Federal Home Loan Bank of Indianapolis

$ Overview Financials Valuation SEC Filings Company Website

2024 Q2 Form 10-Q Financial Statement

#000133175424000160 Filed on August 08, 2024

Income Statement

Concept	2024 Q2

Balance Sheet

Concept	2024 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$56.25M
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
YoY Change
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$79.25B
YoY Change	6.7%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities
YoY Change
LONG-TERM LIABILITIES
Long-Term Debt
YoY Change
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities
YoY Change
TOTAL LIABILITIES
Total Short-Term Liabilities
Total Long-Term Liabilities
Total Liabilities	$75.26B
YoY Change	6.77%
SHAREHOLDERS EQUITY
Retained Earnings	$1.624B
YoY Change	14.91%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$3.986B
YoY Change
Total Liabilities & Shareholders Equity	$79.25B
YoY Change	6.7%

Cashflow Statement

Concept	2024 Q2

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	us-gaap	Heldtomaturity Securities Sold Security Realized Gain Loss Excluding Other Than Temporary Impairments HeldtomaturitySecuritiesSoldSecurityRealizedGainLossExcludingOtherThanTemporaryImpairments	-71000	usd
CY2024Q2	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	0	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Call Date In Next Rolling Twelve Months FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextCallDateInNextRollingTwelveMonths	16133662000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Call Date In Next Rolling Twelve Months FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextCallDateInNextRollingTwelveMonths	14901928000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Put Or Convert Date In Next Rolling Twelve Months FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextPutOrConvertDateInNextRollingTwelveMonths	14999940000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Put Or Convert Date In Next Rolling Twelve Months FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextPutOrConvertDateInNextRollingTwelveMonths	13910616000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Call Date In Rolling Year Two FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextCallDateInRollingYearTwo	2912456000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Call Date In Rolling Year Two FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextCallDateInRollingYearTwo	3641289000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Put Or Convert Date In Rolling Year Two FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextPutOrConvertDateInRollingYearTwo	4666606000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Put Or Convert Date In Rolling Year Two FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextPutOrConvertDateInRollingYearTwo	5102289000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Call Date In Rolling Year Three FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextCallDateInRollingYearThree	2417973000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Call Date In Rolling Year Three FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextCallDateInRollingYearThree	2370466000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Put Or Convert Date In Rolling Year Three FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextPutOrConvertDateInRollingYearThree	3096033000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Put Or Convert Date In Rolling Year Three FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextPutOrConvertDateInRollingYearThree	3581356000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Call Date In Rolling Year Four FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextCallDateInRollingYearFour	5377082000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Call Date In Rolling Year Four FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextCallDateInRollingYearFour	3328746000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Put Or Convert Date In Rolling Year Four FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextPutOrConvertDateInRollingYearFour	7169382000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Put Or Convert Date In Rolling Year Four FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextPutOrConvertDateInRollingYearFour	4808556000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Call Date In Rolling Year Five FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextCallDateInRollingYearFive	3911056000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Call Date In Rolling Year Five FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextCallDateInRollingYearFive	4502482000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Put Or Convert Date In Rolling Year Five FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextPutOrConvertDateInRollingYearFive	3492859000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Put Or Convert Date In Rolling Year Five FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextPutOrConvertDateInRollingYearFive	4661135000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Call Date After Rolling Year Five FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextCallDateAfterRollingYearFive	6297030000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Call Date After Rolling Year Five FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextCallDateAfterRollingYearFive	7132155000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Put Or Convert Date After Rolling Year Five FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextPutOrConvertDateAfterRollingYearFive	3624439000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Earlier Of Contractual Maturity Or Next Put Or Convert Date After Rolling Year Five FederalHomeLoanBankAdvancesEarlierOfContractualMaturityOrNextPutOrConvertDateAfterRollingYearFive	3813114000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Par Value FederalHomeLoanBankAdvancesParValue	37049259000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Par Value FederalHomeLoanBankAdvancesParValue	35877068000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Par Value FederalHomeLoanBankAdvancesParValue	37049259000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Par Value FederalHomeLoanBankAdvancesParValue	35877068000	usd
CY2023Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	63585000	usd
CY2024Q2	us-gaap	Interest Expense InterestExpense	909049000	usd
CY2023Q2	us-gaap	Interest Expense InterestExpense	826549000	usd
	us-gaap	Interest Expense InterestExpense	1795626000	usd
	us-gaap	Interest Expense InterestExpense	1541795000	usd
CY2024Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1033943000	usd
CY2023Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	950142000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	2049919000	usd
CY2024Q2	us-gaap	Interest Expense Other Short Term Borrowings InterestExpenseOtherShortTermBorrowings	248701000	usd
CY2023Q2	us-gaap	Interest Expense Other Short Term Borrowings InterestExpenseOtherShortTermBorrowings	269398000	usd
	us-gaap	Interest Expense Capital Securities InterestExpenseCapitalSecurities	8480000	usd
	us-gaap	Interest Expense InterestExpense	1795626000	usd
	us-gaap	Interest Expense InterestExpense	1541795000	usd
CY2023Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	123593000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	254293000	usd
CY2024Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-21000	usd
CY2023Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-3000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-46000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-2000	usd
CY2024Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	124915000	usd
CY2023Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	123596000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	227244000	usd
CY2024Q2	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	1840000	usd
CY2023Q2	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-142000	usd
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	1840000	usd
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-213000	usd
CY2024Q2	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	3203000	usd
CY2023Q2	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	758000	usd
	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	-1368000	usd
	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	9072000	usd
CY2024Q2	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-644000	usd
CY2023Q2	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	4970000	usd
	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	8480000	usd
CY2024Q2	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2023Q2	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	19846000	usd
CY2024Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	2334000	usd
CY2023Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	3565000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	7139000	usd
CY2024Q2	us-gaap	Noninterest Income NoninterestIncome	6733000	usd
CY2023Q2	us-gaap	Noninterest Income NoninterestIncome	9151000	usd
	us-gaap	Noninterest Income NoninterestIncome	16091000	usd
	us-gaap	Noninterest Income NoninterestIncome	39298000	usd
CY2024Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	15250000	usd
CY2023Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	14878000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	31790000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	31713000	usd
CY2024Q2	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	9010000	usd
CY2023Q2	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	8630000	usd
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	17295000	usd
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	16030000	usd
CY2024Q2	us-gaap	Regulator Expenses Cost Assessed On Federal Home Loan Bank RegulatorExpensesCostAssessedOnFederalHomeLoanBank	1396000	usd
CY2023Q2	us-gaap	Regulator Expenses Cost Assessed On Federal Home Loan Bank RegulatorExpensesCostAssessedOnFederalHomeLoanBank	1711000	usd
	us-gaap	Regulator Expenses Cost Assessed On Federal Home Loan Bank RegulatorExpensesCostAssessedOnFederalHomeLoanBank	2792000	usd
	us-gaap	Regulator Expenses Cost Assessed On Federal Home Loan Bank RegulatorExpensesCostAssessedOnFederalHomeLoanBank	3423000	usd
CY2024Q2	us-gaap	Office Of Finance Assessments Cost Assessed On Federal Home Loan Bank OfficeOfFinanceAssessmentsCostAssessedOnFederalHomeLoanBank	1232000	usd
CY2023Q2	us-gaap	Office Of Finance Assessments Cost Assessed On Federal Home Loan Bank OfficeOfFinanceAssessmentsCostAssessedOnFederalHomeLoanBank	1007000	usd
