$SSB
SouthState Corp Stock $ssb

$ssb Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000155837021001976 Filed on February 26, 2021

Income Statement

Concept	2020 Q4	2019 Q4	2018 Q4
Revenue
YoY Change
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$14.90M	$8.100M	$8.800M
YoY Change	83.95%	-7.95%	14.29%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense
YoY Change
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$66.80M	$58.60M	$61.60M
YoY Change	13.99%	-4.87%	43.26%
Income Tax	-$19.40M	$9.500M	$13.60M
% Of Pretax Income	-29.04%	16.21%	22.08%
Net Earnings	$86.20M	$49.10M	$49.00M
YoY Change	75.56%	0.2%	1941.67%
Net Earnings / Revenue
Basic Earnings Per Share
Diluted Earnings Per Share	$1.209M	$1.444M	$1.346M
COMMON SHARES
Basic Shares Outstanding	70.95M	33.74M
Diluted Shares Outstanding

Balance Sheet

Concept	2020 Q4	2019 Q4	2018 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$4.609B	$688.7M	$409.0M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$579.0M	$317.3M	$241.1M
YoY Change	82.47%	31.63%	-5.83%
Goodwill	$1.564B	$1.003B	$1.003B
YoY Change	55.94%	0.0%	0.33%
Intangibles	$162.6M	$49.82M	$62.90M
YoY Change	226.39%	-20.8%
Long-Term Investments	$5.000M	$4.000M
YoY Change	25.0%
Other Assets	$147.0M	$31.00M	$37.00M
YoY Change	374.19%	-16.22%	-19.57%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$37.79B	$15.92B	$14.68B
YoY Change	137.35%	8.49%	1.45%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$118.0M	$89.00M
YoY Change	32.58%
Deferred Revenue
YoY Change
Short-Term Debt	$780.0M	$299.0M	$271.0M
YoY Change	160.87%	10.33%	-5.57%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$118.0M	$89.00M	$271.0M
YoY Change	32.58%	-67.16%	-5.57%
LONG-TERM LIABILITIES
Long-Term Debt	$390.0M	$816.0M	$266.0M
YoY Change	-52.21%	206.77%	23.15%
Other Long-Term Liabilities	$1.117B	$167.0M	$126.0M
YoY Change	568.86%	32.54%	3.28%
Total Long-Term Liabilities	$1.507B	$983.0M	$392.0M
YoY Change	53.31%	150.77%	15.98%
TOTAL LIABILITIES
Total Short-Term Liabilities	$118.0M	$89.00M	$271.0M
Total Long-Term Liabilities	$1.507B	$983.0M	$392.0M
Total Liabilities	$33.14B	$13.55B	$12.31B
YoY Change	144.61%	10.06%	1.25%
SHAREHOLDERS EQUITY
Retained Earnings	$657.5M	$679.9M	$551.1M
YoY Change	-3.3%	23.37%
Common Stock	$177.4M	$84.36M	$89.57M
YoY Change	110.33%	-5.82%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$4.648B	$2.373B	$2.366B
YoY Change
Total Liabilities & Shareholders Equity	$37.79B	$15.92B	$14.68B
YoY Change	137.35%	8.49%	1.45%

Cashflow Statement

Concept	2020 Q4	2019 Q4	2018 Q4
OPERATING ACTIVITIES
Net Income	$86.20M	$49.10M	$49.00M
YoY Change	75.56%	0.2%	1941.67%
Depreciation, Depletion And Amortization	$14.90M	$8.100M	$8.800M
YoY Change	83.95%	-7.95%	14.29%
Cash From Operating Activities	$180.8M	$53.30M	$59.90M
YoY Change	239.21%	-11.02%	19.8%
INVESTING ACTIVITIES
Capital Expenditures	-$3.900M	-$4.300M	-$5.000M
YoY Change	-9.3%	-14.0%	-18.03%
Acquisitions
YoY Change
Other Investing Activities	-$107.6M	-$235.2M	-$54.60M
YoY Change	-54.25%	330.77%	-140.84%
Cash From Investing Activities	-$111.5M	-$239.5M	-$59.60M
YoY Change	-53.44%	301.85%	-146.71%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	68.20M	155.6M	101.4M
YoY Change	-56.17%	53.45%	-149.73%
NET CHANGE
Cash From Operating Activities	180.8M	53.30M	59.90M
Cash From Investing Activities	-111.5M	-239.5M	-59.60M
Cash From Financing Activities	68.20M	155.6M	101.4M
Net Change In Cash	137.5M	-30.60M	101.7M
YoY Change	-549.35%	-130.09%	-486.69%
FREE CASH FLOW
Cash From Operating Activities	$180.8M	$53.30M	$59.90M
Capital Expenditures	-$3.900M	-$4.300M	-$5.000M
Free Cash Flow	$184.7M	$57.60M	$64.90M
YoY Change	220.66%	-11.25%	15.69%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
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CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
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CY2020	dei	Document Type DocumentType	10-K
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CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
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CY2020	dei	Entity File Number EntityFileNumber	001-12669
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	SC
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	57-0799315
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	1101 First Street South, Suite 202,
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Winter Haven
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	FL
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CY2020	dei	City Area Code CityAreaCode	863
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CY2019	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	4545000
CY2018	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	8405000
CY2020	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	4092000
CY2019	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	4309000
CY2018	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	4221000
CY2020	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	85906000
CY2019	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	4552000
CY2018	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	29868000
CY2020	ssb	Swap Termination Expenses SwapTerminationExpenses	38787000
CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	52845000
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	31493000
CY2018	us-gaap	Other Noninterest Expense OtherNoninterestExpense	29375000
CY2020	us-gaap	Noninterest Expense NoninterestExpense	797644000
CY2019	us-gaap	Noninterest Expense NoninterestExpense	404638000
CY2018	us-gaap	Noninterest Expense NoninterestExpense	420927000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	103972000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	230425000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	224255000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-16660000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	43942000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	45384000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	120632000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	186483000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	178871000
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.20
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.40
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.90
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.19
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.36
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.86
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	54756000
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	34561000
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36530000
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	55063000
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	34797000
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36776000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	120632000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	186483000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	178871000
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	47401000
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	36211000
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-17322000
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	11544000
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	7966000
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-3843000
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	50000
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-2655000
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-655000
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	11000
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-584000
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-145000
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	35818000
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	30316000
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-12969000
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-33512000
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-13394000
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	42000
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-7372000
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-2947000
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	9000
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-47303000
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	349000
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-155000
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-10407000
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	77000
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-34000
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	10756000
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-10719000
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	154000
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	160000
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	-25000
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	-490000
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax	41000
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax	-5000
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax	-108000
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	152000
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	8053000
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	1187000
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	35000
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	1772000
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	261000
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	2000
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-6301000
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1308000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	46572000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	25898000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-11507000
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	167204000
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	212381000
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	167364000
