10-K Filing

EASTERN BANKSHARES, INC. CIK: 1810546 FY 2022

Filing Information

Form Type	10-K
Accession Number	`0001628280-23-005001`
Period End Date	20221231
Filing Date	20230224
Fiscal Year	2022
Fiscal Period	FY
XBRL Instance	ebc-20221231_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 99 Income Statement 117 Cash Flow Statement 197 Stockholders Equity 43 Comprehensive Income 18

Balance Sheet 99 line items

Line Item	Tag	Value	Unit	Period
Available-for-sale debt securities, amortized cost	`DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss`	$8.59B	USD	Point-in-time
Available-for-sale debt securities, amortized cost	`DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss`	$7.83B	USD	Point-in-time
Held-to-maturity debt securities, fair value	`HeldToMaturitySecuritiesFairValue`	-	USD	Point-in-time
Held-to-maturity debt securities, fair value	`HeldToMaturitySecuritiesFairValue`	$423.23M	USD	Point-in-time
Common stock, par value (in shares)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in shares)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	1.00B	shares	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	1.00B	shares	Point-in-time
Common stock issued (in shares)	`CommonStockSharesIssued`	176.17M	shares	Point-in-time
Common stock issued (in shares)	`CommonStockSharesIssued`	186.31M	shares	Point-in-time
Common stock issued (in shares)	`CommonStockSharesIssued`	186.76M	shares	Point-in-time
Common stock outstanding (in shares)	`CommonStockSharesOutstanding`	176.17M	shares	Point-in-time
Common stock outstanding (in shares)	`CommonStockSharesOutstanding`	186.31M	shares	Point-in-time
Common stock outstanding (in shares)	`CommonStockSharesOutstanding`	186.76M	shares	Point-in-time
Cash and due from banks	`CashAndDueFromBanks`	$106.04M	USD	Point-in-time
Cash and due from banks	`CashAndDueFromBanks`	$144.63M	USD	Point-in-time
Short-term investments	`ShortTermInvestments`	$1.09B	USD	Point-in-time
Short-term investments	`ShortTermInvestments`	$63.47M	USD	Point-in-time
Cash and cash equivalents	`CashCashEquivalentsAndShortTermInvestments`	$1.23B	USD	Point-in-time
Cash and cash equivalents	`CashCashEquivalentsAndShortTermInvestments`	$169.50M	USD	Point-in-time
Available for sale (amortized cost $7,825,435 and $8,587,179, respectively)	`DebtSecuritiesAvailableForSaleExcludingAccruedInterest`	$6.69B	USD	Point-in-time
Available for sale (amortized cost $7,825,435 and $8,587,179, respectively)	`DebtSecuritiesAvailableForSaleExcludingAccruedInterest`	$8.51B	USD	Point-in-time
Held to maturity (fair value $423,226 and $, respectively)	`DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss`	$476.65M	USD	Point-in-time
Held to maturity (fair value $423,226 and $, respectively)	`DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss`	-	USD	Point-in-time
Total securities	`DebtSecurities`	$7.17B	USD	Point-in-time
Total securities	`DebtSecurities`	$8.51B	USD	Point-in-time
Loans held for sale	`LoansReceivableHeldForSaleAmount`	$4.54M	USD	Point-in-time
Loans held for sale	`LoansReceivableHeldForSaleAmount`	$1.21M	USD	Point-in-time
Total loans	`FinancingReceivableBeforeAllowanceForCreditLossAndFee`	$13.58B	USD	Point-in-time
Total loans	`FinancingReceivableBeforeAllowanceForCreditLossAndFee`	$12.28B	USD	Point-in-time
Allowance for loan losses	`FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest`	$142.21M	USD	Point-in-time
Allowance for loan losses	`FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest`	$113.03M	USD	Point-in-time
Allowance for loan losses	`FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest`	$97.79M	USD	Point-in-time
Unamortized premiums, net of unearned discounts and deferred fees, net of costs	`FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount`	$-13.00M	USD	Point-in-time
Unamortized premiums, net of unearned discounts and deferred fees, net of costs	`FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount`	$-26.44M	USD	Point-in-time
Net loans	`FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss`	$13.42B	USD	Point-in-time
Net loans	`FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss`	$12.16B	USD	Point-in-time
Federal Home Loan Bank stock, at cost	`FederalHomeLoanBankStock`	$41.36M	USD	Point-in-time
Federal Home Loan Bank stock, at cost	`FederalHomeLoanBankStock`	$10.90M	USD	Point-in-time
Premises and equipment	`PropertyPlantAndEquipmentIncludingAssetsHeldForSaleNotPartOfDisposalGroup`	$80.98M	USD	Point-in-time
Premises and equipment	`PropertyPlantAndEquipmentIncludingAssetsHeldForSaleNotPartOfDisposalGroup`	$62.66M	USD	Point-in-time
Bank-owned life insurance	`BankOwnedLifeInsurance`	$157.09M	USD	Point-in-time
Bank-owned life insurance	`BankOwnedLifeInsurance`	$160.79M	USD	Point-in-time
Goodwill and other intangibles, net	`IntangibleAssetsNetIncludingGoodwill`	$649.70M	USD	Point-in-time
Goodwill and other intangibles, net	`IntangibleAssetsNetIncludingGoodwill`	$661.13M	USD	Point-in-time
Deferred income taxes, net	`DeferredIncomeTaxAssetsNet`	$76.53M	USD	Point-in-time
Deferred income taxes, net	`DeferredIncomeTaxAssetsNet`	$331.65M	USD	Point-in-time
Prepaid expenses	`PrepaidExpenseCurrentAndNoncurrent`	$165.90M	USD	Point-in-time
Prepaid expenses	`PrepaidExpenseCurrentAndNoncurrent`	$179.33M	USD	Point-in-time
Other assets	`OtherAssets`	$461.58M	USD	Point-in-time
Other assets	`OtherAssets`	$456.08M	USD	Point-in-time
Total assets	`Assets`	$23.51B	USD	Point-in-time
Total assets	`Assets`	$15.96B	USD	Point-in-time
Total assets	`Assets`	$22.65B	USD	Point-in-time
Demand	`DemandDepositAccounts`	$6.24B	USD	Point-in-time
Demand	`DemandDepositAccounts`	$7.02B	USD	Point-in-time
Interest checking accounts	`InterestBearingDomesticDepositChecking`	$4.57B	USD	Point-in-time
