Consolidated Statements Of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Premiums, fees and reimbursements received	$ 12	$ 17
Investment income received	77	68
Financial guarantee losses and loss adjustment expenses paid	(210)	(481)
Proceeds from recoveries and reinsurance, net of salvage paid to reinsurers	11	647
Operating expenses paid and other operating	(55)	(79)
Other proceeds from consolidated variable interest entities	28	0
Interest paid, net of interest converted to principal	(49)	(35)
Cash (used) provided by discontinued operations	(7)	3
Net cash provided (used) by operating activities	(193)	140
Cash flows from investing activities:
Purchases of available-for-sale investments	(352)	(836)
Sales of available-for-sale investments	380	859
Paydowns, maturities and other proceeds of available-for-sale investments	187	325
Purchases of investments at fair value	(61)	(121)
Sales, paydowns, maturities and other proceeds of investments at fair value	251	189
Sales, paydowns and maturities (purchases) of short-term investments, net	(86)	(371)
Paydowns and maturities of loans receivable	7	7
Consolidation of variable interest entities	0	2
Deconsolidation of variable interest entities	(2)	0
(Payments) proceeds for derivative settlements	(8)	(9)
Proceeds (payments) from discontinued operations	(9)	10
Net cash provided (used) by investing activities	307	55
Cash flows from financing activities:
Proceeds from investment agreements	6	6
Principal paydowns of investment agreements	(4)	(9)
Principal paydowns of medium-term notes	(10)	(74)
Proceeds from variable interest entity debt	62	2
Principal paydowns/redemptions of variable interest entity debt	(141)	(122)
Principal paydowns of long-term debt	0	(29)
Purchases of treasury stock	(35)	(3)
Cash provided (used) by discontinued operations	5	0
Net cash provided (used) by financing activities	(117)	(229)
Effect of exchange rate changes on cash and cash equivalents	0	(2)
Net increase (decrease) in cash and cash equivalents	(3)	(36)
Cash and cash equivalents - beginning of period	78	160
Cash and cash equivalents - end of period	75	124
Reconciliation of net income (loss) to net cash provided (used) by operating activities:
Net income (loss)	(348)	(143)
Income (loss) from discontinued operations, net of income taxes	(2)	1
Income (loss) from continuing operations	(346)	(144)
Change in:
Unearned premium revenue	(26)	(35)
Loss and loss adjustment expense reserves	1	145
Insurance loss recoverable	(40)	106
Accrued interest payable	100	86
Other liabilities	10	(49)
Net realized investment gains (losses)	23	37
Net (gains) losses on financial instruments at fair value and foreign exchange	27	(35)
Other net realized (gains) losses	30	13
Other operating	28	16
Total adjustments to income (loss) from continuing operations	153	284
Net cash provided (used) by operating activities	(193)	140
Non-cash investing and finanacing activities:
Loans receivable disposed of a variable interest entity	28	0
Other investments, received from sale of net assets held for sale	3	0
Fixed-maturity securities held as available-for-sale, received as salvage	0	459
Investments carried at fair value, received as salvage	0	277
Variable interest entity notes disposed of upon deconsolidation	$ 22	$ 0