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Business Segments (Summary Of Company's Segment Results) (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues | $ 22 | [1] | $ 34 | [2] |
Net gains (losses) on financial instruments at fair value and foreign exchange | (15) |  | 4 |  |
Revenues of consolidated VIEs | 7 |  | (25) |  |
Inter-segment revenues | 0 | [3] | 0 | [4] |
Total revenues | 14 | [5] | 13 | [6] |
Losses and loss adjustment | 8 |  | 18 |  |
Compensation and benefits | 9 |  | 19 |  |
Interest | 50 |  | 52 |  |
Inter-segment expenses | 0 |  | 0 |  |
Other segment items | 9 | [7] | 11 | [8] |
Total expenses | 76 |  | 100 |  |
Income (loss) from continuing operations before income taxes | (62) |  | (87) |  |
Total assets per reportable segment | 2,121 |  | 2,414 |  |
Assets held for sale | 11 |  | 74 |  |
Total assets | 2,132 |  | 2,488 |  | $ 2,168
Operating Segments [Member] | US Public Finance Insurance [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues | 11 | [1] | 19 | [2] |
Net gains (losses) on financial instruments at fair value and foreign exchange | 0 |  | 1 |  |
Revenues of consolidated VIEs | 0 |  | 0 |  |
Inter-segment revenues | 6 | [3] | 6 | [4] |
Total revenues | 17 | [5] | 26 | [6] |
Losses and loss adjustment | 3 |  | 22 |  |
Compensation and benefits | 0 |  | 0 |  |
Interest | 0 |  | 0 |  |
Inter-segment expenses | 10 |  | 10 |  |
Other segment items | 4 | [7] | 3 | [8] |
Total expenses | 17 |  | 35 |  |
Income (loss) from continuing operations before income taxes | 0 |  | (9) |  |
Total assets per reportable segment | 1,551 |  | 1,720 |  |
Operating Segments [Member] | Corporate Operations [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues | 6 | [1] | 8 | [2] |
Net gains (losses) on financial instruments at fair value and foreign exchange | (5) |  | 8 |  |
Revenues of consolidated VIEs | 0 |  | 0 |  |
Inter-segment revenues | 15 | [3] | 15 | [4] |
Total revenues | 16 | [5] | 31 | [6] |
Losses and loss adjustment | 0 |  | 0 |  |
Compensation and benefits | 9 |  | 19 |  |
Interest | 18 |  | 18 |  |
Inter-segment expenses | 0 |  | 0 |  |
Other segment items | 4 | [7] | 3 | [8] |
Total expenses | 31 |  | 40 |  |
Income (loss) from continuing operations before income taxes | (15) |  | (9) |  |
Total assets per reportable segment | 685 |  | 710 |  |
Operating Segments [Member] | International And Structured Finance Insurance [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues | 5 | [1] | 7 | [2] |
Net gains (losses) on financial instruments at fair value and foreign exchange | (10) |  | (5) |  |
Revenues of consolidated VIEs | 7 |  | (25) |  |
Inter-segment revenues | 2 | [3] | 1 | [4] |
Total revenues | 4 | [5] | (22) | [6] |
Losses and loss adjustment | 5 |  | (4) |  |
Compensation and benefits | 0 |  | 0 |  |
Interest | 38 |  | 40 |  |
Inter-segment expenses | 4 |  | 4 |  |
Other segment items | 4 | [7] | 7 | [8] |
Total expenses | 51 |  | 47 |  |
Income (loss) from continuing operations before income taxes | (47) |  | (69) |  |
Total assets per reportable segment | 821 |  | 928 |  |
Intersegment Elimination [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues | 0 | [1] | 0 | [2] |
Net gains (losses) on financial instruments at fair value and foreign exchange | 0 |  | 0 |  |
Revenues of consolidated VIEs | 0 |  | 0 |  |
Inter-segment revenues | (23) | [3] | (22) | [4] |
Total revenues | (23) | [5] | (22) | [6] |
Losses and loss adjustment | 0 |  | 0 |  |
Compensation and benefits | 0 |  | 0 |  |
Interest | (6) |  | (6) |  |
Inter-segment expenses | (14) |  | (14) |  |
Other segment items | (3) | [7] | (2) | [8] |
Total expenses | (23) |  | (22) |  |
Income (loss) from continuing operations before income taxes | 0 |  | 0 |  |
Total assets per reportable segment | $ (936) | [9] | $ (944) | [10] |
[1] | Consists primarily of net premiums earned, net investment income, net realized investment gains (losses), fees and reimbursements and other net realized gains (losses).
[2] | Consists primarily of net premiums earned, net investment income, net realized investment gains (losses) and other net realized gains (losses).
[3] | Primarily represents intercompany service charges and intercompany net investment income.
[4] | Primarily represents intercompany service charges and intercompany net investment income.
[5] | Includes net investment income of $15 million, $7 million, $3 million, and ($7) million for the U.S. Public Finance, Corporate, International and Structured Finance, and Eliminations segments, respectively.
[6] | Includes net investment income of $18 million, $8 million, $3 million, and ($6) million for the U.S. Public Finance, Corporate, International and Structured Finance, and Eliminations segments, respectively.
[7] | Other segment items for each reportable segment include: a. U.S. Public Finance Insurance - amortization of DAC, professional service fees, occupancy costs and other operating expenses; b. Corporate - professional service fees, occupancy costs and other operating expenses; c. International and Structured Finance Insurance - expenses of consolidated VIEs, amortization of DAC, professional service fees and other operating expenses, and d. Elimination - inter-segment amortization of DAC and inter-segment occupancy costs.
[8] | Other segment items for each reportable segment include: a. U.S. Public Finance Insurance - amortization of DAC, professional service fees, occupancy costs and other operating expenses; b. Corporate - professional service fees, occupancy costs and other operating expenses; c. International and Structured Finance Insurance - expenses of consolidated VIEs, amortization of DAC, professional service fees and other operating expenses, and d. Elimination - inter-segment amortization of DAC and inter-segment occupancy costs.
[9] | Consists principally of intercompany reinsurance balances.
[10] | Consists principally of intercompany reinsurance balances.

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