Outstanding Exposure - Schedule of Non-Financial Guaranty Exposure (Details) - USD ($) $ in Billions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Diversified real estate | ||
| Schedule of Insured Financial Obligations [Line Items] | ||
| Gross Exposure | $ 1.9 | $ 2.0 |
| Net Exposure | 1.9 | 2.0 |
| Insurance reserve financing and securitizations | ||
| Schedule of Insured Financial Obligations [Line Items] | ||
| Gross Exposure | 1.6 | 1.5 |
| Net Exposure | 1.3 | 1.2 |
| Pooled corporate obligations | ||
| Schedule of Insured Financial Obligations [Line Items] | ||
| Gross Exposure | 1.0 | 0.9 |
| Net Exposure | 1.0 | 0.9 |
| Aircraft residual value insurance (RVI) | ||
| Schedule of Insured Financial Obligations [Line Items] | ||
| Gross Exposure | 0.2 | 0.2 |
| Net Exposure | $ 0.1 | $ 0.1 |