Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 163	$ 280
Total assets	8,778	8,076
Liabilities:
Total liabilities	7,577	6,944
Commitments and contingencies (Refer to Note 13)
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 283,625,689	284	284
Additional paid-in capital	2,996	3,025
Retained earnings	949	966
Accumulated other comprehensive income (loss), net of tax of $4 and $8	(74)	(156)
Treasury stock, at cost-- 193,446,168 and 192,803,976 shares	(2,967)	(3,000)
Total shareholders' equity of MBIA Inc.	1,188	1,119
Preferred stock of subsidiary	13	13
Total equity	1,201	1,132
Total liabilities and equity	8,778	8,076
Non Variable Interest Entity [Member]
Assets
Fixed-maturity securities held as available-for-sale, at fair value (amortized cost $3,415 and $3,601)	3,458	3,565
Investments carried at fair value	231	222
Investments pledged as collateral, at fair value (amortized cost $7 and $46)	3	43
Short-term investments held as available-for-sale, at fair value (amortized cost $407 and $241)	407	241
Other investments at amortized cost	1	1
Total investments	4,100	4,072
Cash and cash equivalents	132	222
Premiums receivable	293	296
Deferred acquisition costs	69	74
Insurance loss recoverable	1,583	1,564
Other assets	161	122
Liabilities:
Unearned premium revenue	544	587
Loss and loss adjustment expense reserves	806	934
Long-term debt	2,284	2,249
Medium-term notes (includes financial instruments carried at fair value of $106 and $102)	721	722
Investment agreements	313	311
Derivative liabilities	199	199
Other liabilities	152	198
Variable Interest Entity Primary Beneficiary [Member]
Assets
Investments carried at fair value	861	157
Other assets	32	31
Cash	31	58
Investments held-to-maturity, at amortized cost (fair value $948 and $925)	890	890
Loans receivable at fair value	206	172
Loan repurchase commitments	420	418
Liabilities:
Variable interest entity notes (includes financial instruments carried at fair value of $1,325 and $480)	$ 2,558	$ 1,744