| Submission | Oct. 29, 2024 |
| Submission [Line Items] | |
| Central Index Key | 0000766829 |
| Registrant Name | SJW GROUP |
| Form Type | S-3 |
| Submission Type | S-3ASR |
| Fee Exhibit Type | EX-FILING FEES |
| Offerings | Oct. 29, 2024 |
| Offering: 1 | |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Equity |
| Security Class Title | Common Stock, $0.001 par value |
| Fee Rate | 0.01531% |
| Offering Note | (a) The Registrant is relying on Rule 456(b) and Rule 457(r) under the Securities Act of 1933, as amended, to defer payment of all of the registration fee and will pay any applicable registration fees on a "pay as you go" basis. The Registrant will calculate the registration fee applicable to an offer of securities hereunder based on the fee payment rate in effect on the date of such fee payment. (b) An indeterminate number and amount of securities to be offered at indeterminate prices is being registered pursuant to this registration statement, and may be issued upon conversion, redemption, exchange, exercise or settlement of any securities registered hereunder, including under any applicable antidilution provisions. |
| Offering: 2 | |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Equity |
| Security Class Title | Preferred Stock |
| Fee Rate | 0.01531% |
| Offering Note | See footnote 1(a) and 1(b). |
| Offering: 3 | |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Debt |
| Security Class Title | Debt Securities |
| Fee Rate | 0.01531% |
| Offering Note | See footnote 1(a) and 1(b). |
| Offering: 4 | |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Other |
| Security Class Title | Depositary Shares |
| Fee Rate | 0.01531% |
| Offering Note | See footnote 1(a) and 1(b). |
| Offering: 5 | |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Other |
| Security Class Title | Warrants |
| Fee Rate | 0.01531% |
| Offering Note | See footnote 1(a) and 1(b). |
| Offering: 6 | |
| Offering: | |
| Fee Previously Paid | false |
| Rule 457(r) | true |
| Security Type | Other |
| Security Class Title | Units |
| Fee Rate | 0.01531% |
| Offering Note | See footnote 1(a) and 1(b). |
| Fees Summary | Oct. 29, 2024 USD ($) |
| Fees Summary [Line Items] | |
| Total Offering | $ 0 |
| Previously Paid Amount | 0 |
| Total Fee Amount | 0 |
| Total Offset Amount | 0 |
| Net Fee | $ 0 |
