v3.26.3
Cover
Nov. 04, 2026
Document Type 8-K
Amendment Flag false
Document Period End Date Nov. 04, 2026
Entity File Number 001-42421
Entity Registrant Name FACT II ACQUISITION CORP.
Entity Central Index Key 0002028935
Entity Tax Identification Number 00-0000000
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One 14 Wall Street
Entity Address, Address Line Two 20th Floor
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Country US
Entity Address, Postal Zip Code 10005
City Area Code 212
Local Phone Number 618-1798
Written Communications false
Soliciting Material true
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false
Units, each consisting of one Class A ordinary share, par value $0.0001 per share, and one-half of one redeemable warrant  
Title of 12(b) Security Units, each consisting of one Class A ordinary share, par value $0.0001 per share, and one-half of one redeemable warrant
Trading Symbol FACTU
Security Exchange Name NASDAQ
Class A ordinary shares, par value $0.0001 per share, included as part of the units  
Title of 12(b) Security Class A ordinary shares, par value $0.0001 per share, included as part of the units
Trading Symbol FACT
Security Exchange Name NASDAQ
Warrants included as part of the units, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50  
Title of 12(b) Security Warrants included as part of the units, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50
Trading Symbol FACTW
Security Exchange Name NASDAQ