Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ (11)	$ (315)
Other Depreciation and Amortization	1	0
Adjustments to reconcile net income to net cash used in operating activities:
Amortization of bond premium and discount	(6)	(8)
Share-based compensation	6	6
Deferred income taxes	6	(8)
Current income taxes	(3)	(7)
Unearned premiums, net	(45)	(19)
Losses and loss expenses, net	(56)	71
Ceded premiums payable	7	(2)
Premium receivables	26	24
Accrued interest payable	45	46
Amortization of intangible assets	33	27
Net realized investment gains	(1)	(18)
Net realized gains (losses) on extinguishment of debt	(33)
Variable interest entity activities	(2)	(3)
Derivative assets and liabilities	(17)	21
Other, net	(33)	73
Net cash used in operating activities	(83)	(112)
Cash flows from investing activities:
Proceeds from sales of bonds	117	876
Proceeds from matured bonds	154	75
Purchases of bonds	(228)	(685)
Proceeds from sales of other invested assets	61	361
Purchases of other invested assets	(80)	(401)
Change in short-term investments	76	(38)
Change in cash collateral receivable	0	(13)
Proceeds from paydowns of consolidated VIE assets	87	98
Other, net	0	(2)
Net cash provided by investing activities	187	270
Cash flows from financing activities:
Paydowns of Ambac note	(16)	(103)
Tax payments related to shares withheld for share-based compensation plans	(6)	(3)
Proceeds from (Payments to) Noncontrolling Interests	(1)
Payments of consolidated VIE liabilities	(85)	(99)
Net cash used in financing activities	(107)	(205)
Effect of foreign exchange on cash, cash equivalents and restricted cash	0	0
Net cash flow	(4)	(47)
Cash, cash equivalents, and restricted cash at beginning of period	35	81
Cash, cash equivalents, and restricted cash at end of period	32	34
Net income attributable to common shareholders	(12)	(315)
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	$ 0	$ 0