Additional Debt Issuable

No definition available.

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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

Percentage of property additions

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- Definition

Remarketing Agreement to Remarket, Number of Series

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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.

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

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- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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The number of equity instruments that the holder of the debt instrument would receive if the debt was converted to equity.

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- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

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- Definition

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

+ References

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- Definition

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

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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

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

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- Definition

The cash inflow from amounts received from issuance of long-term tax exempt debt that is wholly or partially secured by collateral.

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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) $ / shares in Units, $ in Millions				1 Months Ended		12 Months Ended
	Dec. 15, 2023	Aug. 01, 2023 $ / shares	Jan. 17, 2023 USD ($)	Jul. 31, 2023 USD ($) numberOfSeries	Apr. 30, 2023 USD ($) numberOfSeries	Dec. 31, 2023 USD ($) shares
Debt Instrument [Line Items]
Debt instrument, convertible, conversion ratio		27.1278
Conversion price percentage		25.00%
Long-term Debt
Debt Instrument [Line Items]
Principal amount of debt issued						$ 3,023
Maximum
Debt Instrument [Line Items]
Debt instrument, convertible, conversion ratio						33.9097
Debt instrument, convertible, number of equity instruments (in shares) \| shares						33,909,700
Convertible Debt
Debt Instrument [Line Items]
Debt instrument, convertible, conversion price (in dollar per shares) \| $ / shares		$ 36.86
Debt instrument, redemption price (as a percent)		100.00%
CERC Floating Rate Senior Notes Zero Point Six Five Percentage Due 2024 \| Senior Notes \| Long-term Debt
Debt Instrument [Line Items]
Principal amount of debt issued						$ 350
Debt instrument, redemption price (as a percent)	100.00%
SIGECO
Debt Instrument [Line Items]
Remarketing Agreement to Remarket, Number of Series \| numberOfSeries				2	5
Proceeds from Issuance of Secured Tax Exempt Debt				$ 38	$ 148
Percentage of property additions						70.00%
Long-term debt, gross						$ 847
Additional debt issuable						966
SIGECO \| Environmental Improvement Revenue Bonds, Series 2013
Debt Instrument [Line Items]
Principal amount of debt issued					107
SIGECO \| Environmental Improvement Revenue Bonds, Series 2014
Debt Instrument [Line Items]
Principal amount of debt issued					$ 41
SIGECO \| Environmental Improvement Revenue Bonds, Series 2015
Debt Instrument [Line Items]
Debt instrument interest rate (as a percent)				4.25%
SIGECO \| CNP First Mortgage Bonds 4.00% Due 2044 \| First Mortgage Bonds \| Long-term Debt
Debt Instrument [Line Items]
Principal amount of debt issued			$ 11			$ 11
Debt instrument interest rate (as a percent)						4.00%
Debt instrument, redemption price (as a percent)			100.00%
SIGECO \| Mount Vernon \| Environmental Improvement Revenue Bonds, Series 2015
Debt Instrument [Line Items]
Principal amount of debt issued				$ 23
SIGECO \| Warrick County \| Environmental Improvement Revenue Bonds, Series 2015
Debt Instrument [Line Items]
Principal amount of debt issued				$ 15
Houston Electric
Debt Instrument [Line Items]
Additional first mortgage bonds and general mortgage bonds that could be issued						$ 4,800
Houston Electric \| General mortgage bonds, 2.35% to 6.95%, due 2026 to 2053
Debt Instrument [Line Items]
Secured Debt						$ 7,600
Houston Electric \| General mortgage bonds, 2.35% to 6.95%, due 2026 to 2053 \| 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						$ 68
Percentage of property additions						70.00%