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Business Segments (Summary Of Company's Segment Results) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenues | $ 25 | [1] | $ 31 | [2] | $ 47 | [3] | $ 65 | [4] |
Net gains (losses) on financial instruments at fair value and foreign exchange | (2) |  | (55) |  | (17) |  | (51) |  |
Revenues of consolidated VIEs |  |  | (13) |  | 7 |  | (38) |  |
Inter-segment revenues | 0 | [5] | 0 | [6] | 0 | [7] | 0 | [8] |
Total revenues | 23 | [9] | (37) | [10] | 37 | [11] | (24) | [12] |
Losses and loss adjustment | 8 |  | 142 |  | 16 |  | 160 |  |
Compensation and benefits | 12 |  | 9 |  | 21 |  | 28 |  |
Interest | 48 |  | 53 |  | 98 |  | 105 |  |
Inter-segment service charge | 0 |  | 0 |  | 0 |  | 0 |  |
Other segment items | 11 | [13] | 12 | [14] | 20 | [15] | 23 | [16] |
Total expenses | 79 |  | 216 |  | 155 |  | 316 |  |
Income (loss) from continuing operations before income taxes | (56) |  | (253) |  | (118) |  | (340) |  |
Total assets per reportable segment | 2,123 |  | 2,233 |  | 2,123 |  | 2,233 |  |
Assets held for sale | 11 |  | 71 |  | 11 |  | 71 |  |
Total assets | 2,134 |  | 2,304 |  | 2,134 |  | 2,304 |  | $ 2,168
Operating Segments [Member] | US Public Finance Insurance [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenues | 15 | [1] | 16 | [2] | 26 | [3] | 35 | [4] |
Net gains (losses) on financial instruments at fair value and foreign exchange | 1 |  | 0 |  | 1 |  | 1 |  |
Revenues of consolidated VIEs |  |  | 0 |  | 0 |  | 0 |  |
Inter-segment revenues | 7 | [5] | 7 | [6] | 13 | [7] | 13 | [8] |
Total revenues | 23 | [9] | 23 | [10] | 40 | [11] | 49 | [12] |
Losses and loss adjustment | 6 |  | 141 |  | 9 |  | 163 |  |
Compensation and benefits | 0 |  | 0 |  | 0 |  | 0 |  |
Interest | 0 |  | 0 |  | 0 |  | 0 |  |
Inter-segment service charge | 7 |  | 9 |  | 17 |  | 19 |  |
Other segment items | 3 | [13] | 3 | [14] | 7 | [15] | 6 | [16] |
Total expenses | 16 |  | 153 |  | 33 |  | 188 |  |
Income (loss) from continuing operations before income taxes | 7 |  | (130) |  | 7 |  | (139) |  |
Total assets per reportable segment | 1,544 |  | 1,671 |  | 1,544 |  | 1,671 |  |
Operating Segments [Member] | Corporate Operations [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenues | 5 | [1] | 8 | [2] | 11 | [3] | 16 | [4] |
Net gains (losses) on financial instruments at fair value and foreign exchange | (3) |  | 4 |  | (8) |  | 12 |  |
Revenues of consolidated VIEs |  |  | 0 |  | 0 |  | 0 |  |
Inter-segment revenues | 12 | [5] | 15 | [6] | 27 | [7] | 30 | [8] |
Total revenues | 14 | [9] | 27 | [10] | 30 | [11] | 58 | [12] |
Losses and loss adjustment | 0 |  | 0 |  | 0 |  | 0 |  |
Compensation and benefits | 12 |  | 9 |  | 21 |  | 28 |  |
Interest | 18 |  | 18 |  | 36 |  | 36 |  |
Inter-segment service charge | 0 |  | 0 |  | 0 |  | 0 |  |
Other segment items | 4 | [13] | 4 | [14] | 8 | [15] | 7 | [16] |
Total expenses | 34 |  | 31 |  | 65 |  | 71 |  |
Income (loss) from continuing operations before income taxes | (20) |  | (4) |  | (35) |  | (13) |  |
Total assets per reportable segment | 677 |  | 657 |  | 677 |  | 657 |  |
Operating Segments [Member] | International And Structured Finance Insurance [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenues | 5 | [1] | 8 | [2] | 10 | [3] | 15 | [4] |
Net gains (losses) on financial instruments at fair value and foreign exchange | 0 |  | (59) |  | (10) |  | (64) |  |
Revenues of consolidated VIEs |  |  | (13) |  | 7 |  | (38) |  |
Inter-segment revenues | 1 | [5] | 1 | [6] | 3 | [7] | 2 | [8] |
Total revenues | 6 | [9] | (63) | [10] | 10 | [11] | (85) | [12] |
Losses and loss adjustment | 2 |  | 1 |  | 7 |  | (3) |  |
Compensation and benefits | 0 |  | 0 |  | 0 |  | 0 |  |
Interest | 36 |  | 41 |  | 74 |  | 81 |  |
Inter-segment service charge | 3 |  | 6 |  | 7 |  | 10 |  |
Other segment items | 7 | [13] | 8 | [14] | 11 | [15] | 15 | [16] |
Total expenses | 48 |  | 56 |  | 99 |  | 103 |  |
Income (loss) from continuing operations before income taxes | (42) |  | (119) |  | (89) |  | (188) |  |
Total assets per reportable segment | 805 |  | 846 |  | 805 |  | 846 |  |
Intersegment Elimination [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenues | 0 | [1] | 1 | [2] | 0 | [3] | 1 | [4] |
Net gains (losses) on financial instruments at fair value and foreign exchange | 0 |  | 0 |  | 0 |  | 0 |  |
Revenues of consolidated VIEs |  |  | 0 |  | 0 |  | 0 |  |
Inter-segment revenues | (20) | [5] | (23) | [6] | (43) | [7] | (45) | [8] |
Total revenues | (20) | [9] | (24) | [10] | (43) | [11] | (46) | [12] |
Losses and loss adjustment | 0 |  | 0 |  | 0 |  | 0 |  |
Compensation and benefits | 0 |  | 0 |  | 0 |  | 0 |  |
Interest | (6) |  | (6) |  | (12) |  | (12) |  |
Inter-segment service charge | (10) |  | (15) |  | (24) |  | (29) |  |
Other segment items | (3) | [13] | (3) | [14] | (6) | [15] | (5) | [16] |
Total expenses | (19) |  | (24) |  | (42) |  | (46) |  |
Income (loss) from continuing operations before income taxes | (1) |  | 0 |  | (1) |  | 0 |  |
Total assets per reportable segment | $ (903) | [8],[17] | $ (941) | [18],[19] | $ (903) | [8],[17] | $ (941) | [18],[19] |
[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), fees and reimbursements and other net realized gains (losses).
[3] | Consists primarily of net premiums earned, net investment income, net realized investment gains (losses), fees and reimbursements and other net realized gains (losses).
[4] | Consists primarily of net premiums earned, net investment income, net realized investment gains (losses) and other net realized gains (losses).
[5] | Primarily represents intercompany service charges and intercompany net investment income.
[6] | Primarily represents intercompany service charges and intercompany net investment income.
[7] | Primarily represents intercompany service charges and intercompany net investment income.
[8] | Primarily represents intercompany service charges and intercompany net investment income.
[9] | Includes net investment income of $15 million, $6 million, $3 million, and ($5) million for the U.S. Public Finance, Corporate, International and Structured Finance, and Eliminations segments, respectively.
[10] | Includes net investment income of $17 million, $8 million, $2 million, and ($5) million for the U.S. Public Finance, Corporate, International and Structured Finance, and Eliminations segments, respectively.
[11] | Includes net investment income of $30 million, $13 million, $6 million, and ($12) million for the U.S. Public Finance, Corporate, International and Structured Finance, and Eliminations segments, respectively.
[12] | Includes net investment income of $35 million, $16 million, $5 million, and ($11) million for the U.S. Public Finance, Corporate, International and Structured Finance, and Eliminations segments, respectively.
[13] | 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.
[14] | 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.
[15] | 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.
[16] | 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.
[17] | Consists principally of intercompany reinsurance balances.
[18] | Consists principally of intercompany reinsurance balances.
[19] | Consists principally of intercompany reinsurance balances

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