Public Utilities, Effective Fair Value Rate, Percentage

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- Definition

Public Utilities, Increment of Fair Value Rate, Percentage

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- Definition

Public Utilities, Requested Increase (Decrease) In Deadband

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- Definition

Public Utilities, Requested Net Revenue Requirement Increase (Decrease), Amount

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- Definition

Public Utilities, Requested Period Of Post-Test Year Plant

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- Definition

Public Utilities, Requested Projected Plant Duration

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- Definition

Public Utilities, Requested Review And Challenge Period

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- Definition

Public Utilities, Test Period

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- Definition

Rate Matter, Cost Base Rate

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- Definition

Regulatory Impact, Total Revenue Deficiency

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Regulatory Matters, Base Fuel And Purchased Power Costs Rate

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- Definition

Amount of public utility's approved rate increase (decrease) by regulatory agency.

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- Definition

Percentage of public utility's approved return on equity.

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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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Amount of public utility's requested rate increase (decrease) with regulatory agency.

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- Definition

Percentage of public utility's requested rate increase (decrease) with regulatory agency.

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Percentage of public utility's requested return on equity.

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Regulatory Matters - ACC General Retail Rate Cases (Details) $ in Millions	May 11, 2026 USD ($)	May 01, 2026 USD ($)	Apr. 03, 2026 USD ($)	Mar. 18, 2026 USD ($)	Mar. 02, 2026 USD ($)	Jun. 13, 2025 USD ($) $ / KWH_Kilowatt_hour	Feb. 22, 2024 USD ($)	Apr. 02, 2026
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount		$ 506.5		$ 525.2
Increment of fair value rate, percentage					0.00%
Requested period of post-test year plant				12 months
Requested increase (decrease) in deadband		0.0050
Approved rate increase (decrease), amount							$ 491.7
Minimum
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount					$ 200.2
Requested return on equity, percentage				9.55%	9.00%
Requested period of post-test year plant					0 months
Maximum
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount					$ 278.1
Requested return on equity, percentage				9.80%	9.20%
Requested period of post-test year plant					12 months
APS
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount	$ 691.6		$ 694.2
Requested return on equity, percentage			10.70%
Increment of fair value rate, percentage			0.90%					1.00%
Requested period of post-test year plant			12 months
Requested net revenue requirement increase (decrease), amount	$ 608.7		$ 611.3
Requested increase (decrease) in deadband			0.0040
Requested projected plant duration			6 months
Requested review and challenge period			120 days
ACC
Public Utilities, General Disclosures [Line Items]
Increment of fair value rate, percentage				0.20%			0.25%
Approved return on equity, percentage							9.55%
ACC \| APS
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount						$ 579.5
Total revenue deficiency						$ 662.4
ACC \| APS \| Rate Case Filing with Arizona Corporation Commission
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), percentage						13.99%
Public utilities, test period						12 months
Rate matter, cost base rate						$ 12,500.0
Effective fair value percentage							4.39%
ACC \| ACC \| Rate Case Filing with Arizona Corporation Commission
Public Utilities, General Disclosures [Line Items]
Base fuel and purchased power costs rate (in dollars per kWh) \| $ / KWH_Kilowatt_hour						0.043881