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	2308920000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	178871000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-11507000
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	167364000
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.38
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	50557000
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1331000
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1032000
CY2018	us-gaap	Stock Redeemed Or Called During Period Value StockRedeemedOrCalledDuringPeriodValue	68404000
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	2173000
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8783000
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	2366296000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	186483000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	25898000
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	212381000
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.67
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	57696000
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1394000
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1230000
CY2019	us-gaap	Stock Redeemed Or Called During Period Value StockRedeemedOrCalledDuringPeriodValue	156945000
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	2486000
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8839000
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	2373013000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	120632000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	46572000
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	167204000
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.88
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	98256000
CY2020	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1537000
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1681000
CY2020	us-gaap	Stock Redeemed Or Called During Period Value StockRedeemedOrCalledDuringPeriodValue	24715000
CY2020	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	7716000
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	23318000
CY2020	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	2246327000
CY2020	ssb	Value Of Stock Options And Restricted Stock Acquired And Converted Pursuant To Acquisition ValueOfStockOptionsAndRestrictedStockAcquiredAndConvertedPursuantToAcquisition	10307000
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	4647880000
CY2020	us-gaap	Profit Loss ProfitLoss	120632000
CY2019	us-gaap	Profit Loss ProfitLoss	186483000
CY2018	us-gaap	Profit Loss ProfitLoss	178871000
CY2020	ssb	Depreciation Depletion And Amortization Other Than Amortization Of Debt Discount Premium DepreciationDepletionAndAmortizationOtherThanAmortizationOfDebtDiscountPremium	46367000
CY2019	ssb	Depreciation Depletion And Amortization Other Than Amortization Of Debt Discount Premium DepreciationDepletionAndAmortizationOtherThanAmortizationOfDebtDiscountPremium	33121000
CY2018	ssb	Depreciation Depletion And Amortization Other Than Amortization Of Debt Discount Premium DepreciationDepletionAndAmortizationOtherThanAmortizationOfDebtDiscountPremium	35696000
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	235989000
CY2019	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	12777000
CY2018	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	13783000
CY2020	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-44282000
CY2019	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-1492000
CY2018	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	15176000
CY2018	us-gaap	Impairment Of Investments ImpairmentOfInvestments	-991000
CY2020	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	50000
CY2019	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	2711000
CY2018	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-655000
CY2020	ssb	Debt Securities Trading Revenue DebtSecuritiesTradingRevenue	486000
CY2020	ssb	Debt Securities Trading Purchases DebtSecuritiesTradingPurchases	-201095000
CY2020	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	-190907000
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	23318000
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	8839000
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	8783000
CY2020	ssb	Accretion On Loans Covered Under Fdic Loss Share Agreements AccretionOnLoansCoveredUnderFdicLossShareAgreements	56170000
CY2019	ssb	Accretion On Loans Covered Under Fdic Loss Share Agreements AccretionOnLoansCoveredUnderFdicLossShareAgreements	12986000
CY2018	ssb	Accretion On Loans Covered Under Fdic Loss Share Agreements AccretionOnLoansCoveredUnderFdicLossShareAgreements	27756000
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-5010000
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-3617000
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-1568000
CY2020	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	546000
CY2019	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-178000
CY2018	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	1969000
CY2020	us-gaap	Adjustment For Amortization AdjustmentForAmortization	22231000
CY2019	us-gaap	Adjustment For Amortization AdjustmentForAmortization	7260000
CY2018	us-gaap	Adjustment For Amortization AdjustmentForAmortization	7567000
CY2020	ssb	Other Real Estate Write Downs OtherRealEstateWriteDowns	1085000
CY2019	ssb	Other Real Estate Write Downs OtherRealEstateWriteDowns	1193000
CY2018	ssb	Other Real Estate Write Downs OtherRealEstateWriteDowns	1420000
CY2020	ssb	Fair Value Adjustment For Loans Held For Sale FairValueAdjustmentForLoansHeldForSale	4705000
CY2019	ssb	Fair Value Adjustment For Loans Held For Sale FairValueAdjustmentForLoansHeldForSale	-1057000
CY2018	ssb	Fair Value Adjustment For Loans Held For Sale FairValueAdjustmentForLoansHeldForSale	-521000
CY2020	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	2959310000
CY2019	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	847684000
CY2018	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	622589000
CY2020	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	3297155000
CY2019	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	824712000
CY2018	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	679811000
CY2020	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	120077000
CY2019	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	12408000
CY2018	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	8739000
CY2020	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	10170000
CY2019	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	5567000
CY2018	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	5556000
CY2020	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	19362000
CY2019	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	777000
CY2018	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	3269000
CY2020	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	8945000
CY2019	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	2411000
CY2018	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-1951000
CY2020	ssb	Increase Decrease In Operating Leases Net IncreaseDecreaseInOperatingLeasesNet	-6434000
CY2019	ssb	Increase Decrease In Operating Leases Net IncreaseDecreaseInOperatingLeasesNet	-1457000
CY2020	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	1231000
CY2019	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	-1105000
CY2018	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	-583000
CY2020	us-gaap	Increase Decrease In Derivative Assets IncreaseDecreaseInDerivativeAssets	-98807000
CY2019	us-gaap	Increase Decrease In Derivative Assets IncreaseDecreaseInDerivativeAssets	10373000
CY2018	us-gaap	Increase Decrease In Derivative Assets IncreaseDecreaseInDerivativeAssets	5157000
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-27365000
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	29932000
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-8962000
CY2020	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-3683000
CY2019	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	197000
CY2018	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	1930000
CY2020	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-77946000
CY2019	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-8536000
CY2018	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	143000
CY2020	us-gaap	Increase Decrease In Derivative Liabilities IncreaseDecreaseInDerivativeLiabilities	-113788000
CY2019	us-gaap	Increase Decrease In Derivative Liabilities IncreaseDecreaseInDerivativeLiabilities	26064000
CY2018	us-gaap	Increase Decrease In Derivative Liabilities IncreaseDecreaseInDerivativeLiabilities	4545000
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	74079000
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	9959000
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-1186000
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	536943000
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	181028000
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	283711000
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	100754000
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	242733000
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	73054000
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	2534000
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	2530000
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	957250000
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	308109000
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	224713000
CY2020	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	71788000
CY2019	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	45000
CY2018	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	15938000
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1309450000
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	955505000
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	191313000
CY2020	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	958391000
CY2020	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	85511000
CY2019	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	23566000
