| Submission | Aug. 09, 2024 |
| Submission [Line Items] | |
| Central Index Key | 0001733998 |
| Registrant Name | Northwest Natural Holding Company |
| Form Type | S-3 |
| Submission Type | S-3ASR |
| Fee Exhibit Type | EX-FILING FEES |
| Offerings | Aug. 09, 2024 USD ($) |
| Offering: 1 | |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Debt |
| Security Class Title | Northwest Natural HoldingCompany Debt Securities |
| Offering Note | An unspecified aggregate offering of the securities is being registered as may from time to time be offered by the registrant at unspecified prices, along with an indeterminate number of securities that may be issued upon exercise, settlement, exchange or conversion of securities offered hereunder. Separate consideration may or may not be received for securities that are issuable upon exercise, settlement, conversion or exchange of other securities. Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (“ Securities Act |
| Offering: 2 | |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Debt |
| Security Class Title | Northwest Natural HoldingCompany Junior SubordinatedDebentures |
| Offering Note | Please see offering note (1). |
| Offering: 3 | |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Equity |
| Security Class Title | Northwest Natural HoldingCompany Preferred Stock, nopar value |
| Offering Note | Please see offering note (1). |
| Offering: 4 | |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Equity |
| Security Class Title | Northwest Natural HoldingCompany Common Stock, nopar value |
| Offering Note | Please see offering note (1). |
| Offering: 5 | |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Debt |
| Security Class Title | Northwest Natural GasCompany Debt Securities |
| Offering Note | Please see offering note (1). |
| Offering: 6 | |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Equity |
| Security Class Title | Northwest Natural GasCompany Preferred Stock, nopar value |
| Offering Note | Please see offering note (1). |
| Offering: 7 | |
| Offering: | |
| Rule 415(a)(6) | true |
| Security Type | Equity |
| Security Class Title | Northwest Natural HoldingCompany Common Stock, nopar value (for issuance under theNorthwest Natural HoldingCompany DividendReinvestment and Direct StockPurchase Plan) |
| Amount Registered | 285,060 |
| Maximum Aggregate Offering Price | $ 285,060 |
| Carry Forward Form Type | S-3 |
| Carry Forward File Number | 333-258792 |
| Carry Forward Initial Effective Date | Aug. 13, 2021 |
| Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward | $ 2,721.46 |
| Offering Note | Pursuant to Rule 415(a)(6) under the Securities Act, the securities registered pursuant to this Registration Statement include 285,060 unsold shares of Northwest Natural Holding Company’s common stock (“ Unsold Shares S-3 No. 333-227662), Initial Registration Statement S-3 No. 333-258792), Second Registration Statement Second Fee |
| Fees Summary | Aug. 09, 2024 USD ($) |
| Fees Summary [Line Items] | |
| Total Offering | $ 285,060 |
| Previously Paid Amount | 0 |
| Total Fee Amount | 0 |
| Total Offset Amount | 0 |
| Net Fee | $ 0 |
