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Derivative and Hedging Activities - Derivatives Subject to a Master Netting Arrangement (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Derivatives designated hedging instruments: | Interest rate swaps on FHLB advances |  |
Liabilities |  |
Gross Amount |  | $ 2
Gross Amounts Netted in the Statements of Condition |  | 0
Net Amount Presented in the Statements of Condition |  | 2
Financial Instruments |  | 0
Cash Collateral Pledged (Received) |  | 75
Derivatives designated hedging instruments: | Interest rate swaps on multi-family loans held for investment |  |
Liabilities |  |
Gross Amount |  | 1
Gross Amounts Netted in the Statements of Condition |  | 0
Net Amount Presented in the Statements of Condition |  | 1
Financial Instruments |  | 0
Cash Collateral Pledged (Received) |  | 27
Derivatives not designated as hedging instruments: |  |
Assets |  |
Gross Amount | $ 120 | 126
Gross Amounts Netted in the Statements of Condition | 0 | 0
Net Amount Presented in the Statements of Condition | 120 | 126
Financial Instruments | 0 | 0
Cash Collateral Pledged (Received) | (3) | (35)
Liabilities |  |
Gross Amount | 72 | 92
Gross Amounts Netted in the Statements of Condition | 0 | 0
Net Amount Presented in the Statements of Condition | 72 | 92
Financial Instruments | 0 | 0
Cash Collateral Pledged (Received) | 106 | 102
Derivatives not designated as hedging instruments: | Mortgage-backed securities forwards |  |
Assets |  |
Gross Amount | 9 | 11
Gross Amounts Netted in the Statements of Condition | 0 | 0
Net Amount Presented in the Statements of Condition | 9 | 11
Financial Instruments | 0 | 0
Cash Collateral Pledged (Received) | 0 | (1)
Liabilities |  |
Gross Amount | 9 | 32
Gross Amounts Netted in the Statements of Condition | 0 | 0
Net Amount Presented in the Statements of Condition | 9 | 32
Financial Instruments | 0 | 0
Cash Collateral Pledged (Received) | 8 | 57
Derivatives not designated as hedging instruments: | Interest rate swaptions |  |
Assets |  |
Gross Amount | 111 | 115
Gross Amounts Netted in the Statements of Condition | 0 | 0
Net Amount Presented in the Statements of Condition | 111 | 115
Financial Instruments | 0 | 0
Cash Collateral Pledged (Received) | (3) | (34)
Derivatives not designated as hedging instruments: | Futures |  |
Assets |  |
Gross Amount | 0 |
Gross Amounts Netted in the Statements of Condition | 0 | 0
Net Amount Presented in the Statements of Condition | 0 | 0
Financial Instruments | 0 | 0
Cash Collateral Pledged (Received) | 0 | 0
Liabilities |  |
Gross Amount | 0 | 1
Gross Amounts Netted in the Statements of Condition | 0 | 0
Net Amount Presented in the Statements of Condition | 0 | 1
Financial Instruments | 0 |
Cash Collateral Pledged (Received) | 1 | 3
Derivatives not designated as hedging instruments: | Interest rate swaps |  |
Liabilities |  |
Gross Amount | 63 | 59
Gross Amounts Netted in the Statements of Condition | 0 | 0
Net Amount Presented in the Statements of Condition | 63 | 59
Financial Instruments | 0 | 0
Cash Collateral Pledged (Received) | $ 97 | $ 42

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