CY2018	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	18494000
CY2020	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	156360000
CY2019	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	363446000
CY2018	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	391428000
CY2020	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	2566376000
CY2020	us-gaap	Proceeds From Recoveries Of Loan Previously Charged Off ProceedsFromRecoveriesOfLoanPreviouslyChargedOff	11776000
CY2019	us-gaap	Proceeds From Recoveries Of Loan Previously Charged Off ProceedsFromRecoveriesOfLoanPreviouslyChargedOff	3914000
CY2018	us-gaap	Proceeds From Recoveries Of Loan Previously Charged Off ProceedsFromRecoveriesOfLoanPreviouslyChargedOff	3300000
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	16930000
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	15798000
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	14538000
CY2020	us-gaap	Proceeds From Sale Of Insurance Investments ProceedsFromSaleOfInsuranceInvestments	19655000
CY2020	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	19156000
CY2019	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	8450000
CY2018	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	13943000
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	7131000
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	11000
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	146000
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1229778000
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-795053000
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-282149000
CY2020	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	2902023000
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	530163000
CY2018	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	114779000
CY2020	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	79379000
CY2019	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	28092000
CY2018	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	-16208000
CY2020	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	500000000
CY2019	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	700001000
CY2018	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	590001000
CY2020	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	1200103000
CY2019	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	150007000
CY2018	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	540007000
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1537000
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1394000
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1331000
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	32431000
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	159431000
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	70577000
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	98256000
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	57696000
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	50557000
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1681000
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1230000
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1032000
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2153830000
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	893746000
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	29794000
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	3920551000
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	279721000
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	31356000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	688704000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	408983000
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	377627000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4609255000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	688704000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	408983000
CY2020	us-gaap	Interest Paid Net InterestPaidNet	87246000
CY2019	us-gaap	Interest Paid Net InterestPaidNet	86355000
CY2018	us-gaap	Interest Paid Net InterestPaidNet	52062000
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	103801000
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	55674000
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	31941000
CY2019	ssb	Right Of Use Asset Obtained In Exchange For Operating Lease Liability Initial Measurement And Recognition RightOfUseAssetObtainedInExchangeForOperatingLeaseLiabilityInitialMeasurementAndRecognition	82160000
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	9426000
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	10239000
CY2020	ssb	Fair Value Of Assets Acquired Net Of Adjustments FairValueOfAssetsAcquiredNetOfAdjustments	18825354000
CY2018	ssb	Fair Value Of Assets Acquired Net Of Adjustments FairValueOfAssetsAcquiredNetOfAdjustments	-7247000
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Intangible Assets Acquired1 NoncashOrPartNoncashAcquisitionIntangibleAssetsAcquired1	140862000
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Intangible Assets Acquired1 NoncashOrPartNoncashAcquisitionIntangibleAssetsAcquired1	3321000
CY2020	ssb	Liabilities Assumed Net Of Adjustments LiabilitiesAssumedNetOfAdjustments	17270550000
CY2018	ssb	Liabilities Assumed Net Of Adjustments LiabilitiesAssumedNetOfAdjustments	-612000
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Net Nonmonetary Assets Acquired Liabilities Assumed1 NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1	561042000
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Net Nonmonetary Assets Acquired Liabilities Assumed1 NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1	-3314000
CY2020	ssb	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Common Shares Issued1 NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationCommonSharesIssued1	2246327000
CY2020	ssb	Real Estate Acquired In Full Or In Partial Settlement Of Loans RealEstateAcquiredInFullOrInPartialSettlementOfLoans	4660000
CY2019	ssb	Real Estate Acquired In Full Or In Partial Settlement Of Loans RealEstateAcquiredInFullOrInPartialSettlementOfLoans	8666000
CY2018	ssb	Real Estate Acquired In Full Or In Partial Settlement Of Loans RealEstateAcquiredInFullOrInPartialSettlementOfLoans	13391000
CY2020	ssb	Number Of Unconsolidated Subsidiaries NumberOfUnconsolidatedSubsidiaries	20
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	27000000.0
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Use of Estimates</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;">The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the consolidated balance sheet and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for credit losses for loans and investment securities held-to-maturity, fair value of financial instruments, fair values of assets </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 12pt 0pt;">and liabilities acquired in business combinations, loss estimates related to loans and other real estate acquired, evaluating impairment of investment securities, goodwill impairment tests and valuation of deferred tax assets.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 12pt 0pt;"><span style="display:inline-block;text-indent:0pt;width:36pt;"/><span style="white-space:pre-wrap;">In connection with the determination of the allowance for credit losses, management has identified specific loans as well as adopted a policy of providing amounts for loan valuation purposes which are not identified with any specific loan but are derived from models based on macroeconomic factors and forecasts. Management believes that the allowance for credit losses is adequate. While management uses available information to recognize losses on loans, future additions to the allowance may be necessary based on changes in economic forecasts. In addition, regulatory agencies, as an integral part of the examination process, periodically review the banking subsidiary’s allowance for credit losses. Such agencies may require additions to the allowance based on their judgments about information available to them at the time of their examination. </span></p>
CY2020	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Concentrations of Credit Risk</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt 0pt 12pt 0pt;">The Company’s Bank subsidiary grants agribusiness, commercial, and residential loans to customers throughout South Carolina, North Carolina, Florida, Alabama, Virginia and Georgia. Although the subsidiary has a diversified loan portfolio, a substantial portion of their borrowers’ abilities to honor their contracts is dependent upon economic conditions within South Carolina, North Carolina, Florida, Alabama, Virginia, Georgia and the surrounding regions.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt 0pt 12pt 0pt;">The Company considers concentrations of credit to exist when, pursuant to regulatory guidelines, the amounts loaned to a multiple number of borrowers engaged in similar business activities which would cause them to be similarly impacted by general economic conditions represents 25% of total Tier 1 capital plus regulatory adjusted allowance for credit losses of the Company, or $841.1 million at December <span style="white-space:pre-wrap;">31, 2020. Based on this criteria, the Company had five such credit concentrations at December 31, 2020, including loans on hotels and motels of $969.9 million, loans to lessors of nonresidential buildings (except mini-warehouses) of $3.7 billion, loans secured by owner occupied nonresidential buildings of $3.1 billion, loans to lessors of residential buildings (investment properties and multi-family) of $1.1 billion and loans secured by 1</span><sup style="font-size:7.5pt;line-height:100%;top:0pt;vertical-align:top;">st</sup> mortgage 1-4 family owner occupied residential property of $3.6 billion. The risk for these loans and for all loans is managed collectively through the use of credit underwriting practices developed and updated over time. The loss estimate for these loans is determined using our standard ACL methodology.</p>
CY2020Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	955500000
CY2020Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	13100000
