Cover |
Apr. 29, 2026 |
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| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Apr. 29, 2026 |
| Entity Registrant Name | Stonepeak-Plus Infrastructure Fund LP |
| Entity Incorporation, State or Country Code | DE |
| Securities Act File Number | 000-56711 |
| Entity Tax Identification Number | 33-1582934 |
| Entity Address, Address Line One | 55 Hudson Yards |
| Entity Address, Address Line Two | 550 W 34th Street |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10001 |
| City Area Code | 212 |
| Local Phone Number | 907-5100 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Amendment Flag | false |
| Entity Central Index Key | 0002045458 |
| Current Fiscal Year End Date | --12-31 |
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