| Cover | Jan. 02, 2025 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 02, 2025 |
| Securities Act File Number | 001-38990 |
| Entity Registrant Name | Advantage Solutions Inc. |
| Entity Central Index Key | 0001776661 |
| Entity Tax Identification Number | 83-4629508 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 8001 Forsyth Blvd |
| Entity Address, Address Line Two | Suite 1025 |
| Entity Address, City or Town | Clayton |
| Entity Address, State or Province | MO |
| Entity Address, Postal Zip Code | 63105 |
| City Area Code | 314 |
| Local Phone Number | 655-9333 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Class A common stock, $0.0001 par value per share | |
| Title of 12(b) Security | Class A common stock, $0.0001 par value per share |
| Trading Symbol | ADV |
| Security Exchange Name | NASDAQ |
| Warrants exercisable for one share of Class A common stock at an exercise price of $11.50 per share | |
| Title of 12(b) Security | Warrants exercisable for one share of Class A common stock at an exercise price of $11.50 per share |
| Trading Symbol | ADVWW |
| Security Exchange Name | NASDAQ |