CY2020Q4	ssb	Threshold Net Book Balance Individually Evaluated Loans ThresholdNetBookBalanceIndividuallyEvaluatedLoans	1000000.0
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	113400000
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	118300000
CY2020Q4	us-gaap	Goodwill Goodwill	1600000000
CY2019Q4	us-gaap	Goodwill Goodwill	1000000000.0
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2020	ssb	Number Of Active Contracts NumberOfActiveContracts	1100000
CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	54400000
CY2020Q1	ssb	Liability Recorded For Expected Credit Losses On Unfunded Commitments LiabilityRecordedForExpectedCreditLossesOnUnfundedCommitments	6400000
CY2020Q1	ssb	Credit Discount On Acquired Credit Impaired Loans CreditDiscountOnAcquiredCreditImpairedLoans	3408000
CY2020	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Reclassification</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt 0pt 12pt 0pt;">Certain amounts previously reported have been reclassified to conform to the current year’s presentation. Such reclassifications had no effect on net income and shareholders’ equity. </p>
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2020Q1	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.22
CY2020	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	1508215000
CY2019	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	1368452000
CY2020	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	1047014000
CY2019	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	1058827000
CY2020	us-gaap	Business Acquisitions Pro Forma Income Loss From Continuing Operations Before Changes In Accounting And Extraordinary Items Net Of Tax BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax	385390000
CY2019	us-gaap	Business Acquisitions Pro Forma Income Loss From Continuing Operations Before Changes In Accounting And Extraordinary Items Net Of Tax BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax	412515000
CY2020	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	5.44
CY2019	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	5.85
CY2020	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	5.42
CY2019	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	5.81
CY2020Q3	ssb	Debt Securities Trading Purchases DebtSecuritiesTradingPurchases	201095000
CY2020Q3	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	190907000
CY2020Q3	ssb	Debt Securities Available For Sale Realized Loss On Exclusion Of Certain Shares DebtSecuritiesAvailableForSaleRealizedLossOnExclusionOfCertainShares	338000
CY2020Q3	ssb	Debt Securities Net Unrealized Gains DebtSecuritiesNetUnrealizedGains	148000
CY2020Q3	us-gaap	Trading Securities Debt TradingSecuritiesDebt	10674000
CY2020Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	955542000
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	2764000
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	1123000
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	957183000
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	3268037000
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	66800000
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	4165000
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	3330672000
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1940763000
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	19823000
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	4539000
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1956047000
CY2020Q4	us-gaap	Other Investments OtherInvestments	160443000
CY2019Q4	us-gaap	Other Investments OtherInvestments	49124000
CY2020	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	9669000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	9698000
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	89007000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	80846000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	83586000
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	88735000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	525547000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	539905000
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	866807000
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	868176000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	2651975000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	2697483000
CY2020Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	955542000
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	957183000
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	3268037000
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	3330672000
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	100754000
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	242733000
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	73054000
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	662000
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	6030000
CY2018	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	31000
CY2020	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	612000
CY2019	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	3319000
CY2018	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	686000
CY2020	ssb	Debt Securities Available For Sale Realized Loss On Exclusion Of Certain Shares DebtSecuritiesAvailableForSaleRealizedLossOnExclusionOfCertainShares	50000
CY2019	ssb	Debt Securities Available For Sale Realized Loss On Exclusion Of Certain Shares DebtSecuritiesAvailableForSaleRealizedLossOnExclusionOfCertainShares	2711000
CY2018	ssb	Debt Securities Available For Sale Realized Loss On Exclusion Of Certain Shares DebtSecuritiesAvailableForSaleRealizedLossOnExclusionOfCertainShares	-655000
CY2020	ssb	Debt Securities Available For Sale Realized Loss On Exclusion Of Certain Shares DebtSecuritiesAvailableForSaleRealizedLossOnExclusionOfCertainShares	50000
CY2019	ssb	Debt Securities Available For Sale Realized Loss On Exclusion Of Certain Shares DebtSecuritiesAvailableForSaleRealizedLossOnExclusionOfCertainShares	2700000
CY2018	ssb	Debt Securities Available For Sale Realized Loss On Exclusion Of Certain Shares DebtSecuritiesAvailableForSaleRealizedLossOnExclusionOfCertainShares	-655000
CY2019	ssb	Debt Securities Available For Sale Realized Loss On Exclusion Of Certain Shares DebtSecuritiesAvailableForSaleRealizedLossOnExclusionOfCertainShares	2700000
CY2018	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	0
CY2019	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	0
CY2020	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	0
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	86
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1123000
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	240591000
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	3144000
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	542297000
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1021000
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	105125000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	3186000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	503728000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1353000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	141982000
CY2020Q4	ssb	Pledged Financial Instruments Not Separately Reported Securities Pledged For Public Funds Deposits And Other Purposes Required And Permitted By Law PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledgedForPublicFundsDepositsAndOtherPurposesRequiredAndPermittedByLaw	2100000
CY2019Q4	ssb	Pledged Financial Instruments Not Separately Reported Securities Pledged For Public Funds Deposits And Other Purposes Required And Permitted By Law PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledgedForPublicFundsDepositsAndOtherPurposesRequiredAndPermittedByLaw	726100000
CY2020Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Securities For Repurchase Agreements PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForRepurchaseAgreements	515900000
CY2019Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Securities For Repurchase Agreements PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForRepurchaseAgreements	242200000
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	24664134000
CY2019Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	11375104000
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	457309000
CY2020Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	24206825000
CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	11313113000
CY2020Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	35600000
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	93900000
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	34700000
CY2020Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	6483423000
CY2020Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	4366628000
CY2020Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	3114428000
CY2020Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	2432489000
CY2020Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	2027572000
CY2020Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	4529178000
CY2020Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	1710416000
CY2020Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	24664134000
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	61216000
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	24507730000
CY2020Q4	ssb	Financing Receivable Recorded Investment Non Accruing FinancingReceivableRecordedInvestmentNonAccruing	95188000
CY2020Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	24664134000
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	33141000
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	95188000
CY2020Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	11651000
CY2020Q4	ssb	Financing Receivable Nonaccrual With No Related Allowance Unpaid Principal Balance FinancingReceivableNonaccrualWithNoRelatedAllowanceUnpaidPrincipalBalance	11253000
CY2020	ssb	Financing Receivable Nonaccrual Transfer Of Credit Impaired Loans FinancingReceivableNonaccrualTransferOfCreditImpairedLoans	21000000.0