Interest checking accounts	`InterestBearingDomesticDepositChecking`	$4.48B	USD	Point-in-time
Savings accounts	`DepositsSavingsDeposits`	$1.83B	USD	Point-in-time
Savings accounts	`DepositsSavingsDeposits`	$2.08B	USD	Point-in-time
Money market investment	`DepositsMoneyMarketDeposits`	$4.71B	USD	Point-in-time
Money market investment	`DepositsMoneyMarketDeposits`	$5.53B	USD	Point-in-time
Certificates of deposit	`TimeDeposits`	$1.62B	USD	Point-in-time
Certificates of deposit	`TimeDeposits`	$526.38M	USD	Point-in-time
Total deposits	`Deposits`	$18.97B	USD	Point-in-time
Total deposits	`Deposits`	$19.63B	USD	Point-in-time
Short-term Federal Home Loan Bank advances	`FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate`	$17.00K	USD	Point-in-time
Short-term Federal Home Loan Bank advances	`FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate`	$691.30M	USD	Point-in-time
Escrow deposits of borrowers	`EscrowDepositsOfBorrowers`	$22.31M	USD	Point-in-time
Escrow deposits of borrowers	`EscrowDepositsOfBorrowers`	$20.26M	USD	Point-in-time
Interest rate swap collateral funds	`InterestRateSwapCollateralFunds`	$14.43M	USD	Point-in-time
Interest rate swap collateral funds	`InterestRateSwapCollateralFunds`	-	USD	Point-in-time
Long-term Federal Home Loan Bank advances	`FederalHomeLoanBankAdvancesLongTerm`	$12.79M	USD	Point-in-time
Long-term Federal Home Loan Bank advances	`FederalHomeLoanBankAdvancesLongTerm`	$14.00M	USD	Point-in-time
Total borrowed funds	`DebtLongtermAndShorttermCombinedAmount`	$34.28M	USD	Point-in-time
Total borrowed funds	`DebtLongtermAndShorttermCombinedAmount`	$740.83M	USD	Point-in-time
Other liabilities	`OtherLiabilities`	$459.88M	USD	Point-in-time
Other liabilities	`OtherLiabilities`	$443.19M	USD	Point-in-time
Total liabilities	`Liabilities`	$20.11B	USD	Point-in-time
Total liabilities	`Liabilities`	$12.54B	USD	Point-in-time
Total liabilities	`Liabilities`	$20.18B	USD	Point-in-time
Commitments and contingencies (see Note 18)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (see Note 18)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common shares, $0.01 par value, 1,000,000,000 shares authorized; 176,172,073 and 186,305,332 shares issued and outstanding at December 31, 2022 and 2021, respectively	`CommonStockValue`	$1.76M	USD	Point-in-time
Common shares, $0.01 par value, 1,000,000,000 shares authorized; 176,172,073 and 186,305,332 shares issued and outstanding at December 31, 2022 and 2021, respectively	`CommonStockValue`	$1.86M	USD	Point-in-time
Additional paid in capital	`AdditionalPaidInCapital`	$1.84B	USD	Point-in-time
Additional paid in capital	`AdditionalPaidInCapital`	$1.65B	USD	Point-in-time
Unallocated common shares held by the Employee Stock Ownership Plan	`UnearnedESOPShares`	$137.70M	USD	Point-in-time
Unallocated common shares held by the Employee Stock Ownership Plan	`UnearnedESOPShares`	$142.71M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.77B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.88B	USD	Point-in-time
Accumulated other comprehensive income, net of tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-56.70M	USD	Point-in-time
Accumulated other comprehensive income, net of tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-923.19M	USD	Point-in-time
Total shareholders equity	`StockholdersEquity`	$2.47B	USD	Point-in-time
Total shareholders equity	`StockholdersEquity`	$1.60B	USD	Point-in-time
Total shareholders equity	`StockholdersEquity`	$3.43B	USD	Point-in-time
Total shareholders equity	`StockholdersEquity`	$3.41B	USD	Point-in-time
Total liabilities and shareholders equity	`LiabilitiesAndStockholdersEquity`	$22.65B	USD	Point-in-time
Total liabilities and shareholders equity	`LiabilitiesAndStockholdersEquity`	$23.51B	USD	Point-in-time

Income Statement 117 line items

Line Item	Tag	Value	Unit	Period
Interest and fees on loans	`InterestAndFeeIncomeLoansAndLeases`	$372.15M	USD	Annual
Interest and fees on loans	`InterestAndFeeIncomeLoansAndLeases`	$476.04M	USD	Annual
Interest and fees on loans	`InterestAndFeeIncomeLoansAndLeases`	$367.58M	USD	Annual
Taxable interest and dividends on available for sale securities	`TaxableInterestAndDividendsOnAvailableForSaleSecurities`	$118.69M	USD	Annual
Taxable interest and dividends on available for sale securities	`TaxableInterestAndDividendsOnAvailableForSaleSecurities`	$31.82M	USD	Annual
Taxable interest and dividends on available for sale securities	`TaxableInterestAndDividendsOnAvailableForSaleSecurities`	$58.31M	USD	Annual
Non-taxable interest and dividends on available for sale securities	`NontaxableInterestAndDividendsOnAvailableForSaleSecurities`	$7.18M	USD	Annual
Non-taxable interest and dividends on available for sale securities	`NontaxableInterestAndDividendsOnAvailableForSaleSecurities`	$7.38M	USD	Annual
Non-taxable interest and dividends on available for sale securities	`NontaxableInterestAndDividendsOnAvailableForSaleSecurities`	$7.59M	USD	Annual
Interest on federal funds sold and other short-term investments	`InterestOnFederalFundsSoldAndOtherShortTermInvestments`	$1.89M	USD	Annual
Interest on federal funds sold and other short-term investments	`InterestOnFederalFundsSoldAndOtherShortTermInvestments`	$1.76M	USD	Annual
Interest on federal funds sold and other short-term investments	`InterestOnFederalFundsSoldAndOtherShortTermInvestments`	$3.27M	USD	Annual
Interest and dividends on trading securities	`InterestAndDividendIncomeSecurities`	$6.00K	USD	Annual
Interest and dividends on trading securities	`InterestAndDividendIncomeSecurities`	-	USD	Annual
Interest and dividends on trading securities	`InterestAndDividendIncomeSecurities`	-	USD	Annual
Total interest and dividend income	`InterestAndDividendIncomeOperating`	$413.33M	USD	Annual
Total interest and dividend income	`InterestAndDividendIncomeOperating`	$435.16M	USD	Annual