	us-gaap	Office Of Finance Assessments Cost Assessed On Federal Home Loan Bank OfficeOfFinanceAssessmentsCostAssessedOnFederalHomeLoanBank	2756000	usd
	us-gaap	Office Of Finance Assessments Cost Assessed On Federal Home Loan Bank OfficeOfFinanceAssessmentsCostAssessedOnFederalHomeLoanBank	2080000	usd
CY2024Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	5385000	usd
CY2023Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	4522000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	10414000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	8973000	usd
CY2024Q2	us-gaap	Noninterest Expense NoninterestExpense	32273000	usd
CY2023Q2	us-gaap	Noninterest Expense NoninterestExpense	30748000	usd
	us-gaap	Noninterest Expense NoninterestExpense	65047000	usd
	us-gaap	Noninterest Expense NoninterestExpense	62219000	usd
CY2024Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	99375000	usd
CY2023Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	101999000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	205383000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	204323000	usd
CY2024Q2	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	10488000	usd
CY2023Q2	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	10637000	usd
	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	21623000	usd
	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	21280000	usd
CY2024Q2	us-gaap	Net Income Loss Attributable To Parent Net Of Federal Home Loan Bank Assessments NetIncomeLossAttributableToParentNetOfFederalHomeLoanBankAssessments	88887000	usd
CY2023Q2	us-gaap	Net Income Loss Attributable To Parent Net Of Federal Home Loan Bank Assessments NetIncomeLossAttributableToParentNetOfFederalHomeLoanBankAssessments	91362000	usd
	us-gaap	Net Income Loss Attributable To Parent Net Of Federal Home Loan Bank Assessments NetIncomeLossAttributableToParentNetOfFederalHomeLoanBankAssessments	183760000	usd
	us-gaap	Net Income Loss Attributable To Parent Net Of Federal Home Loan Bank Assessments NetIncomeLossAttributableToParentNetOfFederalHomeLoanBankAssessments	183043000	usd
CY2024Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-8914000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	61911000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	92402000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	13934000	usd
CY2024Q2	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	2433000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-1206000	usd
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-1546000	usd
CY2024Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-11347000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	63117000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	90213000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	15480000	usd
CY2024Q2	us-gaap	Comprehensive Income Loss Net Of Federal Home Loan Bank Assessments Attributable To Parent ComprehensiveIncomeLossNetOfFederalHomeLoanBankAssessmentsAttributableToParent	77540000	usd
CY2023Q2	us-gaap	Comprehensive Income Loss Net Of Federal Home Loan Bank Assessments Attributable To Parent ComprehensiveIncomeLossNetOfFederalHomeLoanBankAssessmentsAttributableToParent	154479000	usd
	us-gaap	Comprehensive Income Loss Net Of Federal Home Loan Bank Assessments Attributable To Parent ComprehensiveIncomeLossNetOfFederalHomeLoanBankAssessmentsAttributableToParent	273973000	usd
CY2024Q1	us-gaap	Stockholders Equity StockholdersEquity	3967585000	usd
CY2024Q2	us-gaap	Comprehensive Income Loss Net Of Federal Home Loan Bank Assessments Attributable To Parent ComprehensiveIncomeLossNetOfFederalHomeLoanBankAssessmentsAttributableToParent	77540000	usd
CY2024Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	69847000	usd
CY2024Q2	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	81042000	usd
CY2024Q2	fhlbi	Annualized Dividend Rate On Capital Stock AnnualizedDividendRateOnCapitalStock	0.0823
CY2024Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	47460000	usd
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	3986470000	usd
CY2023Q1	us-gaap	Stockholders Equity StockholdersEquity	3570843000	usd
CY2023Q2	us-gaap	Comprehensive Income Loss Net Of Federal Home Loan Bank Assessments Attributable To Parent ComprehensiveIncomeLossNetOfFederalHomeLoanBankAssessmentsAttributableToParent	154479000	usd
CY2023Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	88609000	usd
CY2023Q2	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	311000	usd
	us-gaap	Comprehensive Income Loss Net Of Federal Home Loan Bank Assessments Attributable To Parent ComprehensiveIncomeLossNetOfFederalHomeLoanBankAssessmentsAttributableToParent	273973000	usd
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	141297000	usd
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	81042000	usd
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	91655000	usd
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	3986470000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	3383698000	usd
	us-gaap	Comprehensive Income Loss Net Of Federal Home Loan Bank Assessments Attributable To Parent ComprehensiveIncomeLossNetOfFederalHomeLoanBankAssessmentsAttributableToParent	198523000	usd
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	257689000	usd
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	311000	usd
	us-gaap	Net Shares Reclassified To Mandatorily Redeemable Capital Stock Value NetSharesReclassifiedToMandatorilyRedeemableCapitalStockValue	13000	usd
	fhlbi	Annualized Dividend Rate On Capital Stock AnnualizedDividendRateOnCapitalStock	0.0498
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	55934000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	3783652000	usd
	us-gaap	Net Income Loss Attributable To Parent Net Of Federal Home Loan Bank Assessments NetIncomeLossAttributableToParentNetOfFederalHomeLoanBankAssessments	183760000	usd
	us-gaap	Net Income Loss Attributable To Parent Net Of Federal Home Loan Bank Assessments NetIncomeLossAttributableToParentNetOfFederalHomeLoanBankAssessments	183043000	usd
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	10161000	usd
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	-2909000	usd
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-275021000	usd
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	15458000	usd
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	19846000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-46000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-2000	usd
	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	-1368000	usd
	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	9072000	usd
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	1840000	usd
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-213000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	8131000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	3733000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	4395000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1055000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	30282000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	120610000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	67087000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	19243000	usd
	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	369507000	usd
	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	87991000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	553267000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	271034000	usd
	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	99398000	usd
	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	134803000	usd
	us-gaap	Proceeds From Payments For Securities Purchased Under Agreements To Resell ProceedsFromPaymentsForSecuritiesPurchasedUnderAgreementsToResell	250000000	usd
	us-gaap	Proceeds From Payments For Securities Purchased Under Agreements To Resell ProceedsFromPaymentsForSecuritiesPurchasedUnderAgreementsToResell	150000000	usd
	us-gaap	Increase Decrease In Federal Funds Sold IncreaseDecreaseInFederalFundsSold	-396000000	usd
	us-gaap	Increase Decrease In Federal Funds Sold IncreaseDecreaseInFederalFundsSold	-1879000000	usd
	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	250000000	usd
	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	1400000000	usd
	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	0	usd
	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	494063000	usd
	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	727928000	usd
	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	0	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	0	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	161480000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	220763000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	85113000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	423534000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1638271000	usd
	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	9691000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	245119000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	238896000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	384414000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	922252000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	109278659000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	175082844000	usd
	us-gaap	Payments For Federal Home Loan Bank Advances PaymentsForFederalHomeLoanBankAdvances	110450849000	usd
	us-gaap	Payments For Federal Home Loan Bank Advances PaymentsForFederalHomeLoanBankAdvances	174713799000	usd
	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	402708000	usd
	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	331922000	usd
	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	1186840000	usd
	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	546639000	usd
	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	4438000	usd
	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	1855000	usd
	fhlbi	Principal Repayments From Loans To Other Federal Home Loan Banks PrincipalRepaymentsFromLoansToOtherFederalHomeLoanBanks	47000000	usd
	fhlbi	Principal Repayments From Loans To Other Federal Home Loan Banks PrincipalRepaymentsFromLoansToOtherFederalHomeLoanBanks	810000000	usd
	fhlbi	Disbursements From Loans To Other Federal Home Loan Banks DisbursementsFromLoansToOtherFederalHomeLoanBanks	47000000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1862926000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	219126000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	73370000	usd
	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	9691000	usd
	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	0	usd