CY2019Q4	ssb	Financing Receivable Recorded Investment Collateral Dependent Loans FinancingReceivableRecordedInvestmentCollateralDependentLoans	21847000
CY2019Q4	ssb	Financing Receivable Collateral Dependent Loans Collateral Coverage FinancingReceivableCollateralDependentLoansCollateralCoverage	46256000
CY2020Q4	ssb	Financing Receivable Recorded Investment Collateral Dependent Loans FinancingReceivableRecordedInvestmentCollateralDependentLoans	6935000
CY2020Q4	ssb	Financing Receivable Collateral Dependent Loans Collateral Coverage FinancingReceivableCollateralDependentLoansCollateralCoverage	8050000
CY2020Q1	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	500000
CY2020Q2	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	1000000.0
CY2019	ssb	Financing Receivable Recorded Investment Decrease In Collateral Dependent Loans FinancingReceivableRecordedInvestmentDecreaseInCollateralDependentLoans	-14900000
CY2020	ssb	Length Of Time With Sustained Repayment Performance To Return To Accruing Status LengthOfTimeWithSustainedRepaymentPerformanceToReturnToAccruingStatus	P6M
CY2020	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	26
CY2020	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	9075000
CY2020	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	9075000
CY2020Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	14600000
CY2020Q4	ssb	Financing Receivable Troubled Debt Restructuring Amount In Remaining Availability Under Commitments To Lend Additional Funds FinancingReceivableTroubledDebtRestructuringAmountInRemainingAvailabilityUnderCommitmentsToLendAdditionalFunds	576493
CY2020Q4	ssb	Allowance For Credit Losses Loans That Subsequently Defaulted AllowanceForCreditLossesLoansThatSubsequentlyDefaulted	1200000
CY2020	ssb	Financing Receivable Modifications Number Of Contracts Under Restructured Terms FinancingReceivableModificationsNumberOfContractsUnderRestructuredTerms	25
CY2020	ssb	Financing Receivable Troubled Debt Restructuring Post Modification Amortized Cost Under Restructured Terms FinancingReceivableTroubledDebtRestructuringPostModificationAmortizedCostUnderRestructuredTerms	8775000
CY2020	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	1
CY2020	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	300000
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	56927000
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	14602000
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	11777000
CY2020	ssb	Financing Receivable Allowance For Credit Losses Recovery Net Write Offs FinancingReceivableAllowanceForCreditLossesRecoveryNetWriteOffs	2825000
CY2020	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	89923000
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	457309000
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	415929000
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	1249000
CY2020Q4	ssb	Financing Receivable Allowance For Credit Losses Total Quantitative Allowance FinancingReceivableAllowanceForCreditLossesTotalQuantitativeAllowance	417178000
CY2020Q4	ssb	Financing Receivable Qualitative Allowance For Credit Loss FinancingReceivableQualitativeAllowanceForCreditLoss	40131000
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	457309000
CY2017Q4	us-gaap	Other Real Estate Non Covered OtherRealEstateNonCovered	11203000
CY2018	us-gaap	Other Real Estate Non Covered Additions OtherRealEstateNonCoveredAdditions	13391000
CY2018	us-gaap	Other Real Estate Non Covered Valuation Adjustments OtherRealEstateNonCoveredValuationAdjustments	1420000
CY2018	us-gaap	Other Real Estate Non Covered Disposals OtherRealEstateNonCoveredDisposals	11974000
CY2018Q4	us-gaap	Other Real Estate Non Covered OtherRealEstateNonCovered	11410000
CY2018Q4	ssb	Other Real Estate Owned Excluding Bank Premises Held For Sale OtherRealEstateOwnedExcludingBankPremisesHeldForSale	6153000
CY2018Q4	ssb	Other Real Estate Owned Bank Premises Held For Sale OtherRealEstateOwnedBankPremisesHeldForSale	5257000
CY2019	us-gaap	Other Real Estate Non Covered Additions OtherRealEstateNonCoveredAdditions	10373000
CY2019	us-gaap	Other Real Estate Non Covered Valuation Adjustments OtherRealEstateNonCoveredValuationAdjustments	1192000
CY2019	us-gaap	Other Real Estate Non Covered Disposals OtherRealEstateNonCoveredDisposals	8627000
CY2019Q4	us-gaap	Other Real Estate Non Covered OtherRealEstateNonCovered	11964000
CY2019Q4	ssb	Other Real Estate Owned Excluding Bank Premises Held For Sale OtherRealEstateOwnedExcludingBankPremisesHeldForSale	6539000
CY2019Q4	ssb	Other Real Estate Owned Bank Premises Held For Sale OtherRealEstateOwnedBankPremisesHeldForSale	5425000
CY2020	us-gaap	Other Real Estate Non Covered Additions OtherRealEstateNonCoveredAdditions	27340000
CY2020	us-gaap	Other Real Estate Non Covered Valuation Adjustments OtherRealEstateNonCoveredValuationAdjustments	1085000
CY2020	us-gaap	Other Real Estate Non Covered Disposals OtherRealEstateNonCoveredDisposals	18610000
CY2020Q4	us-gaap	Other Real Estate Non Covered OtherRealEstateNonCovered	47920000
CY2020Q4	ssb	Other Real Estate Owned Excluding Bank Premises Held For Sale OtherRealEstateOwnedExcludingBankPremisesHeldForSale	11914000
CY2020Q4	ssb	Other Real Estate Owned Bank Premises Held For Sale OtherRealEstateOwnedBankPremisesHeldForSale	36006000
CY2020Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	42
CY2019Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	47
CY2020Q4	ssb	Number Of Real Estate Properties Premises Held For Sale NumberOfRealEstatePropertiesPremisesHeldForSale	33
CY2019Q4	ssb	Number Of Real Estate Properties Premises Held For Sale NumberOfRealEstatePropertiesPremisesHeldForSale	12
CY2020Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	5000000.0
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	836390000
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	497725000
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	257151000
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	180404000
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	579239000
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	317321000
CY2020	us-gaap	Depreciation Depreciation	25300000
CY2019	us-gaap	Depreciation Depreciation	18200000
CY2018	us-gaap	Depreciation Depreciation	18700000
CY2020Q4	ssb	Hosting Arrangement Service Contract Implementation Cost Capitalized New Digital Banking Platform HostingArrangementServiceContractImplementationCostCapitalizedNewDigitalBankingPlatform	2100000
CY2020Q4	ssb	Hosting Arrangement Service Contract Implementation Cost Capitalized To New Public Website HostingArrangementServiceContractImplementationCostCapitalizedToNewPublicWebsite	743000
CY2020Q2	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2019Q4	us-gaap	Goodwill Goodwill	1002900000
CY2018Q4	us-gaap	Goodwill Goodwill	1002900000
CY2020	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	561042000
CY2020Q4	us-gaap	Goodwill Goodwill	1563942000
CY2019Q4	us-gaap	Goodwill Goodwill	1002900000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	258554000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	119501000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	95962000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	69685000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	162592000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	49816000
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	13100000
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14200000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	24634000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	33845000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	30056000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	19790000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	16480000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	37787000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	162592000
CY2020Q4	us-gaap	Interest Bearing Domestic Deposit Certificates Of Deposits InterestBearingDomesticDepositCertificatesOfDeposits	3743271000
CY2019Q4	us-gaap	Interest Bearing Domestic Deposit Certificates Of Deposits InterestBearingDomesticDepositCertificatesOfDeposits	1651399000
CY2020Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	14539928000
CY2019Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	5966496000
CY2020Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	9711338000
CY2019Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	3245306000
CY2020Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	2694011000
CY2019Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1309896000
CY2020Q4	ssb	Other Time Deposits OtherTimeDeposits	5334000
CY2019Q4	ssb	Other Time Deposits OtherTimeDeposits	3999000
CY2020Q4	us-gaap	Deposits Deposits	30693882000
CY2019Q4	us-gaap	Deposits Deposits	12177096000
CY2020Q4	ssb	Certificates Of Deposit250000 Or More CertificatesOfDeposit250000OrMore	814200000
CY2019Q4	ssb	Certificates Of Deposit250000 Or More CertificatesOfDeposit250000OrMore	303200000
CY2020Q4	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	600000000.0
CY2019Q4	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	0
CY2020Q4	ssb	Other Time Deposits OtherTimeDeposits	5300000
CY2020Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	2704310000
CY2020Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	610282000
CY2020Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	210321000
CY2020Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	97640000
CY2020Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	123218000
CY2020Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	2834000
CY2020Q4	us-gaap	Time Deposits TimeDeposits	3748605000
CY2020Q4	us-gaap	Assets Sold Under Agreements To Repurchase Carrying Amounts AssetsSoldUnderAgreementsToRepurchaseCarryingAmounts	394900000
CY2019Q4	us-gaap	Assets Sold Under Agreements To Repurchase Carrying Amounts AssetsSoldUnderAgreementsToRepurchaseCarryingAmounts	242200000
CY2020Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Securities For Repurchase Agreements PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForRepurchaseAgreements	515900000
CY2019Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Securities For Repurchase Agreements PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForRepurchaseAgreements	242200000
