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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2022
Feb. 23, 2023
Jun. 30, 2022
Document and Entity Information      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2022    
Entity File Number 001-12669    
Entity Registrant Name SOUTH STATE CORP    
Entity Incorporation, State or Country Code SC    
Entity Tax Identification Number 57-0799315    
Entity Address, Address Line One 1101 First Street South, Suite 202,    
Entity Address, City or Town Winter Haven    
Entity Address, State or Province FL    
Entity Address, Postal Zip Code 33880    
City Area Code 863    
Local Phone Number 293-4710    
Title of 12(b) Security Common Stock    
Trading Symbol SSB    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 5,771,315,000
Entity Common Stock, Shares Outstanding   75,847,025  
Auditor Name FORVIS, LLP    
Auditor Firm ID 686    
Auditor Location Atlanta, Georgia    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2022    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000764038    
Amendment Flag false