	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	-5136000	usd
	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	-4340000	usd
	us-gaap	Proceeds From Other Short Term Debt ProceedsFromOtherShortTermDebt	401334906000	usd
	us-gaap	Proceeds From Other Short Term Debt ProceedsFromOtherShortTermDebt	339309328000	usd
	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	17523224000	usd
	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	16099923000	usd
	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	401506244000	usd
	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	346475227000	usd
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	15277025000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	0	usd
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	500000000	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	0	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	500000000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	141297000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	257689000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	81042000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	311000	usd
	us-gaap	Repayments Of Mandatory Redeemable Capital Securities RepaymentsOfMandatoryRedeemableCapitalSecurities	5923000	usd
	us-gaap	Repayments Of Mandatory Redeemable Capital Securities RepaymentsOfMandatoryRedeemableCapitalSecurities	1894000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	91655000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2271491000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1634316000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-2598000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	42424000	usd
CY2024Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	56246000	usd
	us-gaap	Interest Paid Net InterestPaidNet	1793592000	usd
	us-gaap	Interest Paid Net InterestPaidNet	1380115000	usd
	us-gaap	Payments For Affordable Housing Programs PaymentsForAffordableHousingPrograms	19577000	usd
	us-gaap	Payments For Affordable Housing Programs PaymentsForAffordableHousingPrograms	6315000	usd
	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	0	usd
	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	-5136000	usd
	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	-4340000	usd
	us-gaap	Proceeds From Other Short Term Debt ProceedsFromOtherShortTermDebt	401334906000	usd
	us-gaap	Proceeds From Other Short Term Debt ProceedsFromOtherShortTermDebt	339309328000	usd
	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	17523224000	usd
	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	16099923000	usd
	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	401506244000	usd
	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	346475227000	usd
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	15277025000	usd
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	7576968000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	0	usd
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	500000000	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	0	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	500000000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	141297000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	257689000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	81042000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	311000	usd
	us-gaap	Repayments Of Mandatory Redeemable Capital Securities RepaymentsOfMandatoryRedeemableCapitalSecurities	5923000	usd
	us-gaap	Repayments Of Mandatory Redeemable Capital Securities RepaymentsOfMandatoryRedeemableCapitalSecurities	1894000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	91655000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	55934000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2271491000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1634316000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-2598000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	42424000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	58844000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	21161000	usd
CY2024Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	56246000	usd
	us-gaap	Interest Paid Net InterestPaidNet	1793592000	usd
	us-gaap	Interest Paid Net InterestPaidNet	1380115000	usd
	us-gaap	Payments For Affordable Housing Programs PaymentsForAffordableHousingPrograms	19577000	usd
	us-gaap	Payments For Affordable Housing Programs PaymentsForAffordableHousingPrograms	6315000	usd
	us-gaap	Use Of Estimates UseOfEstimates	<span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates.</span> When preparing financial statements in accordance with GAAP, we are required to make subjective assumptions and estimates that may affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities, and the reported amounts of income and expense. Although the reported amounts and disclosures reflect our best estimates, actual results could differ significantly from these estimates. The most significant estimates pertain to the fair values of financial instruments, specifically our derivatives and associated hedged items.
CY2024Q2	fhlbi	Percentage Of Short Term Investments With Counterparties Rated By An Nrsro As Investment Grade PercentageOfShortTermInvestmentsWithCounterpartiesRatedByAnNRSROAsInvestmentGrade	0.97
CY2023Q4	fhlbi	Percentage Of Short Term Investments With Counterparties Rated By An Nrsro As Investment Grade PercentageOfShortTermInvestmentsWithCounterpartiesRatedByAnNRSROAsInvestmentGrade	0.97
CY2024Q2	us-gaap	Trading Securities TradingSecurities	1076622000	usd
CY2023Q4	us-gaap	Trading Securities TradingSecurities	600063000	usd
CY2024Q2	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	3203000	usd
CY2023Q2	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	615000	usd
	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	-1837000	usd
	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	2396000	usd
CY2024Q2	us-gaap	Debt Securities Trading Realized Gain Loss DebtSecuritiesTradingRealizedGainLoss	0	usd
CY2023Q2	us-gaap	Debt Securities Trading Realized Gain Loss DebtSecuritiesTradingRealizedGainLoss	143000	usd
	us-gaap	Debt Securities Trading Realized Gain Loss DebtSecuritiesTradingRealizedGainLoss	469000	usd
	us-gaap	Debt Securities Trading Realized Gain Loss DebtSecuritiesTradingRealizedGainLoss	6676000	usd
CY2024Q2	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	3203000	usd
CY2023Q2	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	758000	usd
	us-gaap	Debt Securities Trading Gain Loss DebtSecuritiesTradingGainLoss	9072000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	14229121000	usd
CY2024Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	56205000	usd
CY2024Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	23580000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	14261746000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	14254103000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	82714000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	14194326000	usd
CY2024Q2	fhlbi	Debt Securities Available For Sale Net Unamortized Premium Discount DebtSecuritiesAvailableForSaleNetUnamortizedPremiumDiscount	-256288000	usd
CY2023Q4	fhlbi	Debt Securities Available For Sale Net Unamortized Premium Discount DebtSecuritiesAvailableForSaleNetUnamortizedPremiumDiscount	-278669000	usd
CY2024Q2	fhlbi	Debt Securities Available For Sale Fair Value Hedging Basis Adjustment DebtSecuritiesAvailableForSaleFairValueHedgingBasisAdjustment	-1019037000	usd
CY2023Q4	fhlbi	Debt Securities Available For Sale Fair Value Hedging Basis Adjustment DebtSecuritiesAvailableForSaleFairValueHedgingBasisAdjustment	-778882000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluded Accrued Interest From Amortized Cost DebtSecuritiesAvailableForSaleExcludedAccruedInterestFromAmortizedCost	true
CY2024Q2	us-gaap	Debt Securities Available For Sale Excluded Accrued Interest From Amortized Cost DebtSecuritiesAvailableForSaleExcludedAccruedInterestFromAmortizedCost	true
CY2024Q2	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	73172000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	72005000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1645775000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1364000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	2552568000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	22216000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	6949053000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	26686000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	3222644000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	56028000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	10171697000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	82714000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	14261746000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	14254103000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	14194326000	usd
CY2024Q2	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	220763000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	1840000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-142000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2024Q2	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	5393623000	usd
CY2024Q2	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	7948000	usd
CY2024Q2	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	65236000	usd
CY2024Q2	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	5336335000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	5256803000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	3290000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	80694000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	5179399000	usd
CY2024Q2	fhlbi	Debt Securities Held To Maturity Unamortized Premium Net DebtSecuritiesHeldToMaturityUnamortizedPremiumNet	19975000	usd
CY2023Q4	fhlbi	Debt Securities Held To Maturity Unamortized Premium Net DebtSecuritiesHeldToMaturityUnamortizedPremiumNet	21942000	usd
	us-gaap	Heldtomaturity Securities Sold Security Realized Gain Loss Excluding Other Than Temporary Impairments HeldtomaturitySecuritiesSoldSecurityRealizedGainLossExcludingOtherThanTemporaryImpairments	0	usd
	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	0	usd
CY2023Q2	fhlbi	Held To Maturity Principal Outstanding Minimum Percentage Collected Prior To Sale HeldToMaturityPrincipalOutstandingMinimumPercentageCollectedPriorToSale	0.85
	fhlbi	Held To Maturity Principal Outstanding Minimum Percentage Collected Prior To Sale HeldToMaturityPrincipalOutstandingMinimumPercentageCollectedPriorToSale	0.85