CY2020Q4	ssb	Other Short Term Borrowings Average Balance OtherShortTermBorrowingsAverageBalance	745939000
CY2019Q4	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	700000000
CY2019Q4	ssb	Other Short Term Borrowings Average Balance OtherShortTermBorrowingsAverageBalance	538627000
CY2020Q4	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.0440
CY2020Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	390179000
CY2020Q4	ssb	Other Long Term Debt Average Balance OtherLongTermDebtAverageBalance	271493000
CY2019Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	115936000
CY2019Q4	ssb	Other Long Term Debt Average Balance OtherLongTermDebtAverageBalance	116126000
CY2020Q4	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.0440
CY2020Q4	ssb	Other Borrowings And Corporate And Subordinated Debentures OtherBorrowingsAndCorporateAndSubordinatedDebentures	390179000
CY2020Q4	ssb	Other Borrowings Average Balance OtherBorrowingsAverageBalance	1017432000
CY2020Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0158
CY2019Q4	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.0200
CY2019Q4	ssb	Other Borrowings And Corporate And Subordinated Debentures OtherBorrowingsAndCorporateAndSubordinatedDebentures	815936000
CY2019Q4	ssb	Other Borrowings Average Balance OtherBorrowingsAverageBalance	654753000
CY2019Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0257
CY2020Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	0
CY2019Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	700000000.0
CY2020Q4	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	0
CY2020Q4	us-gaap	Assets Held In Trust AssetsHeldInTrust	144300000
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	14100000
CY2019Q4	us-gaap	Assets Held In Trust AssetsHeldInTrust	115800000
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	2700000
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	11000000
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	379179000
CY2020Q4	us-gaap	Other Borrowings OtherBorrowings	390179000
CY2019	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	1877000
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	16245000
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	40375000
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	25275000
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	13296000
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4965000
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	6783000
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	29541000
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	45340000
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	32058000
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-36801000
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1598000
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	12557000
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-9400000
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	200000
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	769000
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-46201000
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1398000
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	13326000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-16660000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	43942000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	45384000
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	21834000
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	48389000
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	47094000
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3077000
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4080000
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	5916000
CY2020	ssb	Effective Income Tax Rate Reconciliation Nondeductible Expense Merger Expenses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMergerExpenses	1344000
CY2020	ssb	Effective Income Tax Rate Reconciliation Increase In Cash Surrender Value Of Bank Owned Life Insurance Policies Amount EffectiveIncomeTaxRateReconciliationIncreaseInCashSurrenderValueOfBankOwnedLifeInsurancePoliciesAmount	-2389000
CY2019	ssb	Effective Income Tax Rate Reconciliation Increase In Cash Surrender Value Of Bank Owned Life Insurance Policies Amount EffectiveIncomeTaxRateReconciliationIncreaseInCashSurrenderValueOfBankOwnedLifeInsurancePoliciesAmount	-1210000
CY2018	ssb	Effective Income Tax Rate Reconciliation Increase In Cash Surrender Value Of Bank Owned Life Insurance Policies Amount EffectiveIncomeTaxRateReconciliationIncreaseInCashSurrenderValueOfBankOwnedLifeInsurancePoliciesAmount	-1261000
CY2020	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	2257000
CY2018	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	2037000
CY2020	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	7138000
CY2019	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	6881000
CY2018	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	3118000
CY2020	ssb	Effective Income Tax Rate Reconciliation Non Deductible Fdic Premiums EffectiveIncomeTaxRateReconciliationNonDeductibleFdicPremiums	1364000
CY2019	ssb	Effective Income Tax Rate Reconciliation Non Deductible Fdic Premiums EffectiveIncomeTaxRateReconciliationNonDeductibleFdicPremiums	133000
CY2018	ssb	Effective Income Tax Rate Reconciliation Non Deductible Fdic Premiums EffectiveIncomeTaxRateReconciliationNonDeductibleFdicPremiums	191000
CY2020	ssb	Effective Income Tax Rate Reconciliation Nondeductible Expense Executive Compensation EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensation	1016000
CY2019	ssb	Effective Income Tax Rate Reconciliation Nondeductible Expense Executive Compensation EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensation	315000
CY2018	ssb	Effective Income Tax Rate Reconciliation Nondeductible Expense Executive Compensation EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensation	305000
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-991000
CY2020	ssb	Effective Income Tax Rate Reconciliation Benefit Of Tax Loss Carryback Cares Act EffectiveIncomeTaxRateReconciliationBenefitOfTaxLossCarrybackCaresAct	31468000
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-2043000
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	993000
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-715000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-16660000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	43942000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	45384000
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020	us-gaap	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseBenefit	26600000
CY2020	ssb	Effective Income Tax Rate Reconciliation Benefit Of Tax Loss Carryback Cares Act EffectiveIncomeTaxRateReconciliationBenefitOfTaxLossCarrybackCaresAct	31500000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	119602000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	14468000
CY2020Q4	ssb	Deferred Tax Assets Other Than Temporary Impairment On Securities DeferredTaxAssetsOtherThanTemporaryImpairmentOnSecurities	268000
CY2019Q4	ssb	Deferred Tax Assets Other Than Temporary Impairment On Securities DeferredTaxAssetsOtherThanTemporaryImpairmentOnSecurities	250000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	2807000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	4975000
CY2020Q4	ssb	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions And Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits	516000
CY2019Q4	ssb	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions And Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits	494000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	13671000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	12475000
CY2020Q4	ssb	Deferred Tax Assets Purchase Accounting Adjustments DeferredTaxAssetsPurchaseAccountingAdjustments	11772000
CY2019Q4	ssb	Deferred Tax Assets Purchase Accounting Adjustments DeferredTaxAssetsPurchaseAccountingAdjustments	24530000
CY2020Q4	ssb	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	899000
CY2019Q4	ssb	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	380000
CY2020Q4	ssb	Deferred Tax Assets Operating Loss And Tax Credit Carryforwards DeferredTaxAssetsOperatingLossAndTaxCreditCarryforwards	26229000
CY2019Q4	ssb	Deferred Tax Assets Operating Loss And Tax Credit Carryforwards DeferredTaxAssetsOperatingLossAndTaxCreditCarryforwards	10347000
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	12826000
CY2020Q4	ssb	Deferred Tax Assets Nonaccrual Interest DeferredTaxAssetsNonaccrualInterest	3141000
CY2020Q4	ssb	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	28179000
CY2019Q4	ssb	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	19146000
CY2019Q4	us-gaap	Deferred Tax Assets Hedging Transactions DeferredTaxAssetsHedgingTransactions	3034000
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	603000
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1040000
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	220513000
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	91139000
CY2020Q4	ssb	Deferred Tax Liabilities Unrealized Losses On Available For Sale Securities DeferredTaxLiabilitiesUnrealizedLossesOnAvailableForSaleSecurities	13026000
CY2019Q4	ssb	Deferred Tax Liabilities Unrealized Losses On Available For Sale Securities DeferredTaxLiabilitiesUnrealizedLossesOnAvailableForSaleSecurities	2373000
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	18326000
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	6585000
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	34648000
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	9979000
CY2019Q4	ssb	Deferred Tax Liabilities Net Deferred Loan Costs DeferredTaxLiabilitiesNetDeferredLoanCosts	9082000
CY2020Q4	ssb	Deferred Tax Liabilities Right Of Use Assets DeferredTaxLiabilitiesRightOfUseAssets	27012000
CY2019Q4	ssb	Deferred Tax Liabilities Right Of Use Assets DeferredTaxLiabilitiesRightOfUseAssets	19465000
CY2020Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	1950000
CY2019Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	474000
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Goodwill DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill	1302000
