XML 12 R1.htm IDEA: XBRL DOCUMENT v3.19.2
Document and Entity Information - shares
 6 Months Ended
May 31, 2019
Jul. 09, 2019
Document And Entity Information    
Entity Registrant Name Greenland Acquisition Corp.  
Entity Central Index Key 0001735041  
Amendment Flag false  
Current Fiscal Year End Date --11-30  
Document Type 10-Q  
Document Period End Date May 31, 2019  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2019  
Entity Filer Category Non-accelerated Filer  
Entity Current Reporting Status Yes  
Entity Ex Transition Period false  
Entity Small Business true  
Entity Shell Company true  
Entity Emerging Growth Company true  
Entity Common Stock, Shares Outstanding   5,782,000
Entity File Number 001-38605