CY2024Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2024Q2	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	0	usd
CY2024Q2	us-gaap	Weighted Average Interest Rate On Overdrawn Demand Deposit WeightedAverageInterestRateOnOverdrawnDemandDeposit	0
CY2023Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	2000	usd
CY2023Q4	us-gaap	Weighted Average Interest Rate On Overdrawn Demand Deposit WeightedAverageInterestRateOnOverdrawnDemandDeposit	0.0776
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Next Rolling Twelve Months FederalHomeLoanBankAdvancesMaturitiesSummaryInNextRollingTwelveMonths	11132790000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Next Twelve Rolling Months FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInNextTwelveRollingMonths	0.0469
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Next Rolling Twelve Months FederalHomeLoanBankAdvancesMaturitiesSummaryInNextRollingTwelveMonths	9780116000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Next Twelve Rolling Months FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInNextTwelveRollingMonths	0.0488
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Two FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearTwo	3664606000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Two FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearTwo	0.0362
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Two FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearTwo	4362389000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Two FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearTwo	0.0333
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Three FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearThree	2763033000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Three FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearThree	0.0355
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Three FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearThree	2683356000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Three FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearThree	0.0325
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Four FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearFour	7086282000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Four FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearFour	0.0438
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Four FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearFour	4573456000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Four FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearFour	0.0437
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Five FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearFive	4234109000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Five FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearFive	0.0431
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Five FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearFive	5531135000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Five FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearFive	0.0430
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Maturities Summary After Rolling Year Five FederalHomeLoanBankAdvancesMaturitiesSummaryAfterRollingYearFive	8168439000	usd
CY2024Q2	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	220763000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	1840000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-142000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2024Q2	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	5393623000	usd
CY2024Q2	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	7948000	usd
CY2024Q2	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	65236000	usd
CY2024Q2	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	5336335000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	5256803000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	3290000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	80694000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	5179399000	usd
CY2024Q2	fhlbi	Debt Securities Held To Maturity Unamortized Premium Net DebtSecuritiesHeldToMaturityUnamortizedPremiumNet	19975000	usd
CY2023Q4	fhlbi	Debt Securities Held To Maturity Unamortized Premium Net DebtSecuritiesHeldToMaturityUnamortizedPremiumNet	21942000	usd
	us-gaap	Heldtomaturity Securities Sold Security Realized Gain Loss Excluding Other Than Temporary Impairments HeldtomaturitySecuritiesSoldSecurityRealizedGainLossExcludingOtherThanTemporaryImpairments	0	usd
	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	0	usd
CY2023Q2	fhlbi	Held To Maturity Principal Outstanding Minimum Percentage Collected Prior To Sale HeldToMaturityPrincipalOutstandingMinimumPercentageCollectedPriorToSale	0.85
	fhlbi	Held To Maturity Principal Outstanding Minimum Percentage Collected Prior To Sale HeldToMaturityPrincipalOutstandingMinimumPercentageCollectedPriorToSale	0.85
	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	9769000	usd
CY2024Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2024Q2	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	0	usd
CY2024Q2	us-gaap	Weighted Average Interest Rate On Overdrawn Demand Deposit WeightedAverageInterestRateOnOverdrawnDemandDeposit	0
CY2023Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	2000	usd
CY2023Q4	us-gaap	Weighted Average Interest Rate On Overdrawn Demand Deposit WeightedAverageInterestRateOnOverdrawnDemandDeposit	0.0776
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Next Rolling Twelve Months FederalHomeLoanBankAdvancesMaturitiesSummaryInNextRollingTwelveMonths	11132790000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Next Twelve Rolling Months FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInNextTwelveRollingMonths	0.0469
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Next Rolling Twelve Months FederalHomeLoanBankAdvancesMaturitiesSummaryInNextRollingTwelveMonths	9780116000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Next Twelve Rolling Months FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInNextTwelveRollingMonths	0.0488
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Two FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearTwo	3664606000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Two FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearTwo	0.0362
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Two FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearTwo	4362389000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Two FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearTwo	0.0333
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Three FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearThree	2763033000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Three FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearThree	0.0355
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Three FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearThree	2683356000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Three FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearThree	0.0325
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Four FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearFour	7086282000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Four FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearFour	0.0438
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Four FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearFour	4573456000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Four FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearFour	0.0437
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Five FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearFive	4234109000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Five FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearFive	0.0431
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Five FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearFive	5531135000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Five FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearFive	0.0430
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Maturities Summary After Rolling Year Five FederalHomeLoanBankAdvancesMaturitiesSummaryAfterRollingYearFive	8168439000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing After Rolling Year Five FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingAfterRollingYearFive	0.0372
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary After Rolling Year Five FederalHomeLoanBankAdvancesMaturitiesSummaryAfterRollingYearFive	8946614000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing After Rolling Year Five FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingAfterRollingYearFive	0.0344
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Par Value FederalHomeLoanBankAdvancesParValue	37049259000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate FederalHomeLoanBankAdvancesWeightedAverageInterestRate	0.0418
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing After Rolling Year Five FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingAfterRollingYearFive	0.0372
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary After Rolling Year Five FederalHomeLoanBankAdvancesMaturitiesSummaryAfterRollingYearFive	8946614000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing After Rolling Year Five FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingAfterRollingYearFive	0.0344
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Par Value FederalHomeLoanBankAdvancesParValue	37049259000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate FederalHomeLoanBankAdvancesWeightedAverageInterestRate	0.0418
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Par Value FederalHomeLoanBankAdvancesParValue	35877068000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate FederalHomeLoanBankAdvancesWeightedAverageInterestRate	0.0406
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Valuation Adjustments For Hedging Activities FederalHomeLoanBankAdvancesValuationAdjustmentsForHedgingActivities	-496306000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Valuation Adjustments For Hedging Activities FederalHomeLoanBankAdvancesValuationAdjustmentsForHedgingActivities	-319721000	usd
CY2024Q2	fhlbi	Unamortized Swap Termination Fees Associated With Modified Advances Net Of Deferred Prepayment Fees UnamortizedSwapTerminationFeesAssociatedWithModifiedAdvancesNetOfDeferredPrepaymentFees	3427000	usd
