v3.26.3
Cover - shares
6 Months Ended
Jun. 30, 2026
Aug. 21, 2026
Document Type 10-Q/A  
Amendment Flag true  
Amendment Description Hall Chadwick Acquisition Corp. (the “Company”) is filing this Amendment No. 2 on Form 10-Q/A (this “Amendment No. 2”) to amend its Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2026 (the “Original Form 10-Q”), as originally filed with the Securities and Exchange Commission (the “SEC”) on August 19, 2026, as previously amended by Amendment No. 1 on Form 10-Q/A filed with the SEC on September 23, 2026 (“Amendment No. 1”).   Amendment No. 1 was inadvertently filed prior to the Company receiving final sign-off from the independent registered public accounting firm. In connection with this Amendment No. 2, the Company corrected an immaterial $1 rounding difference in Total Shareholders’ Deficit as of December 31, 2025, revised Note 2 to reflect a recent revision to financial statements, and made minor formatting corrections to the condensed consolidated financial statements. These corrections do not affect total assets, total liabilities, net income, or cash flows for any period presented. The Company has since received final sign-off from the independent registered public accounting firm.    Pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended, this Form 10-Q/A also contains new certifications by the Company’s principal executive officer and principal financial officer, filed as exhibits hereto.   This Form 10-Q/A should be read in conjunction with the original Form 10-Q filed for the quarterly period ended June 30, 2026, along with Amendment No.1.   
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Jun. 30, 2026  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --12-31  
Entity File Number 001-42962  
Entity Registrant Name HALL CHADWICK ACQUISITION CORP.  
Entity Central Index Key 0002079013  
Entity Tax Identification Number 00-0000000  
Entity Incorporation, State or Country Code E9  
Entity Address, Address Line One 1 North Bridge Road  
Entity Address, Address Line Two #18-06 High Street Centre  
Entity Address, City or Town Singapore  
Entity Address, Country SG  
Entity Address, Postal Zip Code 179094  
City Area Code +65  
Local Phone Number 9088 2642  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Elected Not To Use the Extended Transition Period false  
Entity Shell Company true  
Units, each consisting of one Class A ordinary share and one share right    
Title of 12(b) Security Units, each consisting of one Class A ordinary share and one share right  
Trading Symbol HCACU  
Security Exchange Name NASDAQ  
Class A ordinary shares, par value $0.0001 per share    
Title of 12(b) Security Class A ordinary shares, par value $0.0001 per share  
Trading Symbol HCAC  
Security Exchange Name NASDAQ  
Share Rights, each right entitling the holder to receive one tenth (1/10) of a Class A ordinary share     
Title of 12(b) Security Share Rights, each right entitling the holder to receive one tenth (1/10) of a Class A ordinary share   
Trading Symbol HCACR  
Security Exchange Name NASDAQ  
Class A Ordinary Shares [Member]    
Entity Common Stock, Shares Outstanding   21,314,000
Class B Ordinary Shares [Member]    
Entity Common Stock, Shares Outstanding   7,883,293