| Document and Entity Information | Dec. 01, 2023 |
| Document And Entity Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Dec. 01, 2023 |
| Entity Registrant Name | APX ACQUISITION CORP. I |
| Entity Incorporation State Country Code | E9 |
| Entity File Number | 001-41125 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Address Address Line 1 | 714 Westview Avenue |
| Entity Address City Or Town | Nashville |
| Entity Address State Or Province | TN |
| Entity Address Postal Zip Code | 37205 |
| City Area Code | 202 |
| Local Phone Number | 465-5882 |
| 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 | 0001868573 |
| Amendment Flag | false |
| Capital Units [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Units, each consisting of one Class A ordinary share, par value $0.0001, and one-half of one redeemable warrant |
| Trading Symbol | APXIU |
| Security Exchange Name | NASDAQ |
| Common Class A [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class A ordinary shares, par value $0.0001 per share |
| Trading Symbol | APXI |
| Security Exchange Name | NASDAQ |
| Warrant [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Warrants, each whole warrant exercisable for one share of Class A ordinary share for $11.50 per share |
| Trading Symbol | APXIW |
| Security Exchange Name | NASDAQ |