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Goodwill DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill	810000
CY2020Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	6134000
CY2019Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	6688000
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1534000
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	480000
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	103932000
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	55936000
CY2020Q4	ssb	Deferred Tax Assets Liabilities Net Before Valuation Allowance DeferredTaxAssetsLiabilitiesNetBeforeValuationAllowance	116581000
CY2019Q4	ssb	Deferred Tax Assets Liabilities Net Before Valuation Allowance DeferredTaxAssetsLiabilitiesNetBeforeValuationAllowance	35203000
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	5635000
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3887000
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	110946000
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	31316000
CY2020Q4	ssb	Increase Decrease In Operating Loss Carryforwards Valuation Allowance IncreaseDecreaseInOperatingLossCarryforwardsValuationAllowance	3200000
CY2020	ssb	Deferred Income Tax Expense Benefit Adjustments DeferredIncomeTaxExpenseBenefitAdjustments	48800000
CY2020	ssb	Business Development And Labor Related Expenses BusinessDevelopmentAndLaborRelatedExpenses	8721000
CY2019	ssb	Business Development And Labor Related Expenses BusinessDevelopmentAndLaborRelatedExpenses	8837000
CY2018	ssb	Business Development And Labor Related Expenses BusinessDevelopmentAndLaborRelatedExpenses	9536000
CY2020	ssb	Bankcard Expense BankcardExpense	2224000
CY2019	ssb	Bankcard Expense BankcardExpense	2331000
CY2018	ssb	Bankcard Expense BankcardExpense	1783000
CY2020	ssb	Other Loan Expense OtherLoanExpense	5105000
CY2019	ssb	Other Loan Expense OtherLoanExpense	2087000
CY2018	ssb	Other Loan Expense OtherLoanExpense	2028000
CY2020	ssb	Director And Shareholder Expense DirectorAndShareholderExpense	4175000
CY2019	ssb	Director And Shareholder Expense DirectorAndShareholderExpense	1859000
CY2018	ssb	Director And Shareholder Expense DirectorAndShareholderExpense	2065000
CY2020	ssb	Armored Carrier And Courier Expense ArmoredCarrierAndCourierExpense	2449000
CY2019	ssb	Armored Carrier And Courier Expense ArmoredCarrierAndCourierExpense	1874000
CY2018	ssb	Armored Carrier And Courier Expense ArmoredCarrierAndCourierExpense	2102000
CY2020	us-gaap	Taxes Other TaxesOther	3936000
CY2019	us-gaap	Taxes Other TaxesOther	2131000
CY2018	us-gaap	Taxes Other TaxesOther	1760000
CY2020	ssb	Low Income Housing Tax Credit Partnership Amortization LowIncomeHousingTaxCreditPartnershipAmortization	12977000
CY2019	ssb	Low Income Housing Tax Credit Partnership Amortization LowIncomeHousingTaxCreditPartnershipAmortization	6141000
CY2018	ssb	Low Income Housing Tax Credit Partnership Amortization LowIncomeHousingTaxCreditPartnershipAmortization	3829000
CY2020	ssb	Donation Donation	2121000
CY2019	ssb	Donation Donation	999000
CY2018	ssb	Donation Donation	960000
CY2020	ssb	Other Expense OtherExpense	11137000
CY2019	ssb	Other Expense OtherExpense	5234000
CY2018	ssb	Other Expense OtherExpense	5312000
CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	52845000
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	31493000
CY2018	us-gaap	Other Noninterest Expense OtherNoninterestExpense	29375000
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	120632000
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	186483000
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	178871000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	54756000
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	34561000
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.20
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36530000
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.40
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.90
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	120632000
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	186483000
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	178871000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	54756000
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	34561000
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36530000
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	307000
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	236000
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	246000
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	55063000
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	34797000
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36776000
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.19
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.36
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.86
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	136844000
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	62235000
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	62235000
CY2020	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit	61.42
CY2020	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit	91.35
CY2019	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit	87.30
CY2019	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit	91.35
CY2018	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit	87.30
CY2018	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit	91.35
CY2020Q4	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPayments	32000000
CY2019Q4	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments With Regulatory Approval StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithRegulatoryApproval	157000000.0
CY2019Q2	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments With Regulatory Approval StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithRegulatoryApproval	60000000.0
CY2020Q4	ssb	Amount Available Regulatory Maximum For Loans And Other Fund Transfers AmountAvailableRegulatoryMaximumForLoansAndOtherFundTransfers	479500000
CY2019Q4	ssb	Amount Available Regulatory Maximum For Loans And Other Fund Transfers AmountAvailableRegulatoryMaximumForLoansAndOtherFundTransfers	246400000
CY2019Q2	ssb	Defined Contribution Plan Termination Expense DefinedContributionPlanTerminationExpense	9500000
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	7700000
CY2020	ssb	Defined Pension Plan Write Off Of Assets DefinedPensionPlanWriteOffOfAssets	1800000
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	0
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	0
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	0
CY2020Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	0
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0410
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0350
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-309000
CY2019	us-gaap	Defined Benefit Plan Cost Of Providing Special Or Contractual Termination Benefit Recognized During Period DefinedBenefitPlanCostOfProvidingSpecialOrContractualTerminationBenefitRecognizedDuringPeriod	9526000
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	10962000
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6659000
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	7948000
CY2020	us-gaap	Other Postretirement Benefit Expense OtherPostretirementBenefitExpense	2862000
CY2019	us-gaap	Other Postretirement Benefit Expense OtherPostretirementBenefitExpense	2343000
CY2018	us-gaap	Other Postretirement Benefit Expense OtherPostretirementBenefitExpense	368000
CY2020	ssb	Defined Benefit Plan Net Periodic Benefit Cost Post Retirement Benefits DefinedBenefitPlanNetPeriodicBenefitCostPostRetirementBenefits	43000
CY2019	ssb	Defined Benefit Plan Net Periodic Benefit Cost Post Retirement Benefits DefinedBenefitPlanNetPeriodicBenefitCostPostRetirementBenefits	144000
CY2018	ssb	Defined Benefit Plan Net Periodic Benefit Cost Post Retirement Benefits DefinedBenefitPlanNetPeriodicBenefitCostPostRetirementBenefits	254000
CY2020	ssb	Defined Contribution Plan Employer Contribution Percent DefinedContributionPlanEmployerContributionPercent	1
CY2020	ssb	Number Of Post Retirement And Life Insurance Benefit Plans NumberOfPostRetirementAndLifeInsuranceBenefitPlans	2
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	131216
CY2020Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	256425
CY2020	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P4Y6M
CY2020Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	59.01
CY2020Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	256425
CY2020Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	59.01
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	404000
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	494000
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	1081000
CY2020	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2	P4Y6M
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	8804000
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	113400000
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	87400000
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	118300000
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	88800000
CY2020Q4	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P25Y
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	289000
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	44000
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	14266000
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	430000
CY2020	us-gaap	Lease Cost LeaseCost	16084000
CY2019	us-gaap	Lease Cost LeaseCost	9728000
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	42000
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	255000
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	12876000
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	7725000
CY2020	ssb	Increase Decrease In Operating Cash Flow Change In Asset And Liability IncreaseDecreaseInOperatingCashFlowChangeInAssetAndLiability	-9123000
CY2019	ssb	Increase Decrease In Operating Cash Flow Change In Asset And Liability IncreaseDecreaseInOperatingCashFlowChangeInAssetAndLiability	1457000