CY2023Q4	fhlbi	Unamortized Swap Termination Fees Associated With Modified Advances Net Of Deferred Prepayment Fees UnamortizedSwapTerminationFeesAssociatedWithModifiedAdvancesNetOfDeferredPrepaymentFees	4497000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances FederalHomeLoanBankAdvances	36556380000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances FederalHomeLoanBankAdvances	35561844000	usd
CY2023Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	2000	usd
CY2023Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	2000	usd
CY2024Q2	fhlbi	Percent Of Advances Par Value Held By Top Borrower PercentOfAdvancesParValueHeldByTopBorrower	0.13
CY2023Q4	fhlbi	Percent Of Advances Par Value Held By Top Borrower PercentOfAdvancesParValueHeldByTopBorrower	0.12
CY2024Q2	fhlbi	Percentof Advances Par Value Heldby Top Five Borrowers PercentofAdvancesParValueHeldbyTopFiveBorrowers	0.38
CY2023Q4	fhlbi	Percentof Advances Par Value Heldby Top Five Borrowers PercentofAdvancesParValueHeldbyTopFiveBorrowers	0.35
CY2024Q2	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	71477389000	usd
CY2024Q2	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	815373000	usd
CY2024Q2	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	1416781000	usd
CY2023Q4	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	737842000	usd
CY2024Q2	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	299120000	usd
CY2024Q2	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1414439000	usd
CY2023Q4	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	216678000	usd
CY2023Q4	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1526872000	usd
CY2024Q2	us-gaap	Derivative Assets DerivativeAssets	516253000	usd
CY2024Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	2342000	usd
CY2023Q4	us-gaap	Derivative Assets DerivativeAssets	521164000	usd
CY2023Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	6940000	usd
CY2024Q2	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	1322576000	usd
CY2023Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	1451464000	usd
CY2024Q2	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	207258000	usd
CY2023Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	141271000	usd
CY2024Q2	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	2140000	usd
CY2023Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	15670000	usd
CY2024Q2	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	815269000	usd
CY2024Q2	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1416637000	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	737635000	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1533463000	usd
CY2024Q2	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	299120000	usd
CY2024Q2	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1414439000	usd
CY2023Q4	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	216678000	usd
CY2023Q4	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1526872000	usd
CY2024Q2	us-gaap	Derivative Asset After Offset Subject To Master Netting Arrangement DerivativeAssetAfterOffsetSubjectToMasterNettingArrangement	516149000	usd
CY2024Q2	us-gaap	Derivative Liability After Offset Subject To Master Netting Arrangement DerivativeLiabilityAfterOffsetSubjectToMasterNettingArrangement	2198000	usd
CY2023Q4	us-gaap	Derivative Asset After Offset Subject To Master Netting Arrangement DerivativeAssetAfterOffsetSubjectToMasterNettingArrangement	520957000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Par Value FederalHomeLoanBankAdvancesParValue	35877068000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate FederalHomeLoanBankAdvancesWeightedAverageInterestRate	0.0406
CY2024Q2	us-gaap	Federal Home Loan Bank Advances Valuation Adjustments For Hedging Activities FederalHomeLoanBankAdvancesValuationAdjustmentsForHedgingActivities	-496306000	usd
CY2024Q2	fhlbi	Unamortized Swap Termination Fees Associated With Modified Advances Net Of Deferred Prepayment Fees UnamortizedSwapTerminationFeesAssociatedWithModifiedAdvancesNetOfDeferredPrepaymentFees	3427000	usd
CY2023Q4	fhlbi	Unamortized Swap Termination Fees Associated With Modified Advances Net Of Deferred Prepayment Fees UnamortizedSwapTerminationFeesAssociatedWithModifiedAdvancesNetOfDeferredPrepaymentFees	4497000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Advances FederalHomeLoanBankAdvances	36556380000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances FederalHomeLoanBankAdvances	35561844000	usd
CY2024Q2	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	0	usd
CY2024Q2	fhlbi	Percent Of Advances Par Value Held By Top Borrower PercentOfAdvancesParValueHeldByTopBorrower	0.13
CY2023Q4	fhlbi	Percent Of Advances Par Value Held By Top Borrower PercentOfAdvancesParValueHeldByTopBorrower	0.12
CY2024Q2	fhlbi	Percentof Advances Par Value Heldby Top Five Borrowers PercentofAdvancesParValueHeldbyTopFiveBorrowers	0.38
CY2023Q4	fhlbi	Percentof Advances Par Value Heldby Top Five Borrowers PercentofAdvancesParValueHeldbyTopFiveBorrowers	0.35
CY2024Q2	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	71477389000	usd
CY2024Q2	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	815373000	usd
CY2024Q2	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	1416781000	usd
CY2023Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	76872100000	usd
CY2023Q4	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	737842000	usd
CY2023Q4	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	1533812000	usd
CY2024Q2	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	299120000	usd
CY2024Q2	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1414439000	usd
CY2023Q4	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	216678000	usd
CY2023Q4	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1526872000	usd
CY2024Q2	us-gaap	Derivative Assets DerivativeAssets	516253000	usd
CY2024Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	2342000	usd
CY2023Q4	us-gaap	Derivative Assets DerivativeAssets	521164000	usd
CY2023Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	6940000	usd
CY2024Q2	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	1322576000	usd
CY2023Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	1451464000	usd
CY2024Q2	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	207258000	usd
CY2023Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	141271000	usd
CY2024Q2	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	2140000	usd
CY2023Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	15670000	usd
CY2024Q2	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	815269000	usd
CY2024Q2	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1416637000	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	737635000	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1533463000	usd
CY2024Q2	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	299120000	usd
CY2024Q2	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1414439000	usd
CY2023Q4	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	216678000	usd
CY2023Q4	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1526872000	usd
CY2024Q2	us-gaap	Derivative Asset After Offset Subject To Master Netting Arrangement DerivativeAssetAfterOffsetSubjectToMasterNettingArrangement	516149000	usd
CY2024Q2	us-gaap	Derivative Liability After Offset Subject To Master Netting Arrangement DerivativeLiabilityAfterOffsetSubjectToMasterNettingArrangement	2198000	usd
CY2023Q4	us-gaap	Derivative Asset After Offset Subject To Master Netting Arrangement DerivativeAssetAfterOffsetSubjectToMasterNettingArrangement	520957000	usd
CY2023Q4	us-gaap	Derivative Liability After Offset Subject To Master Netting Arrangement DerivativeLiabilityAfterOffsetSubjectToMasterNettingArrangement	6591000	usd
CY2024Q2	us-gaap	Derivative Asset Not Subject To Master Netting Arrangement DerivativeAssetNotSubjectToMasterNettingArrangement	104000	usd
CY2024Q2	us-gaap	Derivative Liability Not Subject To Master Netting Arrangement DerivativeLiabilityNotSubjectToMasterNettingArrangement	144000	usd
CY2023Q4	us-gaap	Derivative Asset Not Subject To Master Netting Arrangement DerivativeAssetNotSubjectToMasterNettingArrangement	207000	usd
CY2023Q4	us-gaap	Derivative Liability After Offset Subject To Master Netting Arrangement DerivativeLiabilityAfterOffsetSubjectToMasterNettingArrangement	6591000	usd
CY2024Q2	us-gaap	Derivative Asset Not Subject To Master Netting Arrangement DerivativeAssetNotSubjectToMasterNettingArrangement	104000	usd
CY2024Q2	us-gaap	Derivative Liability Not Subject To Master Netting Arrangement DerivativeLiabilityNotSubjectToMasterNettingArrangement	144000	usd
CY2023Q4	us-gaap	Derivative Asset Not Subject To Master Netting Arrangement DerivativeAssetNotSubjectToMasterNettingArrangement	207000	usd
CY2023Q4	us-gaap	Derivative Liability Not Subject To Master Netting Arrangement DerivativeLiabilityNotSubjectToMasterNettingArrangement	349000	usd
CY2024Q2	us-gaap	Derivative Assets DerivativeAssets	516253000	usd
CY2024Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	2342000	usd
CY2023Q4	us-gaap	Derivative Assets DerivativeAssets	521164000	usd
CY2023Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	6940000	usd
CY2024Q2	us-gaap	Interest Income Federal Home Loan Bank Advances InterestIncomeFederalHomeLoanBankAdvances	508287000	usd
CY2024Q2	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	222574000	usd
CY2024Q2	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	643171000	usd
CY2024Q2	fhlbi	Total Net Interest Income Expense Recorded On Statement Of Income Advances Afs Securities And Co Bonds TotalNetInterestIncomeExpenseRecordedOnStatementOfIncomeAdvancesAFSSecuritiesAndCOBonds	87690000	usd
CY2023Q2	us-gaap	Interest Income Federal Home Loan Bank Advances InterestIncomeFederalHomeLoanBankAdvances	491905000	usd
CY2023Q2	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	200507000	usd
CY2023Q2	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	543752000	usd
CY2023Q2	fhlbi	Total Net Interest Income Expense Recorded On Statement Of Income Advances Afs Securities And Co Bonds TotalNetInterestIncomeExpenseRecordedOnStatementOfIncomeAdvancesAFSSecuritiesAndCOBonds	148660000	usd
	us-gaap	Interest Income Federal Home Loan Bank Advances InterestIncomeFederalHomeLoanBankAdvances	1023144000	usd
	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	442941000	usd
	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	1264584000	usd
	fhlbi	Total Net Interest Income Expense Recorded On Statement Of Income Advances Afs Securities And Co Bonds TotalNetInterestIncomeExpenseRecordedOnStatementOfIncomeAdvancesAFSSecuritiesAndCOBonds	201501000	usd
	us-gaap	Interest Income Federal Home Loan Bank Advances InterestIncomeFederalHomeLoanBankAdvances	926134000	usd
	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	372226000	usd
	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	990426000	usd
