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- Definition

Infrastructure Replacement Program, Approved Investment Variance Amount

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- Definition

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- Definition

Public Utilities, Approved Annual Recovery of Capital Investment

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- Definition

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

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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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- Definition

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

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Regulatory Matters - Southern Company Gas (Details) - USD ($) $ in Millions	Aug. 01, 2024	Jul. 31, 2024	Jul. 02, 2024	Jun. 07, 2024
SOUTHERN Co GAS \| SAVE
Public Utilities, General Disclosures [Line Items]
Approved investment amount				$ 355
Approved investment variance amount				$ 5
Program duration period				5 years
SOUTHERN Co GAS \| SAVE \| 2025
Public Utilities, General Disclosures [Line Items]
Approved investment amount				$ 70
SOUTHERN Co GAS \| SAVE \| 2026
Public Utilities, General Disclosures [Line Items]
Approved investment amount				70
SOUTHERN Co GAS \| SAVE \| 2027
Public Utilities, General Disclosures [Line Items]
Approved investment amount				70
SOUTHERN Co GAS \| SAVE \| 2028
Public Utilities, General Disclosures [Line Items]
Approved investment amount				70
SOUTHERN Co GAS \| SAVE \| 2029
Public Utilities, General Disclosures [Line Items]
Approved investment amount				$ 70
Atlanta Gas Light
Public Utilities, General Disclosures [Line Items]
Recovery of capital investments			$ 600
Approved rate increase (decrease)		$ 120
Virginia Natural Gas \| Virginia Commission
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease) amount	$ 63
Public utilities, approved return on equity percentage	10.45%
Public utilities, approved equity capital structure percentage	54.92%
Virginia Natural Gas \| SAVE \| Virginia Commission
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease) amount	$ 17