Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Assets
Fixed maturity securities at fair value (amortized cost of $37,345 and $36,427)	$ 39,937	$ 37,577
Equity securities at fair value (cost of $288 and $422)	304	440
Limited partnership investments	2,245	2,309
Other invested assets	12	27
Mortgage loans	234	87
Short term investments	1,641	2,215
Total investments	44,373	42,655
Cash	75	77
Reinsurance receivables (less allowance for uncollectible receivables of $91 and $125)	6,001	7,079
Insurance receivables (less allowance for uncollectible receivables of $112 and $160)	1,614	1,557
Accrued investment income	436	425
Deferred acquisition costs	658	1,079
Deferred income taxes	378	667
Property and equipment at cost (less accumulated depreciation of $420 and $543)	309	333
Goodwill and other intangible assets	139	141
Other assets (includes $130 and $139 due from Loews Corporation)	779	868
Separate account business	417	450
Total assets	55,179	55,331
Liabilities and Equity
Claim and claim adjustment expenses	24,303	25,496
Unearned premiums	3,250	3,203
Future policy benefits	9,810	8,718
Policyholders’ funds	191	173
Participating policyholders’ funds	68	60
Short term debt	83	400
Long term debt	2,525	2,251
Other liabilities	2,975	3,056
Separate account business	417	450
Total liabilities	43,622	43,807
Commitments and contingencies (Notes B, G and K)
Equity:
Common stock ($2.50 par value; 500,000,000 shares authorized; 273,040,243 shares issued; 269,274,900 and 269,139,198 shares outstanding)	683	683
Additional paid-in capital	2,146	2,200
Retained earnings	8,382	7,876
Accumulated other comprehensive income (loss)	470	326
Treasury stock (3,765,343 and 3,901,045 shares), at cost	(102)	(105)
Notes receivable for the issuance of common stock	(22)	(26)
Total CNA stockholders’ equity	11,557	10,954
Noncontrolling interests		570
Total equity	11,557	11,524
Total liabilities and equity	$ 55,179	$ 55,331