Total interest and dividend income	`InterestAndDividendIncomeOperating`	$605.18M	USD	Annual
Interest on deposits	`InterestExpenseDeposits`	$5.17M	USD	Annual
Interest on deposits	`InterestExpenseDeposits`	$28.62M	USD	Annual
Interest on deposits	`InterestExpenseDeposits`	$11.31M	USD	Annual
Interest on borrowings	`InterestExpenseBorrowings`	$165.00K	USD	Annual
Interest on borrowings	`InterestExpenseBorrowings`	$762.00K	USD	Annual
Interest on borrowings	`InterestExpenseBorrowings`	$8.51M	USD	Annual
Total interest expense	`InterestExpense`	$12.08M	USD	Annual
Total interest expense	`InterestExpense`	$5.33M	USD	Annual
Total interest expense	`InterestExpense`	$37.13M	USD	Annual
Net interest income	`InterestIncomeExpenseNet`	$429.83M	USD	Annual
Net interest income	`InterestIncomeExpenseNet`	$401.25M	USD	Annual
Net interest income	`InterestIncomeExpenseNet`	$568.05M	USD	Annual
Provision for (release of) allowance for loan losses	`FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal`	$-9.69M	USD	Annual
Provision for (release of) allowance for loan losses	`FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal`	$38.80M	USD	Annual
Provision for (release of) allowance for loan losses	`FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal`	$17.93M	USD	Annual
Net interest income after provision for (release of) loan losses	`InterestIncomeExpenseAfterProvisionForLoanLoss`	$362.45M	USD	Annual
Net interest income after provision for (release of) loan losses	`InterestIncomeExpenseAfterProvisionForLoanLoss`	$439.51M	USD	Annual
Net interest income after provision for (release of) loan losses	`InterestIncomeExpenseAfterProvisionForLoanLoss`	$550.13M	USD	Annual
Insurance commissions	`BrokerageCommissionsRevenue`	$94.70M	USD	Annual
Insurance commissions	`BrokerageCommissionsRevenue`	$99.23M	USD	Annual
Insurance commissions	`BrokerageCommissionsRevenue`	$94.50M	USD	Annual
Service charges on deposit accounts	`ServiceChargesOnDepositAccounts`	$30.39M	USD	Annual
Service charges on deposit accounts	`ServiceChargesOnDepositAccounts`	$24.27M	USD	Annual
Service charges on deposit accounts	`ServiceChargesOnDepositAccounts`	$21.56M	USD	Annual
Trust and investment advisory fees	`TrustAndInvestmentAdvisoryFees`	$23.59M	USD	Annual
Trust and investment advisory fees	`TrustAndInvestmentAdvisoryFees`	$24.59M	USD	Annual
Trust and investment advisory fees	`TrustAndInvestmentAdvisoryFees`	$21.10M	USD	Annual
Debit card processing fees	`DebitCardProcessingFees`	$12.64M	USD	Annual
Debit card processing fees	`DebitCardProcessingFees`	$12.12M	USD	Annual
Debit card processing fees	`DebitCardProcessingFees`	$10.28M	USD	Annual
Interest rate swap income (losses)	`InterestRateSwapIncomeLosses`	$-1.38M	USD	Annual
Interest rate swap income (losses)	`InterestRateSwapIncomeLosses`	$5.63M	USD	Annual
Interest rate swap income (losses)	`InterestRateSwapIncomeLosses`	$6.01M	USD	Annual
(Losses) income from investments held in rabbi trusts	`IncomeFromInvestmentsHeldInRabbiTrusts`	$10.34M	USD	Annual
(Losses) income from investments held in rabbi trusts	`IncomeFromInvestmentsHeldInRabbiTrusts`	$-10.76M	USD	Annual
(Losses) income from investments held in rabbi trusts	`IncomeFromInvestmentsHeldInRabbiTrusts`	$10.22M	USD	Annual
Losses on trading securities, net	`TradingGainsLosses`	-	USD	Annual
Losses on trading securities, net	`TradingGainsLosses`	$-4.00K	USD	Annual
Losses on trading securities, net	`TradingGainsLosses`	-	USD	Annual
Gains on sales of mortgage loans held for sale, net	`GainLossOnSaleOfMortgageLoans`	$3.60M	USD	Annual
Gains on sales of mortgage loans held for sale, net	`GainLossOnSaleOfMortgageLoans`	$248.00K	USD	Annual
Gains on sales of mortgage loans held for sale, net	`GainLossOnSaleOfMortgageLoans`	$7.07M	USD	Annual
(Losses) gains on sales of securities available for sale, net	`DebtSecuritiesAvailableForSaleRealizedGainLoss`	$1.17M	USD	Annual
(Losses) gains on sales of securities available for sale, net	`DebtSecuritiesAvailableForSaleRealizedGainLoss`	$-3.16M	USD	Annual
(Losses) gains on sales of securities available for sale, net	`DebtSecuritiesAvailableForSaleRealizedGainLoss`	$288.00K	USD	Annual
Other	`NoninterestIncomeOther`	$17.96M	USD	Annual
Other	`NoninterestIncomeOther`	$16.85M	USD	Annual
Other	`NoninterestIncomeOther`	$14.63M	USD	Annual
Total noninterest income	`NoninterestIncome`	$178.37M	USD	Annual
Total noninterest income	`NoninterestIncome`	$176.16M	USD	Annual
Total noninterest income	`NoninterestIncome`	$193.16M	USD	Annual
Salaries and employee benefits	`LaborAndRelatedExpense`	$261.83M	USD	Annual
Salaries and employee benefits	`LaborAndRelatedExpense`	$295.92M	USD	Annual
Salaries and employee benefits	`LaborAndRelatedExpense`	$298.19M	USD	Annual
Office occupancy and equipment	`OccupancyNet`	$40.47M	USD	Annual
Office occupancy and equipment	`OccupancyNet`	$33.80M	USD	Annual
Office occupancy and equipment	`OccupancyNet`	$40.76M	USD	Annual
Data processing	`InformationTechnologyAndDataProcessing`	$50.84M	USD	Annual
Data processing	`InformationTechnologyAndDataProcessing`	$45.26M	USD	Annual
Data processing	`InformationTechnologyAndDataProcessing`	$57.27M	USD	Annual
Professional services	`ProfessionalFees`	$16.81M	USD	Annual
Professional services	`ProfessionalFees`	$21.88M	USD	Annual
Professional services	`ProfessionalFees`	$16.45M	USD	Annual
Charitable contributions	`CharitableContributions`	-	USD	Annual
Charitable contributions	`CharitableContributions`	-	USD	Annual
Charitable contributions	`CharitableContributions`	$95.27M	USD	Annual
Marketing	`MarketingExpense`	$8.88M	USD	Annual
Marketing	`MarketingExpense`	$8.74M	USD	Annual
Marketing	`MarketingExpense`	$9.54M	USD	Annual
Loan expenses	`LoanProcessingFee`	$9.11M	USD	Annual
Loan expenses	`LoanProcessingFee`	$6.38M	USD	Annual
