Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Investments:
Premiums receivable (net of allowance for credit losses $- and $5)	$ 160	$ 178
Assets held for sale	80
Total assets	3,375	4,696
Liabilities:
Liabilities held for sale	61
Total liabilities	4,251	4,996
Commitments and contingencies (Refer to Note 19)
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—283,186,115 and 283,186,115	283	283
Additional paid-in capital	2,925	2,931
Retained earnings (deficit)	(653)	(458)
Accumulated other comprehensive income (loss), net of tax of $8 and $8	(283)	100
Treasury stock, at cost--228,333,444 and 228,630,003 shares	(3,154)	(3,169)
Total shareholders' equity of MBIA Inc.	(882)	(313)
Preferred stock of subsidiary and noncontrolling interest held for sale	6	13
Total equity	(876)	(300)
Total liabilities and equity	3,375	4,696
Non Variable Interest Entity [Member]
Investments:
Fixed-maturity securities held as available-for-sale, at fair value (amortized cost $2,044 and $2,016)	1,812	2,157
Investments carried at fair value	511	258
Investments pledged as collateral, at fair value (amortized cost $- and $4)	0	4
Short-term investments, at fair value (amortized cost $353 and $374)	353	374
Total investments	2,676	2,793
Cash and cash equivalents	50	151
Premiums receivable (net of allowance for credit losses $- and $5)	160	178
Deferred acquisition costs	35	42
Insurance loss recoverable	137	1,296
Assets held for sale	80	0
Other assets	73	67
Liabilities:
Unearned premium revenue	266	322
Loss and loss adjustment expense reserves	439	894
Long-term debt	2,428	2,331
Medium-term notes (includes financial instruments carried at fair value of $41 and $98)	501	590
Investment agreements	233	274
Derivative liabilities	49	131
Liabilities held for sale	61	0
Other liabilities	94	163
Variable Interest Entity Primary Beneficiary [Member]
Investments:
Investments carried at fair value	47	60
Other assets	23	23
Cash	16	9
Loans receivable at fair value	78	77
Liabilities:
Derivative liabilities	6	0
Variable interest entity debt (includes financial instruments carried at fair value of $172 and $291)	$ 174	$ 291