v3.25.4
Cover
Mar. 02, 2026
Document Information Line Items  
Entity Registrant Name Piermont Valley Acquisition Corp
Entity Central Index Key 0001865248
Document Type 8-K
Amendment Flag false
Current Fiscal Year End Date --03-31
Entity Emerging Growth Company true
Document Period End Date Mar. 02, 2026
Entity Ex Transition Period false
Entity File Number 001-41108
Entity Incorporation State Country Code E9
Entity Tax Identification Number 98-1598114
Entity Address Address Line 1 732 S 6th St.
Entity Address Address Line 2 #5386
Entity Address City Or Town Las Vegas
Entity Address State Or Province NV
Entity Address Postal Zip Code 89101
City Area Code 929
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Local Phone Number 792-5788
Units, each consisting of one Class A ordinary share, par value $0.0001, and one-half of one redeemable warrant [Member]  
Document 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 CMCAU
Class A ordinary shares, par value [Member]  
Document Information Line Items  
Security 12b Title Class A ordinary shares, par value $0.0001 per share
Trading Symbol CMCAF
Warrants, each whole warrant exercisable for one Class A ordinary share, each at an exercise price of $11.50 per share [Member]  
Document Information Line Items  
Security 12b Title Warrants, each whole warrant exercisable for one Class A ordinary share, each at an exercise price of $11.50 per share
Trading Symbol CMCAW