Loan expenses	`LoanProcessingFee`	$9.18M	USD	Annual
FDIC insurance	`FederalDepositInsuranceCorporationPremiumExpense`	$4.23M	USD	Annual
FDIC insurance	`FederalDepositInsuranceCorporationPremiumExpense`	$3.73M	USD	Annual
FDIC insurance	`FederalDepositInsuranceCorporationPremiumExpense`	$6.25M	USD	Annual
Amortization of intangible assets	`AmortizationOfIntangibleAssets`	$2.86M	USD	Annual
Amortization of intangible assets	`AmortizationOfIntangibleAssets`	$3.86M	USD	Annual
Amortization of intangible assets	`AmortizationOfIntangibleAssets`	$2.51M	USD	Annual
Other	`OtherNoninterestExpense`	$10.26M	USD	Annual
Other	`OtherNoninterestExpense`	$30.53M	USD	Annual
Other	`OtherNoninterestExpense`	$27.67M	USD	Annual
Total noninterest expense	`NoninterestExpense`	$469.60M	USD	Annual
Total noninterest expense	`NoninterestExpense`	$504.92M	USD	Annual
Total noninterest expense	`NoninterestExpense`	$443.96M	USD	Annual
Income before income tax expense	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$256.69M	USD	Annual
Income before income tax expense	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$35.90M	USD	Annual
Income before income tax expense	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$188.71M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$34.05M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$13.16M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$56.93M	USD	Annual
Net income	`NetIncomeLoss`	$199.76M	USD	Annual
Net income	`NetIncomeLoss`	$22.74M	USD	Annual
Net income	`NetIncomeLoss`	$154.66M	USD	Annual
Basic earnings per share (in dollars per share)	`EarningsPerShareBasic`	$0.13	USD	Annual
Basic earnings per share (in dollars per share)	`EarningsPerShareBasic`	$1.21	USD	Annual
Basic earnings per share (in dollars per share)	`EarningsPerShareBasic`	$0.90	USD	Annual
Diluted earnings per share (in dollars per share)	`EarningsPerShareDiluted`	$0.90	USD	Annual
Diluted earnings per share (in dollars per share)	`EarningsPerShareDiluted`	$0.13	USD	Annual
Diluted earnings per share (in dollars per share)	`EarningsPerShareDiluted`	$1.21	USD	Annual

Cash Flow Statement 197 line items

Line Item	Tag	Value	Unit	Period
Net income	`NetIncomeLoss`	$199.76M	USD	Annual
Net income	`NetIncomeLoss`	$22.74M	USD	Annual
Net income	`NetIncomeLoss`	$154.66M	USD	Annual
Provision for (release of) allowance for loan losses	`FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal`	$-9.69M	USD	Annual
Provision for (release of) allowance for loan losses	`FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal`	$38.80M	USD	Annual
Provision for (release of) allowance for loan losses	`FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal`	$17.93M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$14.48M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$15.83M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$14.96M	USD	Annual
Accretion of deferred loan fees and premiums, net	`ChangeInUnamortizedNetLoanCostsAndPremiums`	$-1.44M	USD	Annual
Accretion of deferred loan fees and premiums, net	`ChangeInUnamortizedNetLoanCostsAndPremiums`	$-27.99M	USD	Annual
Accretion of deferred loan fees and premiums, net	`ChangeInUnamortizedNetLoanCostsAndPremiums`	$-14.57M	USD	Annual
Deferred income tax expense (benefit)	`DeferredIncomeTaxExpenseBenefit`	$-20.36M	USD	Annual
Issuance of common shares donated to the Eastern Bank Foundation	`StockIssuedDuringPeriodValueCharitableDonations`	$91.29M	USD	Annual
Deferred income tax expense (benefit)	`DeferredIncomeTaxExpenseBenefit`	$-5.31M	USD	Annual
Deferred income tax expense (benefit)	`DeferredIncomeTaxExpenseBenefit`	$6.02M	USD	Annual
Amortization of investment security premiums and discounts, net	`AmortizationOfDebtDiscountPremium`	$5.58M	USD	Annual
Amortization of investment security premiums and discounts, net	`AmortizationOfDebtDiscountPremium`	$18.27M	USD	Annual
Amortization of investment security premiums and discounts, net	`AmortizationOfDebtDiscountPremium`	$16.71M	USD	Annual
Right-of-use asset amortization	`OperatingLeaseRightOfUseAssetAmortizationExpense`	$12.70M	USD	Annual
Right-of-use asset amortization	`OperatingLeaseRightOfUseAssetAmortizationExpense`	$12.08M	USD	Annual
Right-of-use asset amortization	`OperatingLeaseRightOfUseAssetAmortizationExpense`	$13.02M	USD	Annual
Share-based compensation	`ShareBasedCompensation`	-	USD	Annual
Share-based compensation	`ShareBasedCompensation`	-	USD	Annual
Share-based compensation	`ShareBasedCompensation`	$10.51M	USD	Annual
Increase in cash surrender value of bank-owned life insurance	`IncreaseDecreaseInInsuranceSettlementsReceivable`	$3.70M	USD	Annual
Increase in cash surrender value of bank-owned life insurance	`IncreaseDecreaseInInsuranceSettlementsReceivable`	$2.35M	USD	Annual
Increase in cash surrender value of bank-owned life insurance	`IncreaseDecreaseInInsuranceSettlementsReceivable`	$2.19M	USD	Annual
Loss (gain) on life insurance benefits	`BankOwnedLifeInsuranceIncomeExpense`	$-663.00K	USD	Annual
Loss (gain) on life insurance benefits	`BankOwnedLifeInsuranceIncomeExpense`	$174.00K	USD	Annual
Loss (gain) on life insurance benefits	`BankOwnedLifeInsuranceIncomeExpense`	$1.81M	USD	Annual
Loss (gain) on sales of securities available for sale, net	`DebtSecuritiesAvailableForSaleRealizedGainLoss`	$1.17M	USD	Annual
Loss (gain) on sales of securities available for sale, net	`DebtSecuritiesAvailableForSaleRealizedGainLoss`	$-3.16M	USD	Annual
Loss (gain) on sales of securities available for sale, net	`DebtSecuritiesAvailableForSaleRealizedGainLoss`	$288.00K	USD	Annual
(Gain) loss on sales of bank premises and equipment, net	`GainLossOnDispositionOfAssets`	$1.41M	USD	Annual
(Gain) loss on sales of bank premises and equipment, net	`GainLossOnDispositionOfAssets`	$-4.71M	USD	Annual
