Annual report pursuant to Section 13 and 15(d)

Cover Page

v3.23.1
Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2022
Mar. 31, 2023
Dec. 30, 2022
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2022    
Document Fiscal Year Focus 2022    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-31    
Entity Registrant Name BLACK MOUNTAIN ACQUISITION CORP.    
Entity Central Index Key 0001848020    
Entity File Number 001-40907    
Entity Current Reporting Status Yes    
Entity Filer Category Non-accelerated Filer    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Interactive Data Current Yes    
Entity Shell Company true    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
ICFR Auditor Attestation Flag false    
Document Annual Report true    
Document Transition Report false    
Entity Tax Identification Number 86-2013849    
Entity Incorporation, State or Country Code DE    
Entity Address, Address Line One 425 Houston Street    
Entity Address, Address Line Two Suite 4500    
Entity Address, City or Town Fort Worth    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 76102    
City Area Code 817    
Local Phone Number 698-9901    
Auditor Name Marcum LLP    
Auditor Firm ID 688    
Auditor Location Houston, TX    
Entity Public Float     $ 281,520,000
Capital Units [Member]      
Document Information [Line Items]      
Title of 12(b) Security Units, each consisting of one share of Class A common stock, $0.0001 par value, and three quarters of one warrant    
Trading Symbol BMAC.U    
Security Exchange Name NYSE    
Common Class A [Member]      
Document Information [Line Items]      
Title of 12(b) Security Class A common stock, par value $0.0001 per share    
Trading Symbol BMAC    
Security Exchange Name NYSE    
Entity Common Stock, Shares Outstanding   27,600,000  
Warrant [Member]      
Document Information [Line Items]      
Title of 12(b) Security Warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50 per share    
Trading Symbol BMAC WS    
Security Exchange Name NYSE    
Common Class B [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   6,900,000