disaggregation of Total Operating Revenue

The following table disaggregates total operating revenue by segment and source for the years ended December 31 (dollars in millions):

		2024				2023				2022
Avista Utilities
Revenue from contracts with customers		$	1,570			$	1,486			$	1,400
Derivative revenues			249				199				286
Alternative revenue programs			35				5				(34	)
Other utility revenues			33				13				11
Total Avista Utilities			1,887				1,703				1,663
AEL&P
Revenue from contracts with customers			49				47				46
Other utility revenues			1				1				—
Total AEL&P			50				48				46
Other
Other revenues			1				1				1
Total operating revenues		$	1,938			$	1,752			$	1,710

Utility Revenue from Contracts with Customers by Type and Service

The following table disaggregates revenue from contracts with customers associated with the Company's electric operations for the years ended December 31 (dollars in millions):

		2024												2023												2022
		Avista Utilities				AEL&P				Total Utility				Avista Utilities				AEL&P				Total Utility				Avista Utilities				AEL&P				Total Utility
ELECTRIC OPERATIONS
Revenue from    contracts with    customers
Residential		$	473			$	22			$	495			$	425			$	20			$	445			$	415			$	20			$	435
Commercial and    governmental			369				27				396				344				27				371				339				26				365
Industrial			131				—				131				110				—				110				108				—				108
Public street and    highway lighting			9				—				9				8				—				8				7				—				7
Total retail    revenue			982				49				1,031				887				47				934				869				46				915
Transmission			38				—				38				33				—				33				32				—				32
Other revenue from    contracts with    customers			40				—				40				45				—				45				50				—				50
Total revenue    from contracts    with customers		$	1,060			$	49			$	1,109			$	965			$	47			$	1,012			$	951			$	46			$	997

The following table disaggregates revenue from contracts with customers associated with the Company's natural gas operations for the years ended December 31 (dollars in millions):

		2024				2023				2022
		Avista Utilities				Avista Utilities				Avista Utilities
NATURAL GAS OPERATIONS
Revenue from contracts with customers
Residential		$	317			$	326			$	284
Commercial			163				164				140
Industrial and interruptible			13				17				10
Total retail revenue			493				507				434
Transportation			11				8				9
Other revenue from contracts with customers			6				6				6
Total revenue from contracts with customers		$	510			$	521			$	449

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Unbilled accounts receivable.

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Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-5

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