| Cover | Apr. 14, 2023 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Apr. 14, 2023 |
| Entity File Number | 001-40940 |
| Entity Registrant Name | ACCRETION ACQUISITION CORP. |
| Entity Central Index Key | 0001855555 |
| Entity Tax Identification Number | 86-2332228 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 240 Saint Paul |
| Entity Address, Address Line Two | Suite 502 |
| Entity Address, City or Town | Denver |
| Entity Address, State or Province | CO |
| Entity Address, Postal Zip Code | 80206 |
| City Area Code | 720 |
| Local Phone Number | 328-5070 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Units, each consisting of one share of common stock, one right entitling the holder to receive one-tenth of one share of common stock upon the consummation of an initial business combination, and one-half of one redeemable warrant | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Units, each consisting of one share of common stock, one right entitling the holder to receive one-tenth of one share of common stock |
| Trading Symbol | ENERU |
| Security Exchange Name | NASDAQ |
| Common Stock Par Value 0. 001 Per Share [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Trading Symbol | ENER |
| Security Exchange Name | NASDAQ |
| Rights, each right entitling the holder to receive one-tenth of one share of common stock upon the consummation of an initial business combination | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Rights, each right entitling the holder to receive one-tenth of one share of common stock upon the consummation of an initial business combination |
| Trading Symbol | ENERR |
| Security Exchange Name | NASDAQ |
| Redeemable warrants, exercisable for shares of common stock at an exercise price of $11.50 per share | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Redeemable warrants, exercisable for shares of common stock at an exercise price of $11.50 per share |
| Trading Symbol | ENERW |
| Security Exchange Name | NASDAQ |
