Debt Instrument Covenant Consolidated Indebtedness to Capitalization Ratio

No definition available.

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- Definition

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

+ References

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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

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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- Definition

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

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+ Details

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- Definition

Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
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- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

+ References

No definition available.

+ Details

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Indebtedness divided by net capital.

+ References

No definition available.

+ Details

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- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

No definition available.

+ Details

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Long-Term Debt - USD ($)	9 Months Ended
Long-Term Debt - USD ($)	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Debt Instrument [Line Items]
Long-term Debt	$ 1,337,620,000	$ 1,044,932,000	$ 916,304,000
Unamortized debt issuance costs	$ 8,348,000	8,309,000	7,051,000
Ratio of Indebtedness to Net Capital	0.569
Northwest Natural Gas Company [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 1,126,471,000	986,495,000	857,760,000
Unamortized debt issuance costs	$ 8,229,000	$ 8,205,000	$ 6,940,000
Weighted average interest rate	4.50%
Long-Term Debt, Maturity, Year One	$ 50,000,000
Northwest Natural Gas Company [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Stated interest rate	2.80%
Northwest Natural Gas Company [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Stated interest rate	7.90%
Five-year Term Loan Due 2026
Debt Instrument [Line Items]
Stated interest rate	3.50%
Long-term Debt, Term	5 years
Proceeds from Issuance of Debt	$ 55,000,000
Debt Instrument Covenant Consolidated Indebtedness to Capitalization Ratio	70.00%
18 Month Credit Agreement Due March 15, 2024
Debt Instrument [Line Items]
Stated interest rate	4.10%
Long-term Debt, Term	18 months
Proceeds from Issuance of Debt	$ 100,000,000
Debt Instrument Covenant Consolidated Indebtedness to Capitalization Ratio	70.00%
18 Month Credit Agreement Due March 15, 2024 \| NWN Water
Debt Instrument [Line Items]
Stated interest rate	4.10%
Long-term Debt, Term	18 months
Proceeds from Issuance of Debt	$ 50,000,000
Debt Instrument Covenant Consolidated Indebtedness to Capitalization Ratio	70.00%
First Mortgage Bonds 4.8 Percent Series Due 2052 \| Northwest Natural Gas Company [Member]
Debt Instrument [Line Items]
Stated interest rate	4.80%
Proceeds from Issuance of Debt	$ 140,000,000
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	100.00%