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S-K 1602(b)(6) Prospectus Summary, Sponsor Compensation
Sep. 05, 2025
USD ($)
$ / shares
shares
Over-allotment Option [Member]  
SPAC Prospectus Summary, Sponsor Compensation [Line Items]  
Securities Issued or to be Issued, Shares | shares 937,500
Private Placement Shares [Member]  
SPAC Prospectus Summary, Sponsor Compensation [Line Items]  
Securities Issued or to be Issued, Shares | shares 2,250,000
Price Paid or to be Paid for Securities, Total Amount | $ $ 4,500,000
FutureCrest Acquisition Sponsor LLC [Member]  
SPAC Prospectus Summary, Sponsor Compensation [Line Items]  
Price Paid or to be Paid for Securities, Total Amount | $ 300,000
Working Capital Loan [Member]  
SPAC Prospectus Summary, Sponsor Compensation [Line Items]  
Price Paid or to be Paid for Securities, Total Amount | $ $ 1,500,000
Price Paid or to be Paid for Securities, Per Share | $ / shares $ 2
Class B ordinary shares  
SPAC Prospectus Summary, Sponsor Compensation [Line Items]  
Securities Issued or to be Issued, Shares | shares 7,187,500
Price Paid or to be Paid for Securities, Total Amount | $ $ 25,000
Founder Shares [Member]  
SPAC Prospectus Summary, Sponsor Compensation [Line Items]  
Securities Issued or to be Issued, Shares | shares 125,000
Price Paid or to be Paid for Securities, Per Share | $ / shares $ 0.0035