Regulatory Matters - Capital Structure and Costs of Capital (Details) - APS	Oct. 28, 2022
Cost of Capital
Requested Long-term debt cost of capital, percentage	3.85%
Requested equity cost of capital, percentage	10.25%
Requested weighted average cost of capital, percentage	7.17%
Retail Rate Case Filing with Arizona Corporation Commission
Capital Structure
Requested equity capital structure, percentage	51.93%
Retail Rate Case Filing with Arizona Corporation Commission \| ACC
Capital Structure
Requested debt capital structure, percentage	48.07%

Capital Structure [Abstract]

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Cost Of Capital [Abstract]

No definition available.

Public Utilities, Requested Equity Cost Of Capital, Percentage

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Public Utilities, Requested Long-Term Debt Cost Of Capital, Percentage

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Public Utilities, Requested Weighted Average Cost Of Capital, Percentage

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Percentage of public utility's requested debt to capital, including debt and equity.

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Percentage of public utility's requested equity to capital, including debt and equity.

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