	fhlbi	Total Net Interest Income Expense Recorded On Statement Of Income Advances Afs Securities And Co Bonds TotalNetInterestIncomeExpenseRecordedOnStatementOfIncomeAdvancesAFSSecuritiesAndCOBonds	307934000	usd
CY2024Q2	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-644000	usd
CY2023Q2	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	4970000	usd
	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	8480000	usd
	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	3607000	usd
CY2024Q2	us-gaap	Hedged Liability Fair Value Hedge HedgedLiabilityFairValueHedge	29909431000	usd
CY2023Q4	us-gaap	Hedged Liability Fair Value Hedge HedgedLiabilityFairValueHedge	36682911000	usd
CY2023Q4	us-gaap	Obligation With Joint And Several Liability Arrangement Amount Outstanding ObligationWithJointAndSeveralLiabilityArrangementAmountOutstanding	1200000000000	usd
CY2024Q2	us-gaap	Obligation With Joint And Several Liability Arrangement Amount Outstanding ObligationWithJointAndSeveralLiabilityArrangementAmountOutstanding	1200000000000	usd
CY2023Q4	us-gaap	Derivative Liability Not Subject To Master Netting Arrangement DerivativeLiabilityNotSubjectToMasterNettingArrangement	349000	usd
CY2024Q2	us-gaap	Derivative Assets DerivativeAssets	516253000	usd
CY2024Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	2342000	usd
CY2023Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	6940000	usd
CY2024Q2	us-gaap	Interest Income Federal Home Loan Bank Advances InterestIncomeFederalHomeLoanBankAdvances	508287000	usd
CY2024Q2	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	222574000	usd
CY2024Q2	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	643171000	usd
CY2024Q2	fhlbi	Total Net Interest Income Expense Recorded On Statement Of Income Advances Afs Securities And Co Bonds TotalNetInterestIncomeExpenseRecordedOnStatementOfIncomeAdvancesAFSSecuritiesAndCOBonds	87690000	usd
CY2023Q2	us-gaap	Interest Income Federal Home Loan Bank Advances InterestIncomeFederalHomeLoanBankAdvances	491905000	usd
CY2023Q2	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	200507000	usd
	us-gaap	Interest Income Federal Home Loan Bank Advances InterestIncomeFederalHomeLoanBankAdvances	1023144000	usd
	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	442941000	usd
	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	1264584000	usd
	fhlbi	Total Net Interest Income Expense Recorded On Statement Of Income Advances Afs Securities And Co Bonds TotalNetInterestIncomeExpenseRecordedOnStatementOfIncomeAdvancesAFSSecuritiesAndCOBonds	201501000	usd
	us-gaap	Interest Income Federal Home Loan Bank Advances InterestIncomeFederalHomeLoanBankAdvances	926134000	usd
	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	372226000	usd
	fhlbi	Total Net Interest Income Expense Recorded On Statement Of Income Advances Afs Securities And Co Bonds TotalNetInterestIncomeExpenseRecordedOnStatementOfIncomeAdvancesAFSSecuritiesAndCOBonds	307934000	usd
CY2024Q2	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-644000	usd
CY2023Q2	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	4970000	usd
	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	8480000	usd
	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	3607000	usd
CY2024Q2	us-gaap	Hedged Liability Fair Value Hedge HedgedLiabilityFairValueHedge	29909431000	usd
CY2023Q4	us-gaap	Hedged Liability Fair Value Hedge HedgedLiabilityFairValueHedge	36682911000	usd
CY2023Q4	us-gaap	Obligation With Joint And Several Liability Arrangement Amount Outstanding ObligationWithJointAndSeveralLiabilityArrangementAmountOutstanding	1200000000000	usd
CY2024Q2	us-gaap	Obligation With Joint And Several Liability Arrangement Amount Outstanding ObligationWithJointAndSeveralLiabilityArrangementAmountOutstanding	1200000000000	usd
CY2024Q2	fhlbi	Discount Notes Maturity Period DiscountNotesMaturityPeriod	P1Y
CY2024Q2	us-gaap	Federal Home Loan Bank Consolidated Obligations Discount Notes FederalHomeLoanBankConsolidatedObligationsDiscountNotes	22442697000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Consolidated Obligations Discount Notes FederalHomeLoanBankConsolidatedObligationsDiscountNotes	22621837000	usd
CY2024Q2	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0533
CY2023Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0535
CY2024Q2	fhlbi	Discount Notes Maturity Period DiscountNotesMaturityPeriod	P1Y
CY2024Q2	us-gaap	Federal Home Loan Bank Consolidated Obligations Discount Notes FederalHomeLoanBankConsolidatedObligationsDiscountNotes	22442697000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Consolidated Obligations Discount Notes FederalHomeLoanBankConsolidatedObligationsDiscountNotes	22621837000	usd
CY2024Q2	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0533
CY2023Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0535
CY2024Q2	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	52076360000	usd
CY2023Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	49827050000	usd
CY2024Q2	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	52076360000	usd
CY2023Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	49827050000	usd
CY2024Q1	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	77586000	usd
CY2023Q1	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	46615000	usd
CY2024Q2	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	52076360000	usd
CY2023Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	49827050000	usd
CY2024Q2	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	52076360000	usd
CY2023Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	49827050000	usd
CY2024Q1	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	77586000	usd
CY2023Q1	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	46615000	usd
CY2023Q4	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	68301000	usd
CY2022Q4	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	38170000	usd
CY2024Q2	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	10488000	usd
CY2023Q2	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	10637000	usd
	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	21623000	usd
	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	21280000	usd
CY2024Q2	fhlbi	Voluntary Contribution Expense Designated To Statutory Ahp VoluntaryContributionExpenseDesignatedToStatutoryAHP	3444000	usd
CY2023Q2	fhlbi	Voluntary Contribution Expense Designated To Statutory Ahp VoluntaryContributionExpenseDesignatedToStatutoryAHP	0	usd
	fhlbi	Voluntary Contribution Expense Designated To Statutory Ahp VoluntaryContributionExpenseDesignatedToStatutoryAHP	3444000	usd
CY2024Q2	us-gaap	Payments For Affordable Housing Programs PaymentsForAffordableHousingPrograms	17727000	usd
CY2023Q2	us-gaap	Payments For Affordable Housing Programs PaymentsForAffordableHousingPrograms	4117000	usd
	us-gaap	Payments For Affordable Housing Programs PaymentsForAffordableHousingPrograms	19577000	usd
	us-gaap	Payments For Affordable Housing Programs PaymentsForAffordableHousingPrograms	6315000	usd
CY2023Q4	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	68301000	usd
CY2022Q4	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	38170000	usd
CY2024Q2	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	10488000	usd
CY2023Q2	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	10637000	usd
	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	21623000	usd
	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	21280000	usd
CY2024Q2	fhlbi	Voluntary Contribution Expense Designated To Statutory Ahp VoluntaryContributionExpenseDesignatedToStatutoryAHP	3444000	usd
CY2023Q2	fhlbi	Voluntary Contribution Expense Designated To Statutory Ahp VoluntaryContributionExpenseDesignatedToStatutoryAHP	0	usd
	fhlbi	Voluntary Contribution Expense Designated To Statutory Ahp VoluntaryContributionExpenseDesignatedToStatutoryAHP	3444000	usd
	fhlbi	Voluntary Contribution Expense Designated To Statutory Ahp VoluntaryContributionExpenseDesignatedToStatutoryAHP	0	usd
CY2024Q2	us-gaap	Payments For Affordable Housing Programs PaymentsForAffordableHousingPrograms	17727000	usd
CY2023Q2	us-gaap	Payments For Affordable Housing Programs PaymentsForAffordableHousingPrograms	4117000	usd
	us-gaap	Payments For Affordable Housing Programs PaymentsForAffordableHousingPrograms	19577000	usd
	us-gaap	Payments For Affordable Housing Programs PaymentsForAffordableHousingPrograms	6315000	usd
CY2024Q2	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	73791000	usd
CY2023Q2	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	53135000	usd
CY2024Q2	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	73791000	usd
CY2023Q2	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	53135000	usd
CY2024Q1	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	367444000	usd
CY2023Q1	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	372487000	usd
CY2023Q4	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	369041000	usd
CY2022Q4	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	372503000	usd
CY2023Q2	us-gaap	Net Shares Reclassified To Mandatorily Redeemable Capital Stock Value NetSharesReclassifiedToMandatorilyRedeemableCapitalStockValue	0	usd
	us-gaap	Net Shares Reclassified To Mandatorily Redeemable Capital Stock Value NetSharesReclassifiedToMandatorilyRedeemableCapitalStockValue	0	usd
	us-gaap	Net Shares Reclassified To Mandatorily Redeemable Capital Stock Value NetSharesReclassifiedToMandatorilyRedeemableCapitalStockValue	13000	usd
CY2024Q2	us-gaap	Repayments Of Mandatory Redeemable Capital Securities RepaymentsOfMandatoryRedeemableCapitalSecurities	4326000	usd
CY2023Q2	us-gaap	Repayments Of Mandatory Redeemable Capital Securities RepaymentsOfMandatoryRedeemableCapitalSecurities	1865000	usd
	us-gaap	Repayments Of Mandatory Redeemable Capital Securities RepaymentsOfMandatoryRedeemableCapitalSecurities	5923000	usd
	us-gaap	Repayments Of Mandatory Redeemable Capital Securities RepaymentsOfMandatoryRedeemableCapitalSecurities	1894000	usd
CY2024Q2	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	363118000	usd
CY2023Q2	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	370622000	usd
CY2024Q2	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	363118000	usd
CY2023Q2	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	370622000	usd
CY2024Q2	us-gaap	Financial Instruments Subject To Mandatory Redemption Past Contractual Redemption Date Due To Outstanding Activity FinancialInstrumentsSubjectToMandatoryRedemptionPastContractualRedemptionDateDueToOutstandingActivity	857000	usd
CY2023Q4	us-gaap	Financial Instruments Subject To Mandatory Redemption Past Contractual Redemption Date Due To Outstanding Activity FinancialInstrumentsSubjectToMandatoryRedemptionPastContractualRedemptionDateDueToOutstandingActivity	738000	usd
