Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Investment portfolio:
Fixed-maturity securities, available-for-sale, at fair value (amortized cost of $8,266 and $8,204, net of allowance for credit loss of $39 and $78)	$ 8,819	$ 8,773
Short-term investments at fair value	1,087	851
Other invested assets (includes $115 and $106 measured at fair value)	237	214
Total investment portfolio	10,143	9,838
Cash	144	162
Premiums receivable, net of commissions payable	1,373	1,372
Deferred acquisition costs	126	119
Salvage and subrogation recoverable	986	991
Financial guaranty variable interest entities’ assets, at fair value	287	296
Assets of consolidated investment vehicles (includes $3,276 and $1,727 measured at fair value)	3,547	1,913
Goodwill and other intangible assets	181	203
Other assets (includes $131 and $145 measured at fair value)	439	440
Total assets	17,226	15,334
Liabilities
Unearned premium reserve	3,704	3,735
Loss and loss adjustment expense reserve	1,064	1,088
Long-term debt	1,720	1,224
Credit derivative liabilities, at fair value	157	103
Financial guaranty variable interest entities’ liabilities with recourse, at fair value	296	316
Financial guaranty variable interest entities’ liabilities without recourse, at fair value	24	17
Liabilities of consolidated investment vehicles (includes $2,526 and $1,299 measured at fair value)	3,109	1,590
Other liabilities	579	556
Total liabilities	10,653	8,629
Commitments and contingencies (Note 13)
Redeemable noncontrolling interests (see Note 9)	21	21
Common shares ($0.01 par value, 500,000,000 shares authorized; 74,112,554 and 77,546,896 shares issued and outstanding)	1	1
Retained earnings	6,056	6,143
Accumulated other comprehensive income, net of tax of $84 and $89	445	498
Deferred equity compensation	1	1
Total shareholders’ equity attributable to Assured Guaranty Ltd.	6,503	6,643
Nonredeemable noncontrolling interests (see Note 9)	49	41
Total shareholders’ equity	6,552	6,684
Total liabilities, redeemable noncontrolling interests and shareholders’ equity	$ 17,226	$ 15,334