(Gain) loss on sales of bank premises and equipment, net	`GainLossOnDispositionOfAssets`	$-73.00K	USD	Annual
Loss on lease termination/modification, net	`GainLossOnTerminationOfLease`	$-593.00K	USD	Annual
Loss on lease termination/modification, net	`GainLossOnTerminationOfLease`	-	USD	Annual
Loss on lease termination/modification, net	`GainLossOnTerminationOfLease`	$-2.18M	USD	Annual
Amortization of gains from terminated interest rate swaps	`AmortizationOfDeferredHedgeGains`	$-10.19M	USD	Annual
Amortization of gains from terminated interest rate swaps	`AmortizationOfDeferredHedgeGains`	$-15.89M	USD	Annual
Amortization of gains from terminated interest rate swaps	`AmortizationOfDeferredHedgeGains`	$-31.23M	USD	Annual
ESOP expense	`EmployeeStockOwnershipPlanESOPCompensationExpense`	$9.92M	USD	Annual
ESOP expense	`EmployeeStockOwnershipPlanESOPCompensationExpense`	$9.41M	USD	Annual
ESOP expense	`EmployeeStockOwnershipPlanESOPCompensationExpense`	$2.35M	USD	Annual
Issuance of common shares donated to the Eastern Bank Foundation	`IssuanceOfCommonStockForCharitableDonations`	$91.29M	USD	Annual
Issuance of common shares donated to the Eastern Bank Foundation	`IssuanceOfCommonStockForCharitableDonations`	-	USD	Annual
Issuance of common shares donated to the Eastern Bank Foundation	`IssuanceOfCommonStockForCharitableDonations`	-	USD	Annual
Other	`OtherOperatingActivitiesCashFlowStatement`	$17.00K	USD	Annual
Other	`OtherOperatingActivitiesCashFlowStatement`	$-587.00K	USD	Annual
Other	`OtherOperatingActivitiesCashFlowStatement`	$-526.00K	USD	Annual
Trading securities	`IncreaseDecreaseInTradingSecurities`	-	USD	Annual
Trading securities	`IncreaseDecreaseInTradingSecurities`	$-961.00K	USD	Annual
Trading securities	`IncreaseDecreaseInTradingSecurities`	-	USD	Annual
Loans held for sale	`IncreaseDecreaseInLoansHeldForSale`	$3.35M	USD	Annual
Loans held for sale	`IncreaseDecreaseInLoansHeldForSale`	$47.00K	USD	Annual
Loans held for sale	`IncreaseDecreaseInLoansHeldForSale`	$1.13M	USD	Annual
Prepaid pension expense	`IncreaseDecreaseInPrepaidExpense`	$24.05M	USD	Annual
Prepaid pension expense	`IncreaseDecreaseInPrepaidExpense`	$-4.34M	USD	Annual
Prepaid pension expense	`IncreaseDecreaseInPrepaidExpense`	$-1.13M	USD	Annual
Other assets	`IncreaseDecreaseInOtherOperatingAssets`	$-823.00K	USD	Annual
Other assets	`IncreaseDecreaseInOtherOperatingAssets`	$89.59M	USD	Annual
Other assets	`IncreaseDecreaseInOtherOperatingAssets`	$-61.50M	USD	Annual
Other liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$-22.88M	USD	Annual
Other liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$48.98M	USD	Annual
Other liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$-49.93M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$69.85M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$174.49M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$229.94M	USD	Annual
Proceeds from sales of securities available for sale	`ProceedsFromSaleOfAvailableForSaleSecuritiesDebt`	$9.10M	USD	Annual
Proceeds from sales of securities available for sale	`ProceedsFromSaleOfAvailableForSaleSecuritiesDebt`	$431.19M	USD	Annual
Proceeds from sales of securities available for sale	`ProceedsFromSaleOfAvailableForSaleSecuritiesDebt`	$23.80M	USD	Annual
Proceeds from maturities and principal paydowns of securities available for sale	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	$939.58M	USD	Annual
Proceeds from maturities and principal paydowns of securities available for sale	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	$1.05B	USD	Annual
Proceeds from maturities and principal paydowns of securities available for sale	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	$452.39M	USD	Annual
Purchases of securities available for sale	`PaymentsToAcquireAvailableForSaleSecuritiesDebt`	$3.32B	USD	Annual
Purchases of securities available for sale	`PaymentsToAcquireAvailableForSaleSecuritiesDebt`	$2.11B	USD	Annual
Purchases of securities available for sale	`PaymentsToAcquireAvailableForSaleSecuritiesDebt`	$740.77M	USD	Annual
Proceeds from maturities and principal paydowns of securities held to maturity	`ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities`	-	USD	Annual
Proceeds from maturities and principal paydowns of securities held to maturity	`ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities`	-	USD	Annual
Proceeds from maturities and principal paydowns of securities held to maturity	`ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities`	$17.40M	USD	Annual
Purchases of securities held to maturity	`PaymentsToAcquireHeldToMaturitySecurities`	-	USD	Annual
Purchases of securities held to maturity	`PaymentsToAcquireHeldToMaturitySecurities`	$493.68M	USD	Annual
Purchases of securities held to maturity	`PaymentsToAcquireHeldToMaturitySecurities`	-	USD	Annual
Proceeds from sale of Federal Home Loan Bank stock	`ProceedsFromSaleOfFederalHomeLoanBankStock`	$749.00K	USD	Annual
Proceeds from sale of Federal Home Loan Bank stock	`ProceedsFromSaleOfFederalHomeLoanBankStock`	$63.72M	USD	Annual
Proceeds from sale of Federal Home Loan Bank stock	`ProceedsFromSaleOfFederalHomeLoanBankStock`	$6.69M	USD	Annual
Purchases of Federal Home Loan Bank stock	`PaymentsToAcquireFederalHomeLoanBankStock`	$94.17M	USD	Annual
Purchases of Federal Home Loan Bank stock	`PaymentsToAcquireFederalHomeLoanBankStock`	$527.00K	USD	Annual
Purchases of Federal Home Loan Bank stock	`PaymentsToAcquireFederalHomeLoanBankStock`	$2.10M	USD	Annual
Contributions to low income housing tax credit investments	`ContributionsToLowIncomeHousingTaxCreditInvestments`	$-19.49M	USD	Annual
Contributions to low income housing tax credit investments	`ContributionsToLowIncomeHousingTaxCreditInvestments`	$-12.37M	USD	Annual