CY2024Q2	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable Within One Year FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableWithinOneYear	12124000	usd
CY2023Q4	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable Within One Year FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableWithinOneYear	15047000	usd
CY2024Q2	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Two FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearTwo	16059000	usd
CY2023Q4	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Two FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearTwo	19179000	usd
CY2024Q2	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Three FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearThree	3674000	usd
CY2023Q4	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Three FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearThree	3674000	usd
CY2024Q2	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Four FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearFour	329245000	usd
CY2023Q4	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Four FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearFour	329232000	usd
CY2024Q2	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Five FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearFive	1159000	usd
CY2023Q2	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	53135000	usd
CY2024Q2	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	73791000	usd
CY2023Q2	us-gaap	Affordable Housing Program Obligation AffordableHousingProgramObligation	53135000	usd
CY2024Q1	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	367444000	usd
CY2023Q1	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	372487000	usd
CY2023Q4	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	369041000	usd
CY2022Q4	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	372503000	usd
CY2024Q2	us-gaap	Net Shares Reclassified To Mandatorily Redeemable Capital Stock Value NetSharesReclassifiedToMandatorilyRedeemableCapitalStockValue	0	usd
CY2023Q2	us-gaap	Net Shares Reclassified To Mandatorily Redeemable Capital Stock Value NetSharesReclassifiedToMandatorilyRedeemableCapitalStockValue	0	usd
	us-gaap	Net Shares Reclassified To Mandatorily Redeemable Capital Stock Value NetSharesReclassifiedToMandatorilyRedeemableCapitalStockValue	0	usd
	us-gaap	Net Shares Reclassified To Mandatorily Redeemable Capital Stock Value NetSharesReclassifiedToMandatorilyRedeemableCapitalStockValue	13000	usd
CY2024Q2	us-gaap	Repayments Of Mandatory Redeemable Capital Securities RepaymentsOfMandatoryRedeemableCapitalSecurities	4326000	usd
CY2023Q2	us-gaap	Repayments Of Mandatory Redeemable Capital Securities RepaymentsOfMandatoryRedeemableCapitalSecurities	1865000	usd
	us-gaap	Repayments Of Mandatory Redeemable Capital Securities RepaymentsOfMandatoryRedeemableCapitalSecurities	5923000	usd
	us-gaap	Repayments Of Mandatory Redeemable Capital Securities RepaymentsOfMandatoryRedeemableCapitalSecurities	1894000	usd
CY2024Q2	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	363118000	usd
CY2023Q2	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	370622000	usd
CY2024Q2	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	363118000	usd
CY2023Q2	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	370622000	usd
CY2024Q2	us-gaap	Financial Instruments Subject To Mandatory Redemption Past Contractual Redemption Date Due To Outstanding Activity FinancialInstrumentsSubjectToMandatoryRedemptionPastContractualRedemptionDateDueToOutstandingActivity	857000	usd
CY2023Q4	us-gaap	Financial Instruments Subject To Mandatory Redemption Past Contractual Redemption Date Due To Outstanding Activity FinancialInstrumentsSubjectToMandatoryRedemptionPastContractualRedemptionDateDueToOutstandingActivity	738000	usd
CY2024Q2	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable Within One Year FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableWithinOneYear	12124000	usd
CY2023Q4	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable Within One Year FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableWithinOneYear	15047000	usd
CY2024Q2	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Two FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearTwo	16059000	usd
CY2023Q4	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Two FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearTwo	19179000	usd
CY2024Q2	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Three FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearThree	3674000	usd
CY2023Q4	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Three FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearThree	3674000	usd
CY2024Q2	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Four FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearFour	329245000	usd
CY2023Q4	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Four FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearFour	329232000	usd
CY2024Q2	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Five FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearFive	1159000	usd
CY2023Q4	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Five FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearFive	1171000	usd
CY2024Q2	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	363118000	usd
CY2023Q4	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	369041000	usd
CY2023Q2	us-gaap	Interest Expense Capital Securities InterestExpenseCapitalSecurities	4370000	usd
	us-gaap	Interest Expense Capital Securities InterestExpenseCapitalSecurities	10848000	usd
	us-gaap	Interest Expense Capital Securities InterestExpenseCapitalSecurities	8480000	usd
CY2024Q2	fhlbi	Retained Earnings Appropriated Transfers To From RetainedEarningsAppropriatedTransfersToFrom	0	usd
CY2023Q4	us-gaap	Financial Instruments Subject To Mandatory Redemption Redeemable In Year Five FinancialInstrumentsSubjectToMandatoryRedemptionRedeemableInYearFive	1171000	usd
CY2024Q2	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	363118000	usd
CY2023Q4	us-gaap	Shares Subject To Mandatory Redemption Settlement Terms Amount SharesSubjectToMandatoryRedemptionSettlementTermsAmount	369041000	usd
CY2023Q4	fhlbi	Outstanding Stock Held By Captive Insurer OutstandingStockHeldByCaptiveInsurer	5175000	usd
CY2024Q2	us-gaap	Interest Expense Capital Securities InterestExpenseCapitalSecurities	5505000	usd
CY2023Q2	us-gaap	Interest Expense Capital Securities InterestExpenseCapitalSecurities	4370000	usd
	us-gaap	Interest Expense Capital Securities InterestExpenseCapitalSecurities	10848000	usd
	us-gaap	Interest Expense Capital Securities InterestExpenseCapitalSecurities	8480000	usd
CY2024Q2	fhlbi	Retained Earnings Appropriated Transfers To From RetainedEarningsAppropriatedTransfersToFrom	0	usd
CY2023Q2	fhlbi	Retained Earnings Appropriated Transfers To From RetainedEarningsAppropriatedTransfersToFrom	1000	usd
	fhlbi	Retained Earnings Appropriated Transfers To From RetainedEarningsAppropriatedTransfersToFrom	0	usd
	fhlbi	Retained Earnings Appropriated Transfers To From RetainedEarningsAppropriatedTransfersToFrom	707000	usd
CY2024Q2	us-gaap	Distributions On Mandatorily Redeemable Securities DistributionsOnMandatorilyRedeemableSecurities	5505000	usd
CY2023Q2	us-gaap	Distributions On Mandatorily Redeemable Securities DistributionsOnMandatorilyRedeemableSecurities	4371000	usd
	us-gaap	Distributions On Mandatorily Redeemable Securities DistributionsOnMandatorilyRedeemableSecurities	10848000	usd
	us-gaap	Distributions On Mandatorily Redeemable Securities DistributionsOnMandatorilyRedeemableSecurities	9187000	usd
CY2024Q2	fhlbi	Numberof Finance Agency Regulatory Capital Requirements NumberofFinanceAgencyRegulatoryCapitalRequirements	3	capital_requirement
CY2024Q2	us-gaap	Federal Home Loan Bank Risk Based Capital Required FederalHomeLoanBankRiskBasedCapitalRequired	1150586000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Risk Based Capital Actual FederalHomeLoanBankRiskBasedCapitalActual	4332907000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Risk Based Capital Required FederalHomeLoanBankRiskBasedCapitalRequired	1277258000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Risk Based Capital Actual FederalHomeLoanBankRiskBasedCapitalActual	4186470000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Regulatory Capital Required FederalHomeLoanBankRegulatoryCapitalRequired	3169806000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Regulatory Capital Actual FederalHomeLoanBankRegulatoryCapitalActual	4332907000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Regulatory Capital Required FederalHomeLoanBankRegulatoryCapitalRequired	3064336000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Regulatory Capital Actual FederalHomeLoanBankRegulatoryCapitalActual	4186470000	usd
CY2024Q2	fhlbi	Regulatory Capital Ratio Required RegulatoryCapitalRatioRequired	0.0400
CY2024Q2	us-gaap	Federal Home Loan Bank Regulatory Capital Ratio Actual FederalHomeLoanBankRegulatoryCapitalRatioActual	0.0547
CY2023Q4	fhlbi	Regulatory Capital Ratio Required RegulatoryCapitalRatioRequired	0.0400
CY2023Q4	us-gaap	Federal Home Loan Bank Regulatory Capital Ratio Actual FederalHomeLoanBankRegulatoryCapitalRatioActual	0.0546
CY2024Q2	us-gaap	Federal Home Loan Bank Leverage Capital Required FederalHomeLoanBankLeverageCapitalRequired	3962258000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Leverage Capital Actual FederalHomeLoanBankLeverageCapitalActual	6499360000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Leverage Capital Required FederalHomeLoanBankLeverageCapitalRequired	3830420000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Leverage Capital Actual FederalHomeLoanBankLeverageCapitalActual	6279705000	usd
CY2024Q2	fhlbi	Leverage Ratio Required LeverageRatioRequired	0.0500
CY2024Q2	us-gaap	Federal Home Loan Bank Leverage Ratio Actual1 FederalHomeLoanBankLeverageRatioActual1	0.0820
CY2023Q4	fhlbi	Leverage Ratio Required LeverageRatioRequired	0.0500
CY2023Q4	us-gaap	Federal Home Loan Bank Leverage Ratio Actual1 FederalHomeLoanBankLeverageRatioActual1	0.0820
CY2023Q2	fhlbi	Retained Earnings Appropriated Transfers To From RetainedEarningsAppropriatedTransfersToFrom	1000	usd
	fhlbi	Retained Earnings Appropriated Transfers To From RetainedEarningsAppropriatedTransfersToFrom	0	usd
CY2023Q2	us-gaap	Distributions On Mandatorily Redeemable Securities DistributionsOnMandatorilyRedeemableSecurities	4371000	usd
	us-gaap	Distributions On Mandatorily Redeemable Securities DistributionsOnMandatorilyRedeemableSecurities	10848000	usd
	us-gaap	Distributions On Mandatorily Redeemable Securities DistributionsOnMandatorilyRedeemableSecurities	9187000	usd
