Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Mar. 05, 2020	Jun. 30, 2019
Document and Entity Information
Document Type	10-K/A
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2019
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	520 Gervais Street
Entity Address, City or Town	Columbia
Entity Address, State or Province	SC
Entity Address, Postal Zip Code	29201
City Area Code	800
Local Phone Number	277-2175
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
Entity Shell Company	false
Entity Public Float			$ 2,512,032,000
Entity Common Stock, Shares Outstanding		33,450,861
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Central Index Key	0000764038
Amendment Flag	false