Contributions to low income housing tax credit investments	`ContributionsToLowIncomeHousingTaxCreditInvestments`	$-11.38M	USD	Annual
Contributions to other equity investments	`PaymentsToAcquireOtherInvestments`	$4.39M	USD	Annual
Contributions to other equity investments	`PaymentsToAcquireOtherInvestments`	$2.52M	USD	Annual
Contributions to other equity investments	`PaymentsToAcquireOtherInvestments`	$788.00K	USD	Annual
Distributions from other equity investments	`ProceedsFromSaleOfOtherInvestments`	$337.00K	USD	Annual
Distributions from other equity investments	`ProceedsFromSaleOfOtherInvestments`	$1.17M	USD	Annual
Distributions from other equity investments	`ProceedsFromSaleOfOtherInvestments`	$201.00K	USD	Annual
Proceeds from life insurance policies	`ProceedsFromLifeInsurancePolicies`	$1.35M	USD	Annual
Proceeds from life insurance policies	`ProceedsFromLifeInsurancePolicies`	$20.45M	USD	Annual
Proceeds from life insurance policies	`ProceedsFromLifeInsurancePolicies`	-	USD	Annual
Net (increase) decrease in outstanding loans, excluding loan purchases	`ProceedsFromPaymentsForOutstandingLoans`	$926.25M	USD	Annual
Net (increase) decrease in outstanding loans, excluding loan purchases	`ProceedsFromPaymentsForOutstandingLoans`	$-380.81M	USD	Annual
Net (increase) decrease in outstanding loans, excluding loan purchases	`ProceedsFromPaymentsForOutstandingLoans`	$719.04M	USD	Annual
Purchases of loans	`PaymentsToAcquireFinanceReceivables`	$380.23M	USD	Annual
Purchases of loans	`PaymentsToAcquireFinanceReceivables`	-	USD	Annual
Purchases of loans	`PaymentsToAcquireFinanceReceivables`	-	USD	Annual
Acquisitions, net of cash and cash equivalents acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$13.40M	USD	Annual
Acquisitions, net of cash and cash equivalents acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$13.44M	USD	Annual
Acquisitions, net of cash and cash equivalents acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$1.36M	USD	Annual
Purchased banking premises and equipment, net	`PaymentsToAcquireOtherPropertyPlantAndEquipment`	$8.63M	USD	Annual
Purchased banking premises and equipment, net	`PaymentsToAcquireOtherPropertyPlantAndEquipment`	$5.73M	USD	Annual
Purchased banking premises and equipment, net	`PaymentsToAcquireOtherPropertyPlantAndEquipment`	$5.14M	USD	Annual
Proceeds from sale of bank premises and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	-	USD	Annual
Proceeds from sale of bank premises and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$21.98M	USD	Annual
Proceeds from sale of bank premises and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$17.31M	USD	Annual
Proceeds from sale of other real estate owned	`ProceedsFromSaleOfOtherRealEstate`	$646.00K	USD	Annual
Proceeds from sale of other real estate owned	`ProceedsFromSaleOfOtherRealEstate`	-	USD	Annual
Proceeds from sale of other real estate owned	`ProceedsFromSaleOfOtherRealEstate`	$125.00K	USD	Annual
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.08B	USD	Annual
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.99B	USD	Annual
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-2.39B	USD	Annual
Net (decrease) increase in demand, savings, interest checking, and money market investment deposit accounts	`IncreaseDecreaseInDemandDeposits`	$2.67B	USD	Annual
Net (decrease) increase in demand, savings, interest checking, and money market investment deposit accounts	`IncreaseDecreaseInDemandDeposits`	$1.16B	USD	Annual
Net (decrease) increase in demand, savings, interest checking, and money market investment deposit accounts	`IncreaseDecreaseInDemandDeposits`	$-1.75B	USD	Annual
Net increase (decrease) in time deposits	`IncreaseDecreaseInTimeDeposits`	$-70.28M	USD	Annual
Net increase (decrease) in time deposits	`IncreaseDecreaseInTimeDeposits`	$1.10B	USD	Annual
Net increase (decrease) in time deposits	`IncreaseDecreaseInTimeDeposits`	$-58.14M	USD	Annual
Net increase (decrease) in borrowed funds	`ProceedsFromRepaymentsOfBorrowedFunds`	$-207.35M	USD	Annual
Net increase (decrease) in borrowed funds	`ProceedsFromRepaymentsOfBorrowedFunds`	$706.55M	USD	Annual
Net increase (decrease) in borrowed funds	`ProceedsFromRepaymentsOfBorrowedFunds`	$2.58M	USD	Annual
Repayments of acquired subordinated debentures	`RepaymentsOfSubordinatedDebt`	-	USD	Annual
Repayments of acquired subordinated debentures	`RepaymentsOfSubordinatedDebt`	$36.28M	USD	Annual
Repayments of acquired subordinated debentures	`RepaymentsOfSubordinatedDebt`	-	USD	Annual
Contingent consideration paid	`PaymentForContingentConsiderationLiabilityFinancingActivities`	$165.00K	USD	Annual
Contingent consideration paid	`PaymentForContingentConsiderationLiabilityFinancingActivities`	$263.00K	USD	Annual
Contingent consideration paid	`PaymentForContingentConsiderationLiabilityFinancingActivities`	$668.00K	USD	Annual
Proceeds from issuance of common shares	`ProceedsFromIssuanceOfCommonStock`	$1.79B	USD	Annual
Proceeds from issuance of common shares	`ProceedsFromIssuanceOfCommonStock`	-	USD	Annual
Proceeds from issuance of common shares	`ProceedsFromIssuanceOfCommonStock`	-	USD	Annual
Purchase of shares by the ESOP	`PaymentsForRepurchaseOfEmployeeStockOwnershipPlan`	$149.41M	USD	Annual
Purchase of shares by the ESOP	`PaymentsForRepurchaseOfEmployeeStockOwnershipPlan`	-	USD	Annual
Purchase of shares by the ESOP	`PaymentsForRepurchaseOfEmployeeStockOwnershipPlan`	-	USD	Annual
Payment of deferred offering costs	`PaymentsOfStockIssuanceCosts`	-	USD	Annual
Payment of deferred offering costs	`PaymentsOfStockIssuanceCosts`	$28.55M	USD	Annual
Payment of deferred offering costs	`PaymentsOfStockIssuanceCosts`	-	USD	Annual
Payments for repurchases of common stock	`PaymentsForRepurchaseOfCommonStock`	$201.62M	USD	Annual
