Line Of Credit Facility, Number Of Banks In Agreement

No definition available.

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- Definition

Line of credit debt covenant required earnings before interest, taxes, depreciation, and amortization (EBITDA) minimum times interest expense

+ References

No definition available.

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- Definition

Short-term borrowings used to support lending to Utilities

+ References

No definition available.

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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

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

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- Definition

Amount of the fee that accompanies borrowing money under the debt instrument.

+ References

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- Definition

The average effective interest rate during the reporting period.

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- Definition

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

+ References

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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.

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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

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

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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

Indebtedness divided by net capital.

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No definition available.

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Notes Payable and Credit Agreements - Additional Information (Details)			12 Months Ended
	Mar. 23, 2021 USD ($)	Mar. 26, 2020 USD ($) bank	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Dec. 14, 2016 bank
Line of Credit Facility [Line Items]
Long-term debt			$ 975,000,000.0
Credit facility borrowings			$ 0	$ 0
Liabilities \| Lender Concentration Risk
Line of Credit Facility [Line Items]
Line of credit facility, number of banks in agreement \| bank					11
Spire
Line of Credit Facility [Line Items]
Term loan bear interest rate per annum			0.40%
Short-term borrowings used to support lending to Utilities			$ 348,500,000
Spire \| Term Loan
Line of Credit Facility [Line Items]
Line of credit facility, number of banks in agreement \| bank		2
Long-term debt		$ 150,000,000.0
Team loan interest rate description			The term loan bore interest at the LIBOR Rate (as defined in the loan agreement) plus 0.85% per annum.
Term loan bear interest rate per annum			1.10%
Spire \| Term Loan \| LIBOR
Line of Credit Facility [Line Items]
Term loan bear interest rate per annum		0.85%
Spire Missouri \| Term Loan
Line of Credit Facility [Line Items]
Term loan bear interest rate per annum			0.70%
Revolving Credit Facility Borrowings
Line of Credit Facility [Line Items]
Line of credit facility borrowing capacity			$ 975,000,000.0
Minimum required ratio of earnings before interest, taxes, depreciation, and amortization (EBITDA) times interest expense as required by the line of credit covenant			70.00%
Revolving Credit Facility Borrowings \| Maximum
Line of Credit Facility [Line Items]
Debt to total capitalization ratio			0.60
Revolving Credit Facility Borrowings \| Spire
Line of Credit Facility [Line Items]
Line of credit facility borrowing capacity			$ 300,000,000.0
Revolving Credit Facility Borrowings \| Spire Missouri
Line of Credit Facility [Line Items]
Line of credit facility borrowing capacity			475,000,000.0
Revolving Credit Facility Borrowings \| Spire Alabama
Line of Credit Facility [Line Items]
Line of credit facility borrowing capacity			200,000,000.0
Commercial Paper Notes
Line of Credit Facility [Line Items]
Debt amount			$ 975,000,000.0
Debt term			365 days
Commercial Paper Notes \| Spire
Line of Credit Facility [Line Items]
Term loan bear interest rate per annum			0.20%
Unsecured Term Loan \| Spire Missouri
Line of Credit Facility [Line Items]
Debt amount	$ 250,000,000.0
Debt term	364 days
Prepayment penalty	$ 0
Unsecured Term Loan \| Spire Missouri \| LIBOR
Line of Credit Facility [Line Items]
Interest rate	65.00%