Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Investments:
Cash and cash equivalents	$ 454	$ 83
Total assets	6,613	7,284
Liabilities:
Total liabilities	6,253	6,445
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--283,433,401 and 283,433,401	283	283
Additional paid-in capital	2,958	2,999
Retained earnings	126	607
Accumulated other comprehensive income (loss), net of tax of $8 and $8	129	(2)
Treasury stock, at cost—220,924,081 and 204,000,108 shares	(3,149)	(3,061)
Total shareholders' equity of MBIA Inc.	347	826
Preferred stock of subsidiary	13	13
Total equity	360	839
Total liabilities and equity	6,613	7,284
Non Variable Interest Entity [Member]
Investments:
Fixed-maturity securities held as available-for-sale, at fair value (amortized cost $2,278 and $2,705)	2,473	2,820
Investments carried at fair value	203	209
Investments pledged as collateral, at fair value (amortized cost $6 and $15)	1	10
Short-term investments, at fair value (amortized cost $252 and $423)	252	423
Total investments	2,929	3,462
Cash and cash equivalents	446	75
Premiums receivable (net of allowance for credit losses $4 and $-)	232	249
Deferred acquisition costs	55	60
Insurance loss recoverable	1,543	1,694
Other assets	104	115
Liabilities:
Unearned premium revenue	444	482
Loss and loss adjustment expense reserves	1,018	901
Long-term debt	2,289	2,228
Medium-term notes (includes financial instruments carried at fair value of $96 and $108)	668	680
Investment agreements	289	304
Derivative liabilities	233	175
Other liabilities	134	136
Variable Interest Entity Primary Beneficiary [Member]
Investments:
Investments carried at fair value	76	83
Other assets	28	26
Cash	8	8
Investments held-to-maturity, at amortized cost (net of allowance for credit losses $23 and $-, fair value $574 and $892)	552	890
Loans receivable at fair value	116	136
Loan repurchase commitments	524	486
Total assets	1,300	1,600
Liabilities:
Variable interest entity notes (includes financial instruments carried at fair value of $342 and $403)	1,178	1,539
Total liabilities	$ 1,200	$ 1,500