Additional Debt Issuable

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- Definition

Amount of additional first mortgage bonds and general mortgage bonds that could be issued on the basis of retired bonds and 70% of property additions as of the balance sheet date.

+ References

No definition available.

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- Definition

Debt Instrument, Basis Spread On Variable Rate, Adjustment

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- Definition

Line Of Credit Facility Restated Amount

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No definition available.

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- Definition

Number Of Credit Facilities

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No definition available.

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- Definition

Percentage of property additions

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No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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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.

+ References

No definition available.

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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Short-term Borrowings and Long-term Debt - Narrative (Details)					12 Months Ended
	Feb. 16, 2023 USD ($)	Jan. 17, 2023 USD ($)	Dec. 06, 2022 USD ($) credit_facility	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) credit_facility	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Oct. 05, 2022 USD ($)	Sep. 06, 2022 USD ($)	May 27, 2022 USD ($)
Debt Instrument [Line Items]
Gain (loss) on early extinguishment of debt					$ 47,000,000	$ 53,000,000	$ 2,000,000
Number of credit facilities \| credit_facility			3		4
Long-term debt					$ 14,836,000,000	15,558,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Loans					0	0
Letter of Credit
Debt Instrument [Line Items]
Loans					11,000,000	11,000,000
Vectren \| Maximum \| Letter of Credit
Debt Instrument [Line Items]
Loans					20,000,000
SIGECO \| Letter of Credit
Debt Instrument [Line Items]
Loans					1,000,000
CERC Corp
Debt Instrument [Line Items]
Gain (loss) on early extinguishment of debt					0	11,000,000	$ 2,000,000
Long-term debt					3,495,000,000	5,552,000,000
CERC Corp \| Revolving Credit Facility
Debt Instrument [Line Items]
Loans					0	0
CERC Corp \| Letter of Credit
Debt Instrument [Line Items]
Loans					0	0
VUH
Debt Instrument [Line Items]
Line of credit facility restated amount				$ 400,000,000
Houston Electric
Debt Instrument [Line Items]
Gain (loss) on early extinguishment of debt					(2,000,000)
Long-term debt					6,197,000,000	4,975,000,000
Additional first mortgage bonds and general mortgage bonds that could be issued					4,900,000,000
Houston Electric \| Revolving Credit Facility
Debt Instrument [Line Items]
Loans					0	0
Houston Electric \| Letter of Credit
Debt Instrument [Line Items]
Loans					0	0
Houston Electric \| Bonds General Mortgage Due Range 1
Debt Instrument [Line Items]
Secured debt amount with asset liens					$ 6,200,000,000
Houston Electric \| Bonds General Mortgage Due Range 1 \| Maximum
Debt Instrument [Line Items]
Debt instrument interest rate (as a percent)					6.95%
Houston Electric \| Bonds Pollution Control Due
Debt Instrument [Line Items]
Secured debt amount with asset liens					$ 68,000,000
Percentage of property additions					70.00%
Southern Indiana Gas and Electric \| Subsequent Event
Debt Instrument [Line Items]
Long-term debt, gross		$ 11,000,000
Debt instrument, redemption price (as a percent)		100.00%
SIGECO
Debt Instrument [Line Items]
Percentage of property additions					60.00%
Long-term debt, gross					$ 288,000,000
Additional debt issuable					1,400,000,000
SIGECO \| Revolving Credit Facility
Debt Instrument [Line Items]
Loans					0	0
SIGECO \| Letter of Credit
Debt Instrument [Line Items]
Loans					0	$ 0
Credit Facility \| Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt			$ 3,750,000,000		$ 4,000,000,000
Credit Facility \| Southern Indiana Gas and Electric \| Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt			$ 250,000,000
CERC Corp. Senior Notes \| CERC Corp
Debt Instrument [Line Items]
Principal amount of debt issued										$ 302,000,000
VUH PPNs \| VUH
Debt Instrument [Line Items]
Principal amount of debt issued										$ 302,000,000
Debt instrument interest rate (as a percent)									6.10%
VUHI PPNs \| VUH
Debt Instrument [Line Items]
Repayments of debt				$ 302,000,000
CERC Senior Notes 6.10% due 2035 \| CERC Corp
Debt Instrument [Line Items]
Principal amount of debt issued								$ 75,000,000	$ 75,000,000
Debt instrument interest rate (as a percent)								6.10%
CERC Term Loan Due 2024 \| CERC Corp \| Term Loan \| Subsequent Event
Debt Instrument [Line Items]
Principal amount of debt issued	$ 500,000,000
Proceeds from issuance of debt	$ 500,000,000
CERC Term Loan Due 2024 \| CERC Corp \| Term Loan \| Subsequent Event \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Basis spread (as a percent)	0.85%
Adjustment to basis spread (as a percent)	0.10%