CY2020	ssb	Right Of Use Asset Obtained During Period RightOfUseAssetObtainedDuringPeriod	43583000
CY2019	ssb	Right Of Use Asset Obtained During Period RightOfUseAssetObtainedDuringPeriod	10239000
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	5374000
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P7Y4M24D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P11Y6M3D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P14Y1M20D
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.017
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.033
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.039
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	15753000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	14508000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	13482000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	12212000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	10747000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	78711000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	145413000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	27092000
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	118321000
CY2020Q4	ssb	Operating Lease Lease Not Yet Commenced Amount OperatingLeaseLeaseNotYetCommencedAmount	3500000
CY2020	us-gaap	Loss Contingency Disclosures LossContingencyDisclosures	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 12pt 0pt;"><b style="font-weight:bold;">Note 23—Contingent Liabilities</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt 0pt 12pt 0pt;"><span style="white-space:pre-wrap;">The Company has been named as defendant in various legal actions, arising from its normal business activities, in which damages in various amounts are claimed. The Company is also exposed to litigation risk related to the prior business activities of banks acquired through whole bank acquisitions. Although the amount of any ultimate liability with respect to such matters cannot be determined, in the opinion of management, any such liability will not have a material effect on the Company’s consolidated financial statements.</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt 0pt 12pt 0pt;">The Company and its subsidiary are involved at times in certain litigation arising in the normal course of business. In the opinion of management as of December 31, 2020, there is no pending or threatened litigation that will have a material effect on the Company’s consolidated financial position or results of operations.</p>
CY2020Q4	us-gaap	Loss Contingency Pending Claims Number LossContingencyPendingClaimsNumber	0
CY2020Q4	ssb	Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.045
CY2020Q4	us-gaap	Common Equity Tier One Capital Ratio CommonEquityTierOneCapitalRatio	6
CY2020Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	4
CY2020Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	8
CY2020Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	10.00
CY2020Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	3010174000
CY2020Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	8.27
CY2019Q1	ssb	Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Capital Conversion Buffer CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssetsCapitalConversionBuffer	0.025
CY2020Q4	ssb	Common Equity Tier One Risk Based Capital CommonEquityTierOneRiskBasedCapital	3010174000
CY2020Q4	ssb	Common Equity Tier One Risk Based Capital To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets	0.1177
CY2020Q4	ssb	Common Equity Tier One Risk Based Capital Required To Be Well Capitalized CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalized	1662128000
CY2020Q4	ssb	Common Equity Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0650
CY2020Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	3010174000
CY2020Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	11.77
CY2020Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized TierOneRiskBasedCapitalRequiredToBeWellCapitalized	2045696000
CY2020Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	8.00
CY2020Q4	us-gaap	Capital Capital	3642039000
CY2020Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	14.24
CY2020Q4	us-gaap	Capital Required To Be Well Capitalized CapitalRequiredToBeWellCapitalized	2557120000
CY2020Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized TierOneLeverageCapitalRequiredToBeWellCapitalized	1818919000
CY2020Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	5.00
CY2019Q4	ssb	Common Equity Tier One Risk Based Capital CommonEquityTierOneRiskBasedCapital	1326725000
CY2019Q4	ssb	Common Equity Tier One Risk Based Capital To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets	0.1130
CY2019Q4	ssb	Common Equity Tier One Risk Based Capital Required To Be Well Capitalized CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalized	763495000
CY2019Q4	ssb	Common Equity Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0650
CY2019Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	1438995000
CY2019Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	12.25
CY2019Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized TierOneRiskBasedCapitalRequiredToBeWellCapitalized	939686000
CY2019Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	8.00
CY2019Q4	us-gaap	Capital Capital	1501321000
CY2019Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	12.78
CY2019Q4	us-gaap	Capital Required To Be Well Capitalized CapitalRequiredToBeWellCapitalized	1174607000
CY2019Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	10.00
CY2019Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	1438995000
CY2019Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	9.73
CY2019Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized TierOneLeverageCapitalRequiredToBeWellCapitalized	739664000
CY2019Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	5.00
CY2020Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	19342657000
CY2020	us-gaap	Derivative Gain On Derivative DerivativeGainOnDerivative	813899000
CY2020	us-gaap	Derivative Loss On Derivative DerivativeLossOnDerivative	804832000
CY2019Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	2051663000
CY2019	us-gaap	Derivative Gain On Derivative DerivativeGainOnDerivative	16252000
CY2019	us-gaap	Derivative Loss On Derivative DerivativeLossOnDerivative	31273000
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	10800000
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-10700000
CY2020Q4	ssb	Interest Rate Derivative Instruments Not Designated As Hedging Instruments Termination Value InterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsTerminationValue	38800000
CY2020Q4	us-gaap	Cash Flow Hedge Derivative Instrument Assets At Fair Value CashFlowHedgeDerivativeInstrumentAssetsAtFairValue	30300000
CY2020Q4	us-gaap	Cash Flow Hedge Derivative Instrument Liabilities At Fair Value CashFlowHedgeDerivativeInstrumentLiabilitiesAtFairValue	0
CY2019Q4	us-gaap	Cash Flow Hedge Derivative Instrument Liabilities At Fair Value CashFlowHedgeDerivativeInstrumentLiabilitiesAtFairValue	13800000
CY2019	us-gaap	Derivative Excluded Component Gain Loss Recognized In Earnings DerivativeExcludedComponentGainLossRecognizedInEarnings	0
CY2020	us-gaap	Derivative Excluded Component Gain Loss Recognized In Earnings DerivativeExcludedComponentGainLossRecognizedInEarnings	0
CY2019	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	0
CY2020	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	0
CY2020Q4	us-gaap	Interest Rate Derivative Assets At Fair Value InterestRateDerivativeAssetsAtFairValue	802800000
CY2020Q4	us-gaap	Interest Rate Derivative Liabilities At Fair Value InterestRateDerivativeLiabilitiesAtFairValue	802700000
CY2020Q4	us-gaap	Interest Rate Derivatives At Fair Value Net InterestRateDerivativesAtFairValueNet	17000
CY2019Q4	us-gaap	Interest Rate Derivative Assets At Fair Value InterestRateDerivativeAssetsAtFairValue	15300000
CY2019Q4	us-gaap	Interest Rate Derivative Liabilities At Fair Value InterestRateDerivativeLiabilitiesAtFairValue	16500000
CY2019Q4	us-gaap	Interest Rate Derivatives At Fair Value Net InterestRateDerivativesAtFairValueNet	1100000
CY2020	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	119000
CY2019	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-789000
CY2020	ssb	Percentage Of Mortgage Loan Securitizations And Sales PercentageOfMortgageLoanSecuritizationsAndSales	0.851
CY2020	ssb	Mortgage Loan Sold MortgageLoanSold	3200000
CY2019	ssb	Mortgage Loan Sold MortgageLoanSold	812300000
CY2020	ssb	Mortgage Loan Securitizations And Sales MortgageLoanSecuritizationsAndSales	2700000000
CY2019	ssb	Mortgage Loan Securitizations And Sales MortgageLoanSecuritizationsAndSales	660600000
CY2019	ssb	Percentage Of Mortgage Loan Securitizations And Sales PercentageOfMortgageLoanSecuritizationsAndSales	0.813
CY2020Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	290500000
CY2019Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	59400000
CY2020	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	11200000
CY2020	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	12900000
CY2019	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	5900000
CY2019	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	6000000.0
CY2020Q4	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	105600000
CY2019Q4	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	76900000
CY2019Q4	us-gaap	Equity Method Investment Aggregate Cost EquityMethodInvestmentAggregateCost	137100000
CY2020Q4	us-gaap	Equity Method Investment Aggregate Cost EquityMethodInvestmentAggregateCost	137100000
CY2020Q4	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	42700000
CY2019Q4	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	35700000
CY2020Q4	ssb	Qualified Affordable Housing Project Investments Repayment QualifiedAffordableHousingProjectInvestmentsRepayment	0

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$SSB
SouthState Corp Stock $ssb

2020 Q4 Form 10-K Financial Statement

#000155837021001976 Filed on February 26, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SSB SouthState Corp Stock $ssb

2020 Q4 Form 10-K Financial Statement

#000155837021001976 Filed on February 26, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SSB
SouthState Corp Stock $ssb