Public Utilities, Disallowance Of Annual Amortization, Percentage

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- Definition

Recommended rate adjustment, annualized customer impact, cost deferrals

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- Definition

Recommended rate adjustment, annualized customer impact, disallowance of investments

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- Definition

Recommended Rate Adjustment, Annualized Customer Impact, Estimated Writeoff Of Cost Deferrals

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- Definition

Recommended Rate Adjustment, Property, Plant And Equipment, SCR Plant Investments, Net Of Deferred Taxes

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- Definition

Regulatory Asset, Net Book Value

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- Definition

Settlement agreement, ACC approved rate adjustment, annualized customer impact

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Regulatory Matters - Four Corners, Cholla and Navajo Plant (Details) - APS - USD ($) $ in Millions			1 Months Ended
	Aug. 02, 2021	Jun. 30, 2021	Sep. 30, 2018	Apr. 30, 2018
Subsequent Event \| Navajo Nation, Economic Development Organization \| Coal Community Transition Plan \| Retail Rate Case Filing with Arizona Corporation Commission \| ACC
Business Acquisition [Line Items]
Disallowance of annual amortization percentage	15.00%
SCE \| Four Corners Units 4 and 5
Business Acquisition [Line Items]
Settlement agreement, ACC approved rate adjustment, annualized customer impact			$ 58.5	$ 67.5
Estimated write-off of cost deferrals		$ 75.0
SCR plant investments		320.0
SCE \| Four Corners Units 4 and 5 \| Subsequent Event
Business Acquisition [Line Items]
Disallowance of plant investments	$ 399.0
Cost deferrals	$ 61.0
Retired power plant costs
Business Acquisition [Line Items]
Net book value		48.9
Navajo Plant
Business Acquisition [Line Items]
Net book value		67.0
Navajo Plant, Coal Reclamation Regulatory Asset
Business Acquisition [Line Items]
Net book value		$ 17.5