XML 85 R69.htm IDEA: XBRL DOCUMENT v3.20.4

Summary of Significant Accounting Policies - Concentrations of Credit Risk (Details) - Concentrations of Credit Risk $ in Millions	Dec. 31, 2020 USD ($) item
Concentrations of Credit Risk
Concentration risk threshold, total risk-based capital threshold (as a percent)	25.00%
Concentration risk threshold, total risk-based capital threshold	$ 841.1
Number of credit concentrations for non-acquired credit impaired loans | item	5
Lessors of residential and buildings
Concentrations of Credit Risk
Concentration risk threshold, total risk-based capital threshold	$ 1,100.0
Lessors of nonresidential buildings
Concentrations of Credit Risk
Concentration risk threshold, total risk-based capital threshold	3,700.0
Loans on hotels and motels
Concentrations of Credit Risk
Concentration risk threshold, total risk-based capital threshold	969.9
Other holding companies
Concentrations of Credit Risk
Concentration risk threshold, total risk-based capital threshold	3,100.0
Loans on owner occupied office buildings
Concentrations of Credit Risk
Concentration risk threshold, total risk-based capital threshold	$ 3,600.0

X

- Definition

Represents the number of credit concentrations meeting threshold for concentration of risk.

+ References

No definition available.

+ Details

Name:	ssb_ConcentrationRiskNumber
Namespace Prefix:	ssb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the threshold amount for determining concentration of risk.

+ References

No definition available.

+ Details

Name:	ssb_ConcentrationRiskThresholdAmount
Namespace Prefix:	ssb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the threshold percentage for determining concentration of risk.

+ References

No definition available.

+ Details

Name:	ssb_ConcentrationRiskThresholdPercentage
Namespace Prefix:	ssb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ConcentrationRiskLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CreditConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=ssb_LessorsOfResidentialBuildingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=ssb_LessorsOfNonresidentialBuildingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=ssb_HotelsAndMotelsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=ssb_OtherHoldingCompaniesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=ssb_LoansOnOwnerOccupiedOfficeBuildingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: