| Document and Entity Information | Dec. 08, 2022 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Dec. 08, 2022 |
| Entity Registrant Name | BIG SKY GROWTH PARTNERS, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-40313 |
| Entity Tax Identification Number | 86-2084915 |
| Entity Address, Address Line One | 1201 Western Avenue, Suite 406 |
| Entity Address, City or Town | Seattle |
| Entity Address, State or Province | WA |
| Entity Address, Postal Zip Code | 98101 |
| City Area Code | 406 |
| Local Phone Number | 351-0820 |
| 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 | 0001846804 |
| Units, each consisting of one share of Class A common stock, and one-fourth of one redeemable Warrant to acquire one share of Class A common stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Units, each consisting of one share of Class A common stock, and one-fourth of one redeemable Warrant to acquire one share of Class A common stock |
| Trading Symbol | BSKYU |
| Security Exchange Name | NASDAQ |
| Class A common stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A common stock, par value $0.0001 per share |
| Trading Symbol | BSKY |
| Security Exchange Name | NASDAQ |
| Warrant [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Redeemable Warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50 |
| Trading Symbol | BSKYW |
| Security Exchange Name | NASDAQ |
