Ratio of total debt to total capitalization as specified in debt covenants

No definition available.

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- Definition

The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-15

+ Details

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481372/852-10-55-10

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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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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Short-term Debt (Details 1) - USD ($) $ in Thousands				9 Months Ended
Short-term Debt (Details 1) - USD ($) $ in Thousands	May 31, 2023	Apr. 30, 2023	Mar. 31, 2023	Sep. 30, 2023	Sep. 30, 2022	May 01, 2023	Mar. 17, 2023	Jan. 20, 2023	Dec. 31, 2022	Dec. 19, 2022
Short-Term Debt [Line Items]
Short-term borrowings				$ 306,400	$ 0				$ 38,500
Repayment of short-term borrowings				193,500	$ 0
Term Loan Agreement \| Cascade Natural Gas [Member]
Short-Term Debt [Line Items]
Short-term borrowings								$ 150,000
Ratio of total debt to total capitalization as specified in debt covenants								65.00%
Term Loan Agreement \| Intermountain Gas Company
Short-Term Debt [Line Items]
Short-term borrowings								$ 125,000
Ratio of total debt to total capitalization as specified in debt covenants								65.00%
Repayment of short-term borrowings	$ 30,000	$ 30,000	$ 20,000
Term Loan Agreement \| Centennial Energy Holdings, Inc.
Short-Term Debt [Line Items]
Short-term borrowings							$ 100,000			$ 135,000
Term Loan Agreement \| Centennial Energy Holdings, Inc. \| Maximum [Member]
Short-Term Debt [Line Items]
Repayment of short-term borrowings	135,000
Term Loan Agreement \| Centennial Energy Holdings, Inc. \| Minimum [Member]
Short-Term Debt [Line Items]
Repayment of short-term borrowings	100,000
Term Loan Agreement \| MDU Resources Group, Inc.
Short-Term Debt [Line Items]
Short-term borrowings						$ 75,000
Repayment of short-term borrowings	75,000
Revolving Credit Facility \| MDU Resources Group, Inc.
Short-Term Debt [Line Items]
Short-term borrowings	$ 150,000
Ratio of total debt to total capitalization as specified in debt covenants	65.00%
Revolving Credit Agreement, Amount Outstanding \| MDU Resources Group, Inc.
Short-Term Debt [Line Items]
Short-term borrowings				$ 111,400