Payments for repurchases of common stock	`PaymentsForRepurchaseOfCommonStock`	-	USD	Annual
Payments for repurchases of common stock	`PaymentsForRepurchaseOfCommonStock`	$23.22M	USD	Annual
Dividends declared and paid to common shareholders	`PaymentsOfDividends`	-	USD	Annual
Dividends declared and paid to common shareholders	`PaymentsOfDividends`	$65.89M	USD	Annual
Dividends declared and paid to common shareholders	`PaymentsOfDividends`	$16.30M	USD	1 Quarter
Dividends declared and paid to common shareholders	`PaymentsOfDividends`	$13.70M	USD	1 Quarter
Dividends declared and paid to common shareholders	`PaymentsOfDividends`	$51.56M	USD	Annual
Dividends declared and paid to common shareholders	`PaymentsOfDividends`	$16.10M	USD	1 Quarter
Dividends declared and paid to common shareholders	`PaymentsOfDividends`	$16.90M	USD	1 Quarter
Dividends declared and paid to common shareholders	`PaymentsOfDividends`	$13.80M	USD	1 Quarter
Dividends declared and paid to common shareholders	`PaymentsOfDividends`	$13.80M	USD	1 Quarter
Dividends declared and paid to common shareholders	`PaymentsOfDividends`	$10.30M	USD	1 Quarter
Dividends declared and paid to common shareholders	`PaymentsOfDividends`	$16.50M	USD	1 Quarter
Net cash (used in) provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-215.57M	USD	Annual
Net cash (used in) provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$988.98M	USD	Annual
Net cash (used in) provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$4.01B	USD	Annual
Net (decrease) increase in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$1.69B	USD	Annual
Net (decrease) increase in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-822.28M	USD	Annual
Net (decrease) increase in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-1.06B	USD	Annual
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.23B	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$362.60M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$2.05B	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$169.50M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.23B	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$362.60M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$2.05B	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$169.50M	USD	Point-in-time
Interest paid	`InterestPaidNet`	$13.68M	USD	Annual
Interest paid	`InterestPaidNet`	$35.24M	USD	Annual
Interest paid	`InterestPaidNet`	$5.35M	USD	Annual
Income taxes	`IncomeTaxesPaid`	$41.75M	USD	Annual
Income taxes	`IncomeTaxesPaid`	$43.30M	USD	Annual
Income taxes	`IncomeTaxesPaid`	$35.13M	USD	Annual
Net increase in capital commitments relating to low income housing tax credit projects	`NetIncreaseInCapitalCommitmentsRelatingToLowIncomeHousingTaxCreditProjects`	$55.23M	USD	Annual
Net increase in capital commitments relating to low income housing tax credit projects	`NetIncreaseInCapitalCommitmentsRelatingToLowIncomeHousingTaxCreditProjects`	$25.82M	USD	Annual
Net increase in capital commitments relating to low income housing tax credit projects	`NetIncreaseInCapitalCommitmentsRelatingToLowIncomeHousingTaxCreditProjects`	$28.29M	USD	Annual
Net decrease in operating lease right-of-use assets and operating lease liabilities relating to lease remeasurements (see Note 8, Leases within the Notes to the Consolidated Financial Statements)	`NetDecreaseInOperatingLeaseRightOfUseAssetsAndOperatingLeaseLiabilitiesRelatingToLeaseRemeasurements`	$14.84M	USD	Annual
Net decrease in operating lease right-of-use assets and operating lease liabilities relating to lease remeasurements (see Note 8, Leases within the Notes to the Consolidated Financial Statements)	`NetDecreaseInOperatingLeaseRightOfUseAssetsAndOperatingLeaseLiabilitiesRelatingToLeaseRemeasurements`	-	USD	Annual
Net decrease in operating lease right-of-use assets and operating lease liabilities relating to lease remeasurements (see Note 8, Leases within the Notes to the Consolidated Financial Statements)	`NetDecreaseInOperatingLeaseRightOfUseAssetsAndOperatingLeaseLiabilitiesRelatingToLeaseRemeasurements`	-	USD	Annual
Maturity of acquired securities sold under agreements to repurchase	`MaturityOfAcquiredSecuritiesSoldUnderAgreementsToRepurchaseNoncash`	-	USD	Annual
Maturity of acquired securities sold under agreements to repurchase	`MaturityOfAcquiredSecuritiesSoldUnderAgreementsToRepurchaseNoncash`	-	USD	Annual
Maturity of acquired securities sold under agreements to repurchase	`MaturityOfAcquiredSecuritiesSoldUnderAgreementsToRepurchaseNoncash`	$274.98M	USD	Annual
Initial recognition of operating lease right-of-use assets upon adoption of ASU 2016-02	`InitialRecognitionOfOperatingLeaseRightofuseAssetsUponAdoptionOfAccountingStandardsUpdate`	$92.95M	USD	Annual
Initial recognition of operating lease right-of-use assets upon adoption of ASU 2016-02	`InitialRecognitionOfOperatingLeaseRightofuseAssetsUponAdoptionOfAccountingStandardsUpdate`	-	USD	Annual
Initial recognition of operating lease right-of-use assets upon adoption of ASU 2016-02	`InitialRecognitionOfOperatingLeaseRightofuseAssetsUponAdoptionOfAccountingStandardsUpdate`	-	USD	Annual
Initial recognition of operating lease liabilities upon adoption of ASU 2016-02	`InitialRecognitionOfOperatingLeaseLiabilitiesUponAdoptionOfAccountingStandardsUpdate`	-	USD	Annual
Initial recognition of operating lease liabilities upon adoption of ASU 2016-02	`InitialRecognitionOfOperatingLeaseLiabilitiesUponAdoptionOfAccountingStandardsUpdate`	-	USD	Annual
Initial recognition of operating lease liabilities upon adoption of ASU 2016-02	`InitialRecognitionOfOperatingLeaseLiabilitiesUponAdoptionOfAccountingStandardsUpdate`	$96.43M	USD	Annual

Stockholders Equity 43 line items

Line Item	Tag	Value	Unit	Period
