v3.25.2
Cover - $ / shares
 6 Months Ended
Jun. 30, 2025
Aug. 12, 2025
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Jun. 30, 2025  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2025  
Current Fiscal Year End Date --12-31  
Entity File Number 001-42400  
Entity Registrant Name WILLOW LANE ACQUISITION CORP.  
Entity Central Index Key 0002032379  
Entity Tax Identification Number 00-0000000  
Entity Incorporation, State or Country Code E9  
Entity Address, Address Line One 250 West 57th Street  
Entity Address, Address Line Two Suite 415  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10107  
City Area Code (646)  
Local Phone Number 565-3861  
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-half of one Redeemable Warrant    
Title of 12(b) Security Units, each consisting of one Class A Ordinary Share and one-half of one Redeemable Warrant  
Trading Symbol WLACU  
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 WLAC  
Security Exchange Name NASDAQ  
Redeemable Warrants, each whole warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50    
Title of 12(b) Security Redeemable Warrants, each whole warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50  
Trading Symbol WLACW  
Security Exchange Name NASDAQ  
Common Class A [Member]    
Entity Common Stock, Shares Outstanding   12,650,000
Entity Listing, Par Value Per Share $ 0.0001  
Common Class B [Member]    
Entity Common Stock, Shares Outstanding   4,628,674
Entity Listing, Par Value Per Share $ 0.0001