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Derivative and Hedging Activities - Notional Amount and Fair Value of Derivative Financial Instruments (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Derivatives designated hedging instruments: | Cash flow hedging |  |
Liabilities |  |
Notional Amount | $ 5,500 | $ 3,750
Derivatives designated hedging instruments: | Other Assets | Cash flow hedging |  |
Liabilities |  |
Fair Value | 0 | 5
Derivatives designated hedging instruments: | Other Liabilities | Cash flow hedging |  |
Liabilities |  |
Fair Value | 7 | 0
Derivatives designated hedging instruments: | Interest rate swap on FHLB advances |  |
Liabilities |  |
Fair Value | 7 | 5
Derivatives designated hedging instruments: | Interest rate swap on FHLB advances | Cash flow hedging |  |
Liabilities |  |
Notional Amount | 5,500 | 3,750
Derivatives designated hedging instruments: | Interest rate swap on FHLB advances | Other Assets | Cash flow hedging |  |
Liabilities |  |
Fair Value | 0 | 5
Derivatives designated hedging instruments: | Interest rate swap on FHLB advances | Other Liabilities | Cash flow hedging |  |
Liabilities |  |
Fair Value | 7 | 0
Derivatives designated hedging instruments: | Interest rate swap on multi-family loans held for investment |  |
Liabilities |  |
Fair Value | 2 |
Derivatives designated hedging instruments: | Interest rate swap on multi-family loans held for investment | Fair value hedging |  |
Liabilities |  |
Notional Amount | 2,000 |
Derivatives designated hedging instruments: | Interest rate swap on multi-family loans held for investment | Other Assets | Fair value hedging |  |
Liabilities |  |
Fair Value | 0 |
Derivatives designated hedging instruments: | Interest rate swap on multi-family loans held for investment | Other Liabilities | Fair value hedging |  |
Liabilities |  |
Fair Value | 2 |
Derivatives not designated as hedging instruments: |  |
Assets |  |
Fair Value | 164 | 220
Liabilities |  |
Fair Value | 64 | 126
Derivatives not designated as hedging instruments: | Other Assets |  |
Assets |  |
Notional Amount | 9,823 | 11,403
Fair Value | 179 | 229
Liabilities |  |
Fair Value | 0 | 0
Derivatives not designated as hedging instruments: | Other Liabilities |  |
Assets |  |
Fair Value | 0 | 0
Liabilities |  |
Notional Amount | 3,931 | 3,711
Fair Value | 70 | 136
Derivatives not designated as hedging instruments: | Futures |  |
Assets |  |
Fair Value | 0 | 2
Liabilities |  |
Fair Value | 1 |
Derivatives not designated as hedging instruments: | Futures | Other Assets |  |
Assets |  |
Notional Amount | 0 | 1,205
Fair Value |  | 2
Derivatives not designated as hedging instruments: | Futures | Other Liabilities |  |
Assets |  |
Fair Value | 0 | 0
Derivatives not designated as hedging instruments: | Mortgage-backed securities forwards |  |
Assets |  |
Fair Value | 5 | 36
Liabilities |  |
Fair Value | 14 | 61
Derivatives not designated as hedging instruments: | Mortgage-backed securities forwards | Other Assets |  |
Assets |  |
Notional Amount | 542 | 1,065
Fair Value | 5 | 36
Liabilities |  |
Fair Value | 0 | 0
Derivatives not designated as hedging instruments: | Mortgage-backed securities forwards | Other Liabilities |  |
Assets |  |
Fair Value | 0 | 0
Liabilities |  |
Notional Amount | 1,466 | 739
Fair Value | 14 | 61
Derivatives not designated as hedging instruments: | Rate lock commitments | Other Assets |  |
Assets |  |
Notional Amount | 1,759 | 1,539
Fair Value | 15 | 9
Liabilities |  |
Fair Value | 0 | 0
Derivatives not designated as hedging instruments: | Rate lock commitments | Other Liabilities |  |
Assets |  |
Fair Value | 0 | 0
Liabilities |  |
Notional Amount | 218 | 527
Fair Value | 7 | 10
Derivatives not designated as hedging instruments: | Interest rate swaps and swaptions | Other Assets |  |
Assets |  |
Notional Amount | 7,522 | 7,594
Fair Value | 159 | 182
Liabilities |  |
Fair Value | 0 | 0
Derivatives not designated as hedging instruments: | Interest rate swaps and swaptions | Other Liabilities |  |
Assets |  |
Fair Value | 0 | 0
Liabilities |  |
Notional Amount | 2,247 | 2,445
Fair Value | $ 49 | $ 65

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