Consecutive Period for System Restoration Costs to Exceed $100 million (in months)

No definition available.

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- Definition

Letters of credit swing line sublimit

+ References

No definition available.

+ Details

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- Definition

Percentage on limitation of debt to total capitalization under covenant.

+ References

No definition available.

+ Details

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- Definition

Temporary increased percentage on limitation of debt to total capitalization under covenant (in hundredths)

+ References

No definition available.

+ Details

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- Definition

Restoration Costs

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

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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

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Indebtedness divided by net capital.

+ References

No definition available.

+ Details

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Short-term Borrowings and Long-term Debt - Schedule of Revolving Credit Facilities (Details) $ in Millions	6 Months Ended
	Jun. 30, 2021 USD ($)	Feb. 28, 2021 USD ($)	Jan. 31, 2021 USD ($)
Debt Instrument [Line Items]
Size of credit facility	$ 4,000
Houston Electric
Debt Instrument [Line Items]
Size of credit facility	300
Restoration costs	100
CERC Corp
Debt Instrument [Line Items]
Size of credit facility	$ 900
Line of Credit
Debt Instrument [Line Items]
Consecutive period for system restoration costs to exceed $100 million (in months)	12 months
Line of Credit \| Maximum
Debt Instrument [Line Items]
Percentage on limitation of debt to total capitalization under covenant amended (in hundredths)	70.00%
Line of Credit \| Houston Electric
Debt Instrument [Line Items]
Percentage on limitation of debt to total capitalization under covenant (in hundredths)	67.50%
Ratio of indebtedness to net capital (as a percent)	0.558
Line of Credit \| Houston Electric \| Maximum
Debt Instrument [Line Items]
Percentage on limitation of debt to total capitalization under covenant amended (in hundredths)	70.00%
Line of Credit \| CERC Corp
Debt Instrument [Line Items]
Percentage on limitation of debt to total capitalization under covenant (in hundredths)	65.00%
Ratio of indebtedness to net capital (as a percent)	0.610
Line of Credit \| London Interbank Offered Rate (LIBOR) \| Houston Electric
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.375%
Line of Credit \| London Interbank Offered Rate (LIBOR) \| CERC Corp
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.25%
Parent Company
Debt Instrument [Line Items]
Size of credit facility	$ 2,400	$ 2,400	$ 3,300
Parent Company \| Line of Credit
Debt Instrument [Line Items]
Percentage on limitation of debt to total capitalization under covenant (in hundredths)	65.00%
Ratio of indebtedness to net capital (as a percent)	0.577
Parent Company \| Line of Credit \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.625%
VUHI
Debt Instrument [Line Items]
Size of credit facility	$ 400
Letters of credit swing line sublimit	$ 20
VUHI \| Line of Credit
Debt Instrument [Line Items]
Percentage on limitation of debt to total capitalization under covenant (in hundredths)	65.00%
Ratio of indebtedness to net capital (as a percent)	0.501
VUHI \| Line of Credit \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.25%