Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Investments
Fixed maturities, at fair value (amortized cost: 2016—$9,442; 2015—$9,324)	$ 9,884	$ 9,650
Equity securities, at fair value (cost: 2016—$2,999; 2015—$2,938)	4,941	4,706
Other invested assets	64	67
Total investments	14,889	14,423
Cash and cash equivalents	613	544
Investment income receivable	121	129
Finance receivable	60	62
Premiums receivable	1,468	1,431
Reinsurance recoverable	532	542
Prepaid reinsurance premiums	50	54
Deferred policy acquisition costs	618	616
Land, building and equipment, net, for company use (accumulated depreciation: 2016—$465; 2015—$459)	188	185
Other assets	135	154
Separate accounts	773	748
Total assets	19,447	18,888
Insurance reserves
Loss and loss expense reserves	4,804	4,718
Life policy and investment contract reserves	2,601	2,583
Unearned premiums	2,248	2,201
Other liabilities	675	717
Deferred income tax	751	638
Note payable	35	35
Long-term debt and capital lease obligations	825	821
Separate accounts	773	748
Total liabilities	12,712	12,461
Commitments and contingent liabilities (Note 12)	0	0
Shareholders' Equity
Common stock, par value—$2 per share; (authorized: 2016 and 2015—500 million shares; issued: 2016 and 2015—198.3 million shares)	397	397
Paid-in capital	1,230	1,232
Retained earnings	4,871	4,762
Accumulated other comprehensive income	1,531	1,344
Treasury stock at cost (2016— 33.9 million shares and 2015—34.4 million shares)	(1,294)	(1,308)
Total shareholders' equity	6,735	6,427
Total liabilities and shareholders' equity	$ 19,447	$ 18,888