CY2024Q2	fhlbi	Numberof Finance Agency Regulatory Capital Requirements NumberofFinanceAgencyRegulatoryCapitalRequirements	3	capital_requirement
CY2024Q2	us-gaap	Federal Home Loan Bank Risk Based Capital Required FederalHomeLoanBankRiskBasedCapitalRequired	1150586000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Risk Based Capital Actual FederalHomeLoanBankRiskBasedCapitalActual	4332907000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Risk Based Capital Required FederalHomeLoanBankRiskBasedCapitalRequired	1277258000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Risk Based Capital Actual FederalHomeLoanBankRiskBasedCapitalActual	4186470000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Regulatory Capital Required FederalHomeLoanBankRegulatoryCapitalRequired	3169806000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Regulatory Capital Actual FederalHomeLoanBankRegulatoryCapitalActual	4332907000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Regulatory Capital Required FederalHomeLoanBankRegulatoryCapitalRequired	3064336000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Regulatory Capital Actual FederalHomeLoanBankRegulatoryCapitalActual	4186470000	usd
CY2024Q2	fhlbi	Regulatory Capital Ratio Required RegulatoryCapitalRatioRequired	0.0400
CY2024Q2	us-gaap	Federal Home Loan Bank Regulatory Capital Ratio Actual FederalHomeLoanBankRegulatoryCapitalRatioActual	0.0547
CY2023Q4	fhlbi	Regulatory Capital Ratio Required RegulatoryCapitalRatioRequired	0.0400
CY2023Q4	us-gaap	Federal Home Loan Bank Regulatory Capital Ratio Actual FederalHomeLoanBankRegulatoryCapitalRatioActual	0.0546
CY2024Q2	us-gaap	Federal Home Loan Bank Leverage Capital Required FederalHomeLoanBankLeverageCapitalRequired	3962258000	usd
CY2024Q2	us-gaap	Federal Home Loan Bank Leverage Capital Actual FederalHomeLoanBankLeverageCapitalActual	6499360000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Leverage Capital Required FederalHomeLoanBankLeverageCapitalRequired	3830420000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Leverage Capital Actual FederalHomeLoanBankLeverageCapitalActual	6279705000	usd
CY2024Q2	fhlbi	Leverage Ratio Required LeverageRatioRequired	0.0500
CY2024Q2	us-gaap	Federal Home Loan Bank Leverage Ratio Actual1 FederalHomeLoanBankLeverageRatioActual1	0.0820
CY2023Q4	fhlbi	Leverage Ratio Required LeverageRatioRequired	0.0500
CY2023Q4	us-gaap	Federal Home Loan Bank Leverage Ratio Actual1 FederalHomeLoanBankLeverageRatioActual1	0.0820
CY2024Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	124894000	usd
CY2023Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	123593000	usd
CY2024Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-21000	usd
CY2023Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-3000	usd
CY2024Q2	us-gaap	Noninterest Income NoninterestIncome	6733000	usd
CY2023Q2	us-gaap	Noninterest Income NoninterestIncome	9151000	usd
CY2024Q2	us-gaap	Noninterest Expense NoninterestExpense	32273000	usd
CY2023Q2	us-gaap	Noninterest Expense NoninterestExpense	30748000	usd
CY2024Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	99375000	usd
CY2023Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	101999000	usd
CY2024Q2	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	10488000	usd
CY2023Q2	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	10637000	usd
CY2024Q2	us-gaap	Net Income Loss Attributable To Parent Net Of Federal Home Loan Bank Assessments NetIncomeLossAttributableToParentNetOfFederalHomeLoanBankAssessments	88887000	usd
CY2023Q2	us-gaap	Net Income Loss Attributable To Parent Net Of Federal Home Loan Bank Assessments NetIncomeLossAttributableToParentNetOfFederalHomeLoanBankAssessments	91362000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	254293000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	227242000	usd
CY2024Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	124894000	usd
CY2023Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	123593000	usd
CY2024Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-21000	usd
CY2023Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-3000	usd
CY2024Q2	us-gaap	Noninterest Income NoninterestIncome	6733000	usd
CY2023Q2	us-gaap	Noninterest Income NoninterestIncome	9151000	usd
CY2024Q2	us-gaap	Noninterest Expense NoninterestExpense	32273000	usd
CY2023Q2	us-gaap	Noninterest Expense NoninterestExpense	30748000	usd
CY2024Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	99375000	usd
CY2023Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	101999000	usd
CY2024Q2	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	10488000	usd
CY2023Q2	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	10637000	usd
CY2024Q2	us-gaap	Net Income Loss Attributable To Parent Net Of Federal Home Loan Bank Assessments NetIncomeLossAttributableToParentNetOfFederalHomeLoanBankAssessments	88887000	usd
CY2023Q2	us-gaap	Net Income Loss Attributable To Parent Net Of Federal Home Loan Bank Assessments NetIncomeLossAttributableToParentNetOfFederalHomeLoanBankAssessments	91362000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	254293000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	227242000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-46000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-2000	usd
	us-gaap	Noninterest Income NoninterestIncome	16091000	usd
	us-gaap	Noninterest Income NoninterestIncome	39298000	usd
	us-gaap	Noninterest Expense NoninterestExpense	65047000	usd
	us-gaap	Noninterest Expense NoninterestExpense	62219000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	205383000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	204323000	usd
	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	21623000	usd
	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	21280000	usd
	us-gaap	Net Income Loss Attributable To Parent Net Of Federal Home Loan Bank Assessments NetIncomeLossAttributableToParentNetOfFederalHomeLoanBankAssessments	183760000	usd
	us-gaap	Net Income Loss Attributable To Parent Net Of Federal Home Loan Bank Assessments NetIncomeLossAttributableToParentNetOfFederalHomeLoanBankAssessments	183043000	usd
CY2024Q2	us-gaap	Assets Assets	79245161000	usd
CY2023Q4	us-gaap	Assets Assets	76608404000	usd
CY2024Q2	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	299120000	usd
CY2024Q2	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1414439000	usd
CY2023Q4	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	216678000	usd
CY2023Q4	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1526872000	usd
	fhlbi	Changes To Valuation Techniques And Significant Assumptions ChangesToValuationTechniquesAndSignificantAssumptions	0
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-46000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-2000	usd
	us-gaap	Noninterest Income NoninterestIncome	16091000	usd
	us-gaap	Noninterest Income NoninterestIncome	39298000	usd
	us-gaap	Noninterest Expense NoninterestExpense	65047000	usd
	us-gaap	Noninterest Expense NoninterestExpense	62219000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	205383000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	204323000	usd
	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	21623000	usd
	us-gaap	Affordable Housing Program Assessments AffordableHousingProgramAssessments	21280000	usd
	us-gaap	Net Income Loss Attributable To Parent Net Of Federal Home Loan Bank Assessments NetIncomeLossAttributableToParentNetOfFederalHomeLoanBankAssessments	183760000	usd
	us-gaap	Net Income Loss Attributable To Parent Net Of Federal Home Loan Bank Assessments NetIncomeLossAttributableToParentNetOfFederalHomeLoanBankAssessments	183043000	usd
CY2024Q2	us-gaap	Assets Assets	79245161000	usd
CY2023Q4	us-gaap	Assets Assets	76608404000	usd
CY2024Q2	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	299120000	usd
CY2024Q2	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1414439000	usd
CY2023Q4	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	216678000	usd
CY2023Q4	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1526872000	usd
	fhlbi	Changes To Valuation Techniques And Significant Assumptions ChangesToValuationTechniquesAndSignificantAssumptions	0
	fhlbi	Time Period Of Commitment To Fund Additional Advances TimePeriodOfCommitmentToFundAdditionalAdvances	P6M
	fhlbi	Time Period Of Commitment To Purchase Mortgage Loans Net TimePeriodOfCommitmentToPurchaseMortgageLoansNet	P91D
CY2024Q2	fhlbi	Cash Collateral Pledged CashCollateralPledged	1318864000	usd
CY2023Q4	fhlbi	Cash Collateral Pledged CashCollateralPledged	1447218000	usd
	fhlbi	Standby Bond Purchase Agreements Acquired And Sold At Par During The Period StandbyBondPurchaseAgreementsAcquiredAndSoldAtParDuringThePeriod	0	usd
	fhlbi	Time Period Of Commitment To Fund Additional Advances TimePeriodOfCommitmentToFundAdditionalAdvances	P6M
	fhlbi	Time Period Of Commitment To Purchase Mortgage Loans Net TimePeriodOfCommitmentToPurchaseMortgageLoansNet	P91D
CY2024Q2	fhlbi	Cash Collateral Pledged CashCollateralPledged	1318864000	usd
CY2023Q4	fhlbi	Cash Collateral Pledged CashCollateralPledged	1447218000	usd
	fhlbi	Standby Bond Purchase Agreements Acquired And Sold At Par During The Period StandbyBondPurchaseAgreementsAcquiredAndSoldAtParDuringThePeriod	0	usd
CY2023Q2	us-gaap	Loans To Other Federal Home Loan Banks LoansToOtherFederalHomeLoanBanks	250000	usd
CY2023Q4	us-gaap	Loans From Other Federal Home Loan Banks LoansFromOtherFederalHomeLoanBanks	0	usd
CY2024Q2	us-gaap	Loans To Other Federal Home Loan Banks LoansToOtherFederalHomeLoanBanks	0	usd
CY2023Q4	us-gaap	Loans To Other Federal Home Loan Banks LoansToOtherFederalHomeLoanBanks	0	usd
CY2024Q2	us-gaap	Loans From Other Federal Home Loan Banks LoansFromOtherFederalHomeLoanBanks	0	usd
CY2023Q2	us-gaap	Loans To Other Federal Home Loan Banks LoansToOtherFederalHomeLoanBanks	250000	usd
CY2023Q4	us-gaap	Loans From Other Federal Home Loan Banks LoansFromOtherFederalHomeLoanBanks	0	usd
CY2024Q2	us-gaap	Loans To Other Federal Home Loan Banks LoansToOtherFederalHomeLoanBanks	0	usd
CY2023Q4	us-gaap	Loans To Other Federal Home Loan Banks LoansToOtherFederalHomeLoanBanks	0	usd
CY2024Q2	us-gaap	Loans From Other Federal Home Loan Banks LoansFromOtherFederalHomeLoanBanks	0	usd

Files In Submission

Name	View Source	Status
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fhlbi-20240630_cal.xml	Edgar Link	unprocessable
fhlbi-20240630_def.xml	Edgar Link	unprocessable
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ex311june302024.htm	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable

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Federal Home Loan Bank of Indianapolis

2024 Q2 Form 10-Q Financial Statement

#000133175424000160 Filed on August 08, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission