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Business Segments (Summary Of Company's Segment Results) (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Segment Reporting Information [Line Items] |  |  |  |
Revenues | [1] | $ 33 | $ 33 |
Net gains (losses) on financial instruments at fair value and foreign exchange |  | 4 | (13) |
Net gains (losses) on extinguishment of debt |  | 1 | 0 |
Revenues of consolidated VIEs |  | (25) | (18) |
Inter-segment revenues | [2] | 0 | 0 |
Total revenues |  | 13 | 2 |
Losses and loss adjustment |  | 18 | 6 |
Amortization of deferred acquisition costs and operating |  | 26 | 24 |
Interest |  | 52 | 51 |
Expenses of consolidated VIEs |  | 4 | 4 |
Inter-segment expenses | [2] | 0 | 0 |
Total expenses |  | 100 | 85 |
Income (loss) from continuing operations before income taxes |  | (87) | (83) |
Identifiable assets per segment |  | 2,414 |  |
Assets held for sale |  | 74 |  |
Total identifiable assets |  | 2,488 |  | $ 2,606
Operating Segments [Member] | US Public Finance Insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | [1] | 19 | 22 |
Net gains (losses) on financial instruments at fair value and foreign exchange |  | 1 | 2 |
Net gains (losses) on extinguishment of debt |  | 0 |  |
Revenues of consolidated VIEs |  | 0 | 0 |
Inter-segment revenues | [2] | 6 | 7 |
Total revenues |  | 26 | 31 |
Losses and loss adjustment |  | 22 | 0 |
Amortization of deferred acquisition costs and operating |  | 2 | 2 |
Interest |  | 0 | 0 |
Expenses of consolidated VIEs |  | 0 | 0 |
Inter-segment expenses | [2] | 11 | 12 |
Total expenses |  | 35 | 14 |
Income (loss) from continuing operations before income taxes |  | (9) | 17 |
Identifiable assets per segment |  | 1,720 |  |
Assets held for sale |  | 0 |  |
Total identifiable assets |  | 1,720 |  |
Operating Segments [Member] | Corporate Operations [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | [1] | 7 | 5 |
Net gains (losses) on financial instruments at fair value and foreign exchange |  | 8 | (12) |
Net gains (losses) on extinguishment of debt |  | 1 |  |
Revenues of consolidated VIEs |  | 0 | 0 |
Inter-segment revenues | [2] | 15 | 14 |
Total revenues |  | 31 | 7 |
Losses and loss adjustment |  | 0 | 0 |
Amortization of deferred acquisition costs and operating |  | 21 | 18 |
Interest |  | 13 | 14 |
Expenses of consolidated VIEs |  | 0 | 0 |
Inter-segment expenses | [2] | 6 | 6 |
Total expenses |  | 40 | 38 |
Income (loss) from continuing operations before income taxes |  | (9) | (31) |
Identifiable assets per segment |  | 710 |  |
Assets held for sale |  | 0 |  |
Total identifiable assets |  | 710 |  |
Operating Segments [Member] | International And Structured Finance Insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | [1] | 7 | 6 |
Net gains (losses) on financial instruments at fair value and foreign exchange |  | (5) | (3) |
Net gains (losses) on extinguishment of debt |  | 0 |  |
Revenues of consolidated VIEs |  | (25) | (18) |
Inter-segment revenues | [2] | 1 | 2 |
Total revenues |  | (22) | (13) |
Losses and loss adjustment |  | (4) | 6 |
Amortization of deferred acquisition costs and operating |  | 2 | 3 |
Interest |  | 39 | 37 |
Expenses of consolidated VIEs |  | 4 | 4 |
Inter-segment expenses | [2] | 6 | 6 |
Total expenses |  | 47 | 56 |
Income (loss) from continuing operations before income taxes |  | (69) | (69) |
Identifiable assets per segment |  | 928 |  |
Assets held for sale |  | 0 |  |
Total identifiable assets |  | 928 |  |
Intersegment Elimination [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | [1] | 0 | 0 |
Net gains (losses) on financial instruments at fair value and foreign exchange |  | 0 | 0 |
Net gains (losses) on extinguishment of debt |  | 0 |  |
Revenues of consolidated VIEs |  | 0 | 0 |
Inter-segment revenues | [2] | (22) | (23) |
Total revenues |  | (22) | (23) |
Losses and loss adjustment |  | 0 | 0 |
Amortization of deferred acquisition costs and operating |  | 1 | 1 |
Interest |  | 0 | 0 |
Expenses of consolidated VIEs |  | 0 | 0 |
Inter-segment expenses | [2] | (23) | (24) |
Total expenses |  | (22) | (23) |
Income (loss) from continuing operations before income taxes |  | 0 | $ 0 |
Identifiable assets per segment | [3] | (944) |  |
Assets held for sale |  | 0 |  |
Total identifiable assets |  | $ (944) |  |
[1] | Consists of net premiums earned, net investment income, net realized investment gains (losses) and other net realized gains (losses).
[2] | Primarily represents intercompany service charges and intercompany net investment income and expenses.
[3] | Consists principally of intercompany reinsurance balances.

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