Debt Instrument, Basis Spread On Variable Rate, Change Intervals

No definition available.

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- Definition

Debt Instrument, Covenant, Ratio Of Funded Debt To Total Capitalization

+ References

No definition available.

+ Details

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- Definition

Debt Instrument Discount Rate

+ References

No definition available.

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- Definition

Debt Instrument, Floor Interest Rate

+ References

No definition available.

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- Definition

Debt Instrument, Mandatory Prepayment As Percentage Of Cash Proceeds Received

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Percentage Of Committed Amount Under Specific Acquisition Financings

+ References

No definition available.

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- Definition

Line Of Credit Facility, Amount Classified As Long-Term Debt

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Facility, Covenants, Increase In Maximum Net Leverage Ratio

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Facility, Covenants, Maximum, Net Leverage Ratio

+ References

No definition available.

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- Definition

Line Of Credit Facility, Covenants, Minimum, Interest Coverage Ratio

+ References

No definition available.

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- Definition

Line Of Credit Facility, Working Capital Purposes

+ 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.

+ Details

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- Definition

Amount of assets pledged to secure a debt instrument.

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- Definition

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

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+ Details

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- Definition

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

+ References

+ Details

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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.

+ Details

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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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

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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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

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Debt - Narratives (Details)		1 Months Ended	9 Months Ended
Debt - Narratives (Details)	Nov. 01, 2021 USD ($)	Mar. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2023	Dec. 31, 2022	Aug. 31, 2021	Aug. 27, 2021 USD ($)	Aug. 26, 2021 USD ($)	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Short term borrowings outstanding			$ 272,000,000						$ 107,000,000
Term Loan Facility \| Subsequent Event
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,600,000,000
Debt instrument, term	364 days
Change intervals of basis spread on variable rate	0.25%
Debt term, mandatory prepayment as percentage of cash proceeds received	100.00%
Debt term, percentage of committed amount under specific acquisition financings	100.00%
Minimum \| Term Loan Facility \| Subsequent Event
Debt Instrument [Line Items]
Commitment fee percentage	0.06%
Maximum \| Term Loan Facility \| Subsequent Event
Debt Instrument [Line Items]
Commitment fee percentage	0.175%
LIBOR \| Minimum \| Term Loan Facility \| Subsequent Event
Debt Instrument [Line Items]
Debt, basis spread on variable rate	0.75%
LIBOR \| Maximum \| Term Loan Facility \| Subsequent Event
Debt Instrument [Line Items]
Debt, basis spread on variable rate	1.50%
LIBOR \| Centuri term loan facility
Debt Instrument [Line Items]
Debt, basis spread on variable rate			2.50%
Term loan facility LIBOR floor			0.50%
Alternative base rate \| Minimum \| Term Loan Facility \| Subsequent Event
Debt Instrument [Line Items]
Debt, basis spread on variable rate	0.00%
Alternative base rate \| Maximum \| Term Loan Facility \| Subsequent Event
Debt Instrument [Line Items]
Debt, basis spread on variable rate	0.50%
Alternative base rate \| Centuri term loan facility
Debt Instrument [Line Items]
Debt, basis spread on variable rate			1.50%
Southwest Gas Corporation
Debt Instrument [Line Items]
Short term borrowings outstanding			$ 250,000,000						$ 57,000,000
Southwest Gas Corporation \| $250 Million Term Loan
Debt Instrument [Line Items]
Debt instrument, face amount		$ 250,000,000
Debt covenant, ratio of funded debt to total capitalization			0.70
Debt instrument, term		364 days
Southwest Gas Corporation \| Southwest Gas Credit Facility
Debt Instrument [Line Items]
Line of credit designated as long term debt			$ 150,000,000
Line of credit designated for working capital purposes			250,000,000
Long-term debt outstanding			0
Short term borrowings outstanding			0
Southwest Gas Corporation \| Commercial Paper Program
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			50,000,000
Borrowings outstanding under facility			$ 0
Southwest Gas Corporation \| Notes, 3.18%, due 2051 \| Debentures
Debt Instrument [Line Items]
Debt instrument interest rate			3.18%			3.18%
Debt instrument discount rate						0.019%
Southwest Gas Corporation \| LIBOR \| Minimum \| $250 Million Term Loan
Debt Instrument [Line Items]
Debt, basis spread on variable rate		0.55%
Southwest Gas Corporation \| LIBOR \| Maximum \| $250 Million Term Loan
Debt Instrument [Line Items]
Debt, basis spread on variable rate		1.00%
Southwest Gas Corporation \| LIBOR \| Southwest Gas Credit Facility
Debt Instrument [Line Items]
Debt, basis spread on variable rate			1.125%
Southwest Gas Corporation \| Alternative base rate \| $250 Million Term Loan
Debt Instrument [Line Items]
Debt, basis spread on variable rate		0.00%
Southwest Gas Corporation \| Alternative base rate \| Southwest Gas Credit Facility
Debt Instrument [Line Items]
Debt, basis spread on variable rate			0.125%
Centuri \| Secured Revolving Credit Facility and Term Loan
Debt Instrument [Line Items]
Borrowings outstanding under facility			$ 1,257,000,000
Debt secured by assets			2,600,000,000
Centuri \| Centuri term loan facility
Debt Instrument [Line Items]
Debt instrument, face amount							$ 1,145,000,000	$ 590,000,000
Centuri \| Centuri secured revolving credit facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity							$ 400,000,000
$400 Million Credit Facility \| Southwest Gas Corporation
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			400,000,000
$100 Million Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			100,000,000
Borrowings outstanding under facility			$ 22,000,000
Centuri secured revolving credit facility
Debt Instrument [Line Items]
Maximum total net leverage ratio			5.50
Increase the maximum total net leverage ratio			4.50
Minimum interest coverage ratio			2.50
Centuri secured revolving credit facility \| Forecast
Debt Instrument [Line Items]
Maximum total net leverage ratio				4.00	4.75
Centuri secured revolving credit facility \| Minimum
Debt Instrument [Line Items]
Commitment fee percentage			0.15%
Centuri secured revolving credit facility \| Maximum
Debt Instrument [Line Items]
Commitment fee percentage			0.35%
Centuri secured revolving credit facility \| LIBOR \| Minimum
Debt Instrument [Line Items]
Debt, basis spread on variable rate			1.00%
Centuri secured revolving credit facility \| LIBOR \| Maximum
Debt Instrument [Line Items]
Debt, basis spread on variable rate			2.25%
Centuri secured revolving credit facility \| Alternative base rate \| Minimum
Debt Instrument [Line Items]
Debt, basis spread on variable rate			0.00%
Centuri secured revolving credit facility \| Alternative base rate \| Maximum
Debt Instrument [Line Items]
Debt, basis spread on variable rate			1.25%
Centuri secured revolving credit facility \| Centuri
Debt Instrument [Line Items]
Debt instrument discount rate							1.00%