Condensed Consolidated Statements of Operations (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues
Net earned premiums	$ 121	$ 112	$ 224	$ 230
Net investment income	78	110	158	208
Asset management fees	20	0	43	0
Net realized investment gains (losses)	4	8	(1)	(4)
Net change in fair value of credit derivatives	100	(8)	23	(30)
Fair value gains (losses) on committed capital securities	(25)	19	23	10
Fair value gains (losses) on financial guaranty variable interest entities	1	33	(8)	38
Fair value gains (losses) on consolidated investment vehicles	31	0	19	0
Foreign exchange gains (losses) on remeasurement	2	(14)	(60)	(3)
Commutation gains (losses)	38	1	38	1
Other income (loss)	2	5	9	11
Total revenues	372	266	468	461
Expenses
Loss and loss adjustment expenses	37	(1)	57	45
Interest expense	21	22	43	45
Amortization of deferred acquisition costs	4	4	7	10
Employee compensation and benefit expenses	46	39	110	80
Other operating expenses	42	21	87	44
Total expenses	150	85	304	224
Income (loss) before income taxes and equity in net earnings of investees	222	181	164	237
Equity in net earnings of investees	0	1	(4)	3
Income (loss) before income taxes	222	182	160	240
Provision (benefit) for income taxes	34	40	30	44
Net income (loss)	188	142	130	196
Less: Noncontrolling interests	5	0	2	0
Net income (loss) attributable to Assured Guaranty Ltd.	$ 183	$ 142	$ 128	$ 196
Earnings per share:
Basic (in dollars per share)	$ 2.11	$ 1.40	$ 1.43	$ 1.92
Diluted (in dollars per share)	$ 2.10	$ 1.39	$ 1.42	$ 1.90