Consolidated Statements Of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Premiums, fees and reimbursements received	$ 12	$ 12
Investment income received	41	41
Financial guarantee losses and loss adjustment expenses paid	(356)	(77)
Proceeds from recoveries and reinsurance, net of salvage paid to reinsurers	604	49
Proceeds from loan repurchase commitments	0	600
Operating expenses paid and other operating	(44)	(43)
Interest paid, net of interest converted to principal	(25)	(37)
Net cash provided (used) by operating activities	232	545
Cash flows from investing activities:
Purchases of available-for-sale investments	(662)	(671)
Sales of available-for-sale investments	520	396
Paydowns and maturities of available-for-sale investments	221	330
Purchases of investments at fair value	(82)	(103)
Sales, paydowns, maturities and other proceeds of investments at fair value	72	108
Sales, paydowns and maturities (purchases) of short-term investments, net	(78)	(138)
Paydowns and maturities of loans receivable	4	25
(Payments) proceeds for derivative settlements	(7)	(57)
Net cash provided (used) by investing activities	(12)	(110)
Cash flows from financing activities:
Proceeds from investment agreements	3	0
Principal paydowns of investment agreements	(2)	(2)
Principal paydowns of medium-term notes	(74)	(49)
Principal paydowns of variable interest entity notes	(68)	(203)
Principal paydowns of long-term debt	(29)	0
Purchases of treasury stock	(2)	(1)
Net cash provided (used) by financing activities	(172)	(255)
Effect of exchange rate changes on cash and cash equivalents	(1)	0
Net increase (decrease) in cash and cash equivalents	47	180
Cash and cash equivalents - beginning of period	160	167
Cash and cash equivalents - end of period	207	347
Reconciliation of net income (loss) to net cash provided (used) by operating activities:
Net income (loss)	(109)	(167)
Change in:
Premiums receivable	7	9
Unearned premium revenue	(25)	(33)
Loss and loss adjustment expense reserves	65	(40)
Insurance loss recoverable	302	116
Loan repurchase commitments	0	604
Accrued interest payable	51	52
Other liabilities	(54)	(6)
Net realized investment gains (losses)	24	1
Net (gains) losses on financial instruments at fair value and foreign exchange	(46)	(22)
Other net realized (gains) losses	19	5
Other operating	(2)	26
Total adjustments to net income (loss)	341	712
Net cash provided (used) by operating activities	232	545
Supplementary Disclosure of Consolidated Cash Flow Information
Fixed-maturity securities held as available-for-sale, received as salvage	459	0
Investments carried at fair value, received as salvage	$ 112	$ 0