Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Assets
Cash and cash equivalents	$ 179	$ 146
Total assets	8,361	9,095
Liabilities:
Total liabilities	7,241	7,670
Commitments and contingencies (Refer to Note 20)
Equity:
Preferred stock, par value $1 per share; authorized shares--10,000,000; issued and outstanding--none	0	0
Common stock, par value $1 per share; authorized shares--400,000,000; issued shares-- 283,625,689 and 283,717,973	284	284
Additional paid-in capital	3,155	3,171
Retained earnings	973	1,095
Accumulated other comprehensive income (loss), net of tax of $7 and $16	(206)	(19)
Treasury stock, at cost-- 192,936,029 and 192,233,526 shares	(3,098)	(3,118)
Total shareholders' equity of MBIA Inc.	1,108	1,413
Preferred stock of subsidiary	12	12
Total equity	1,120	1,425
Total liabilities and equity	8,361	9,095
Non Variable Interest Entity [Member]
Assets
Fixed-maturity securities held as available-for-sale, at fair value (amortized cost $3,562 and $3,728)	3,533	3,712
Investments carried at fair value	231	200
Investments pledged as collateral, at fair value (amortized cost $32 and $147)	30	148
Short-term investments held as available-for-sale, at fair value (amortized cost $411 and $589)	411	589
Other investments (includes investments at fair value of $0 and $4)	1	6
Total investments	4,206	4,655
Cash and cash equivalents	167	122
Premiums receivable	306	369
Deferred acquisition costs	78	95
Insurance loss recoverable	1,542	511
Assets held for sale	0	0
Deferred income taxes, net	0	0
Other assets	125	128
Liabilities:
Unearned premium revenue	609	752
Loss and loss adjustment expense reserves	1,033	979
Long-term debt	2,218	2,121
Medium-term notes (includes financial instruments carried at fair value of $123 and $115)	738	765
Investment agreements	314	337
Derivative liabilities	173	262
Liabilities held for sale	0	0
Other liabilities	196	165
Variable Interest Entity Primary Beneficiary [Member]
Assets
Investments carried at fair value	163	182
Other assets	29	33
Cash	12	24
Investments held-to-maturity, at amortized cost (fair value $901 and $916)	890	890
Loans receivable at fair value	428	1,679
Loan repurchase commitments	415	407
Liabilities:
Variable interest entity notes (includes financial instruments carried at fair value of $709 and $1,069)	$ 1,960	$ 2,289