Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Premiums, fees and reimbursements received	$ 18	$ 25	$ 44
Investment income received	105	92	77
Proceeds from litigation settlement	0	18	0
Financial guarantee losses and loss adjustment expenses paid	(214)	(1,108)	(343)
Proceeds from recoveries and reinsurance, net of salvage paid to reinsurers	10	694	282
Proceeds from loan repurchase commitments	0	0	600
Operating expenses paid and other operating	(71)	(97)	(88)
Other proceeds from consolidated variable interest entities	28	0	0
Interest paid, net of interest converted to principal	(64)	(43)	(61)
Income taxes (paid) received	0	(1)	0
Cash (used) provided by discontinued operations	(7)	2	0
Net cash provided (used) by operating activities	(195)	(418)	511
Cash flows from investing activities:
Purchases of available-for-sale investments	(366)	(1,009)	(1,163)
Sales of available-for-sale investments	943	1,100	597
Paydowns, maturities and other proceeds of available-for-sale investments	214	411	626
Purchases of investments at fair value	(77)	(148)	(206)
Sales, paydowns, maturities and other proceeds of investments at fair value	279	228	174
Sales, paydowns and maturities (purchases) of short-term investments, net	(186)	31	(99)
Paydowns and maturities of loans receivable and other instruments at fair value	9	8	77
Consolidation of variable interest entities	0	2	0
Deconsolidation of variable interest entities	(2)	0	0
(Payments) proceeds for derivative settlements	(38)	(10)	(66)
Capital expenditures	0	0	(1)
Proceeds (payments) from discontinued operations	(9)	10	0
Net cash provided (used) by investing activities	767	623	(61)
Cash flows from financing activities:
Proceeds from investment agreements	7	8	2
Principal paydowns of investment agreements	(12)	(54)	(2)
Principal paydowns of medium-term notes	(15)	(74)	(81)
Proceeds from variable interest entity debt	62	2	0
Principal paydowns/redemptions of variable interest entity debt	(142)	(135)	(369)
Dividends paid	(409)	0	0
Principal paydowns of long-term debt	0	(29)	(6)
Purchases of treasury stock	(38)	(3)	(1)
Cash provided (used) by discontinued operations	5	0	0
Net cash provided (used) by financing activities	(542)	(285)	(457)
Effect of exchange rate changes on cash and cash equivalents	0	(2)	0
Net increase (decrease) in cash and cash equivalents	30	(82)	(7)
Cash and cash equivalents - beginning of period	78	160	167
Cash and cash equivalents - end of period	108	78	160
Reconciliation of net income (loss) to net cash provided (used) by operating activities:
Net income (loss)	(487)	(203)	(445)
Income (loss) from discontinued operations, net of income taxes	(3)	(54)	0
Income (loss) from continuing operations	(484)	(149)	(445)
Change in:
Premiums receivable	14	32	31
Unearned premium revenue	(34)	(56)	(83)
Loss and loss adjustment expense reserves	24	(468)	(102)
Insurance loss recoverable	(46)	120	381
Loan repurchase commitements	0	0	604
Accrued interest payable	133	121	107
Other liabilities	25	(43)	4
Net realized investment gains (losses)	76	41	(5)
Net (gains) losses on financial instruments at fair value and foreign exchange	41	(31)	(35)
Other net realized (gains) losses	30	(7)	21
Other operating	26	22	33
Total adjustments to income (loss) from continuing operations	289	(269)	956
Net cash provided (used) by operating activities	(195)	(418)	511
Non-cash investing and finanacing activities:
Loans receivable disposed of a variable interest entity	28	0	0
Other investments, received from sale of net assets held for sale	3	0	0
Fixed-maturity securities held as available-for-sale, received as salvage	0	582	0
Investments carried at fair value, received as salvage	0	277	0
Variable interest entity notes disposed of upon deconsolidation	$ 22	$ 0	$ 0