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Outstanding Exposure - Schedule of Non-Financial Guaranty Exposure (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Insurance securitizations |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Gross Exposure | $ 1,454 | $ 1,370
Net Exposure | 1,124 | 1,043
Insurance securitizations | Maximum |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Gross Exposure | 1,600 |
Net Exposure | 1,300 |
Diversified real estate |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Gross Exposure | 1,509 | 1,569
Net Exposure | 1,509 | 1,569
Pooled corporate obligations |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Gross Exposure | 694 | 488
Net Exposure | 694 | 488
Aircraft residual value insurance |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Gross Exposure | 308 | 355
Net Exposure | $ 176 | $ 200

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