Condensed Consolidated Statements of Operations (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues
Net earned premiums	$ 145	$ 164
Net investment income	101	122
Net realized investment gains (losses):
Other-than-temporary impairment losses	(11)	(1)
Less: portion of other-than-temporary impairment loss recognized in other comprehensive income	(3)	8
Net impairment loss	(8)	(9)
Other net realized investment gains (losses)	3	41
Net realized investment gains (losses)	(5)	32
Net change in fair value of credit derivatives:
Realized gains (losses) and other settlements	2	15
Net unrealized gains (losses)	32	39
Net change in fair value of credit derivatives	34	54
Fair value gains (losses) on financial guaranty variable interest entities	4	10
Bargain purchase gain and settlement of pre-existing relationships	0	58
Commutation gains	1	73
Other income (loss)	13	14
Total revenues	293	527
Expenses
Loss and loss adjustment expenses	(18)	59
Amortization of deferred acquisition costs	5	4
Interest expense	24	24
Other operating expenses	65	68
Total expenses	76	155
Income (loss) before income taxes	217	372
Provision (benefit) for income taxes
Current	(37)	51
Deferred	57	4
Total provision (benefit) for income taxes	20	55
Net income (loss)	$ 197	$ 317
Earnings per share:
Basic (in dollars per share)	$ 1.71	$ 2.53
Diluted (in dollars per share)	1.68	2.49
Dividends (in dollars per share)	$ 0.16	$ 0.1425