Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Investments:
Cash and cash equivalents	$ 83	$ 280
Premiums receivable	249	296
Total assets	7,284	8,107
Liabilities:
Long-term debt	2,228	2,249
Total liabilities	6,445	6,975
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 283,625,689	283	284
Additional paid-in capital	2,999	3,025
Retained earnings	607	966
Accumulated other comprehensive income (loss), net of tax of $8 and $8	(2)	(156)
Treasury stock, at cost—204,000,108 and 193,803,976 shares	(3,061)	(3,000)
Total shareholders' equity of MBIA Inc.	826	1,119
Preferred stock of subsidiary	13	13
Total equity	839	1,132
Total liabilities and equity	7,284	8,107
Non Variable Interest Entity [Member]
Investments:
Fixed-maturity securities held as available-for-sale, at fair value (amortized cost $2,705 and $3,601)	2,820	3,565
Investments carried at fair value	209	222
Investments pledged as collateral, at fair value (amortized cost $15 and $46)	10	43
Short-term investments, at fair value (amortized cost $423 and $241)	423	241
Other investments at amortized cost	0	1
Total investments	3,462	4,072
Cash and cash equivalents	75	222
Premiums receivable	249	296
Deferred acquisition costs	60	74
Insurance loss recoverable	1,694	1,595
Other assets	115	122
Liabilities:
Unearned premium revenue	482	587
Loss and loss adjustment expense reserves	901	965
Long-term debt	2,228	2,249
Medium-term notes (includes financial instruments carried at fair value of $108 and $102)	680	722
Investment agreements	304	311
Derivative liabilities	175	199
Other liabilities	136	198
Variable Interest Entity Primary Beneficiary [Member]
Investments:
Investments carried at fair value	83	157
Other assets	26	31
Cash	8	58
Investments held-to-maturity, at amortized cost (fair value $892 and $925)	890	890
Loans receivable at fair value	136	172
Loan repurchase commitments	486	418
Total assets	1,600	1,700
Liabilities:
Variable interest entity notes (includes financial instruments carried at fair value of $403 and $480)	1,539	1,744
Total liabilities	$ 1,500	$ 1,700