Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.21.1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2021
May 20, 2021
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Mar. 31, 2021  
Document Fiscal Year Focus 2021  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q1  
Entity Central Index Key 0001821850  
Entity File Number 001-39739  
Entity Registrant Name Spartan Acquisition Corp. II  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 85-2599566  
Entity Address, Address Line One 9 West 57th Street, 43rd Floor  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10019  
City Area Code 212  
Local Phone Number 515-3200  
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  
Entity Ex Transition Period false  
Entity Shell Company true  
Units    
Document Information [Line Items]    
Title of 12(b) Security Units, each consisting of one share of Class A common stock, par value $0.0001 per share, and one-half of one warrant  
Trading Symbol SPRQ U  
Security Exchange Name NYSE  
Class A Common Stock    
Document Information [Line Items]    
Title of 12(b) Security Class A common stock, par value $0.0001 per share  
Trading Symbol SPRQ  
Security Exchange Name NYSE  
Entity Common Stock, Shares Outstanding   34,500,000
Warrants    
Document Information [Line Items]    
Title of 12(b) Security Warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50 per share  
Trading Symbol SPRQ WS  
Security Exchange Name NYSE  
Class B Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   8,625,000