v3.10.0.1
Document And Entity Information - USD ($)
12 Months Ended
Dec. 31, 2018
Feb. 18, 2019
Jun. 30, 2018
Document And Entity Information      
Entity Registrant Name OIL STATES INTERNATIONAL, INC    
Entity Central Index Key 0001121484    
Trading Symbol OIS    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer Yes    
Entity Common Stock, Shares Outstanding (in shares)   60,498,465  
Entity Public Float     $ 1,899,035,183
Document Type 10-K    
Document Period End Date Dec. 31, 2018    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Amendment Flag false