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Fair Value - Schedule of Fair Value Measurements - Reconciliation of Level 3 Assets And Liabilities (Details) - Fair value, measurements, recurring - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Derivative liabilities, net of derivative assets |  |  |  |
Liabilities |  |  |  |
Fair value at beginning of the period | $ 4 | $ 3 | $ 3 | $ 8
Net realized/unrealized gains |  |  |  |
Included in earnings | 0 | (5) | (1) | (14)
Included in OCI | 0 | 0 | 0 | 0
Purchases and originations | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Issuances | 0 | 0 | 0 | 0
Settlements | (4) | 0 | (4) | (5)
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 5 | 2 | 14
Fair value at ending of the period | 0 | 3 | 0 | 3
Net unrealized gains still held at September 30, |  |  |  |
Included in earnings | 0 | (2) | 0 | (7)
Included in OCI | 0 | 0 | 0 | 0
Equity securities |  |  |  |
Assets |  |  |  |
Fair value at beginning of the period | 0 | 0 | 0 | 1
Net realized/unrealized gains |  |  |  |
Included in earnings | 0 | 0 | 0 | 0
Included in OCI | 0 | 0 | 0 | 0
Purchases and originations | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Issuances | 0 | 0 | 0 | 0
Settlements | 0 | 0 | 0 | 0
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | (1)
Fair value at ending of the period | 0 | 0 | 0 | 0
Net unrealized gains still held at September 30, |  |  |  |
Included in earnings | 0 | 0 | 0 | 0
Included in OCI | 0 | 0 | 0 | 0
Available-for-sale securities |  |  |  |
Assets |  |  |  |
Fair value at beginning of the period | 35 | 11 | 35 | 9
Net realized/unrealized gains |  |  |  |
Included in earnings | 0 | 0 | 0 | 0
Included in OCI | 0 | 0 | 0 | 0
Purchases and originations | 0 | 27 | 0 | 29
Sales | 0 | 0 | 0 | 0
Issuances | 0 | 0 | 0 | 0
Settlements | 0 | 0 | 0 | 0
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Fair value at ending of the period | 35 | 38 | 35 | 38
Net unrealized gains still held at September 30, |  |  |  |
Included in earnings | 0 | 0 | 0 | 0
Included in OCI | 0 | 0 | 0 | 0
Available-for-sale debt security |  | 27 |  | 27
Loans held-for-sale |  |  |  |
Assets |  |  |  |
Fair value at beginning of the period | 0 | 2 | 5 | 0
Net realized/unrealized gains |  |  |  |
Included in earnings | 0 | 0 | 0 | 0
Included in OCI | 0 | 0 | 0 | 0
Purchases and originations | 0 | 16 | 9 | 18
Sales | 0 | (11) | (14) | (11)
Issuances | 0 | 0 | 0 | 0
Settlements | 0 | 0 | 0 | 0
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Fair value at ending of the period | 0 | 7 | 0 | 7
Net unrealized gains still held at September 30, |  |  |  |
Included in earnings | 0 | 0 | 0 | 0
Included in OCI | $ 0 | $ 0 | $ 0 | $ 0

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