0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONSOLIDATED BALANCE SHEETS (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Interest Income and Interest Expense link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Investment Securities link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Loans link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Allowance for Credit Losses link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Short-Term Borrowings link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Long-Term Debt link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Subordinated Deferrable Debt link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Derivative Instruments and Hedging Activities link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Equity link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Guarantees link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Fair Value Measurement link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Variable Interest Entities link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Business Segments link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Interest Income and Interest Expense (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Investment Securities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Loans (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Allowance for Credit Losses (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Short-Term Borrowings (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Long-Term Debt (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Derivative Instruments and Hedging Activities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Equity (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Guarantees (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Fair Value Measurement (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Variable Interest Entities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Business Segments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Summary of Significant Accounting Policies (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Interest Income and Interest Expense - Schedule of Interest Income and Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Interest Income and Interest Expense - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Investment Securities - Schedule of Investment Debt Securities Portfolio and Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Investment Securities - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Loans - Schedule of Loans Outstanding to Members and Unadvanced Commitments by Loan Type and by Member Class (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Loans - Additional Information - Loan Sales (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Loans - Additional Information - Accrued Interest Receivable (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Loans - Additional Information - Credit Concentration (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Loans - Schedule of Payment Status of Loans Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Loans - Additional Information - Loan Modifications to Borrowers Experiencing Financial Difficulty (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Loans - Additional Information - Loans on Nonaccrual Status (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Loans - Additional Information - Net Charge-offs (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Loans - Additional Information - Borrower Risk Ratings (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Loans - Schedule of Loans Outstanding by Borrower Risk Ratings and Origination Year (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Loans - Schedule of Unadvanced Commitments (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Loans - Schedule of Available Balance and Maturities of Lines of Credit (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Loans - Additional Information - Unadvanced Loan Commitments (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Loans - Schedule of Available Balance Under Committed Lines of Credit and the Related Maturities by Fiscal Year (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Loans - Schedule of Pledged Collateral Loans (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Allowance for Credit Losses - Schedule of Allowance for Credit Losses on Financing Receivables (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Allowance for Credit Losses - Schedule of Allowance for Credit Losses and Recorded Investment in Financing Receivables (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Allowance for Credit Losses - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Short-Term Borrowings - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Short-Term Borrowings - Schedule of Short-term Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Short-Term Borrowings - Schedule of Total Available and Outstanding Letters of Credit Under the Revolving Credit Agreements (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Long-Term Debt - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Long-Term Debt - Schedule of Long-term Debt Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Long-Term Debt - Schedule of Long-term Debt Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Subordinated Deferrable Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Derivative Instruments and Hedging Activities - Schedule of Notional Amounts and Weighted Average Rates Paid and Received (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Derivative Instruments and Hedging Activities - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Derivative Instruments and Hedging Activities - Schedule of Fair Values and Notional Amounts of Outstanding Derivatives (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Derivative Instruments and Hedging Activities - Schedule of Derivatives Offsetting (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Derivative Instruments and Hedging Activities - Schedule of Gains and Losses Recorded on the Consolidated Statements of Operations for the Entity's Interest Rate Swaps (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Derivative Instruments and Hedging Activities - Schedule of Notional Amounts of Derivative Instruments Having Rating Triggers (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Equity - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Equity - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Guarantees - Schedule of Total Guarantees by Type of Guarantee and Member Class (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Guarantees - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Fair Value Measurement - Schedule of Fair Value by Balance Sheet Grouping (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Fair Value Measurement - Schedule of the Entity's Assets and Liabilities that are Measured at Fair Value on a Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Fair Value Measurement - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Variable Interest Entities - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - Variable Interest Entities - Schedule of Assets and Liabilities of Variable Interest Entities (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Variable Interest Entities - Schedule of Variable Interest Entities, Credit Commitments (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - Business Segments - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - Business Segments - Schedule of Segment Presentation for the Consolidated Statements of Operations and Consolidated Balance Sheets (Details) link:presentationLink link:calculationLink link:definitionLink