Issuance costs	`AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts`	$28.90M	USD	Annual
Purchase of common shares by the ESOP (14,940,652 shares) (in shares)	`StockPurchasedDuringPeriodSharesEmployeeStockOwnershipPlanESOP`	14.94M	shares	Annual
Shareholders equity	`StockholdersEquity`	$2.47B	USD	Point-in-time
Shareholders equity	`StockholdersEquity`	$1.60B	USD	Point-in-time
Shareholders equity	`StockholdersEquity`	$3.43B	USD	Point-in-time
Shareholders equity	`StockholdersEquity`	$3.41B	USD	Point-in-time
Deferred income tax expense (benefit)	`DeferredIncomeTaxExpenseBenefit`	$-20.36M	USD	Annual
Deferred income tax expense (benefit)	`DeferredIncomeTaxExpenseBenefit`	$-5.31M	USD	Annual
Beginning balance (in shares)	`CommonStockSharesOutstanding`	176.17M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	186.31M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	186.76M	shares	Point-in-time
Deferred income tax expense (benefit)	`DeferredIncomeTaxExpenseBenefit`	$6.02M	USD	Annual
Beginning balance	`StockholdersEquity`	$2.47B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$1.60B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$3.43B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$3.41B	USD	Point-in-time
Dividends to common shareholders	`DividendsCommonStockCash`	$51.62M	USD	Annual
Dividends to common shareholders	`DividendsCommonStockCash`	$66.54M	USD	Annual
Repurchased common stock	`StockRepurchasedDuringPeriodValue`	$201.62M	USD	Annual
Repurchased common stock	`StockRepurchasedDuringPeriodValue`	$23.22M	USD	Annual
Issuance of restricted stock awards	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	-	USD	Annual
Issuance of restricted stock awards	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	-	USD	Annual
Unvested restricted stock awards forfeited and subsequently cancelled	`StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures`	-	USD	Annual
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$10.51M	USD	Annual
Net income	`NetIncomeLoss`	$199.76M	USD	Annual
Net income	`NetIncomeLoss`	$22.74M	USD	Annual
Net income	`NetIncomeLoss`	$154.66M	USD	Annual
Other comprehensive income, net of tax	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$98.08M	USD	Annual
Other comprehensive income, net of tax	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-110.93M	USD	Annual
Other comprehensive income, net of tax	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-866.50M	USD	Annual
Proceeds of stock offering and issuance of common shares (net of costs of $28.9 million)	`StockIssuedDuringPeriodValueNewIssues`	$1.76B	USD	Annual
Issuance of common shares donated to the Eastern Bank Foundation	`StockIssuedDuringPeriodValueCharitableDonations`	$91.29M	USD	Annual
Purchase of common shares by the ESOP (14,940,652 shares)	`StockPurchasedDuringPeriodValueEmployeeStockOwnershipPlanESOP`	$149.41M	USD	Annual
ESOP shares committed to be released	`EmployeeStockOwnershipPlanESOPValueCommittedToBeReleasedShares`	$9.41M	USD	Annual
ESOP shares committed to be released	`EmployeeStockOwnershipPlanESOPValueCommittedToBeReleasedShares`	$9.92M	USD	Annual
ESOP shares committed to be released	`EmployeeStockOwnershipPlanESOPValueCommittedToBeReleasedShares`	$2.35M	USD	Annual
Ending balance (in shares)	`CommonStockSharesOutstanding`	176.17M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	186.31M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	186.76M	shares	Point-in-time
Ending balance	`StockholdersEquity`	$2.47B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$1.60B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$3.43B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$3.41B	USD	Point-in-time

Comprehensive Income 18 line items

Line Item	Tag	Value	Unit	Period
Net income	`NetIncomeLoss`	$199.76M	USD	Annual
Net income	`NetIncomeLoss`	$22.74M	USD	Annual
Net income	`NetIncomeLoss`	$154.66M	USD	Annual
Net change in fair value of securities available for sale	`OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent`	$-104.26M	USD	Annual
Net change in fair value of securities available for sale	`OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent`	$-821.57M	USD	Annual
Net change in fair value of securities available for sale	`OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent`	$23.87M	USD	Annual
Net change in fair value of cash flow hedges	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$-57.52M	USD	Annual
Net change in fair value of cash flow hedges	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$14.19M	USD	Annual
Net change in fair value of cash flow hedges	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$-22.45M	USD	Annual
Net change in other comprehensive income for defined benefit postretirement plans	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$-60.02M	USD	Annual
Net change in other comprehensive income for defined benefit postretirement plans	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$-12.59M	USD	Annual
Net change in other comprehensive income for defined benefit postretirement plans	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$-15.78M	USD	Annual
Total other comprehensive (loss) income	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$98.08M	USD	Annual
Total other comprehensive (loss) income	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-110.93M	USD	Annual
Total other comprehensive (loss) income	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-866.50M	USD	Annual
Total comprehensive (loss) income	`ComprehensiveIncomeNetOfTax`	$120.82M	USD	Annual
Total comprehensive (loss) income	`ComprehensiveIncomeNetOfTax`	$43.73M	USD	Annual
Total comprehensive (loss) income	`ComprehensiveIncomeNetOfTax`	$-666.74M	USD	Annual

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.