| Document and Entity Information | Aug. 22, 2023 |
| Document And Entity Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Aug. 22, 2023 |
| Entity Registrant Name | Complete Solaria, Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-40117 |
| Entity Tax Identification Number | 93-2279786 |
| Entity Address, Address Line One | 45700 Northport Loop East |
| Entity Address, City or Town | Fremont |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94538 |
| City Area Code | 510 |
| Local Phone Number | 270-2507 |
| Entity Information, Former Legal or Registered Name | FACT Acquisition I Corp. |
| 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 |
| Entity Central Index Key | 0001838987 |
| Amendment Flag | false |
| Former Address [Member] | |
| Document And Entity Information [Line Items] | |
| Entity Address, Address Line One | 14 Wall Street |
| Entity Address, Address Line Two | 20th Floor |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10005 |
| Common Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | Common Stock, par value $0.0001 per share |
| Trading Symbol | CSLR |
| Security Exchange Name | NASDAQ |
| Warrant [Member] | |
| Document And Entity Information [Line Items] | |
| Title of 12(b) Security | Warrants, each whole warrant exercisable for one share of Common Stock at an exercise price of $11.50 per share |
| Trading Symbol | CSLRW |
| Security Exchange Name | NASDAQ |
