Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Investments
Fixed maturities, at fair value (amortized cost: 2017—$10,314; 2016—$9,799)	$ 10,699	$ 10,085
Equity securities, at fair value (cost: 2017—$3,094; 2016—$2,995)	6,249	5,334
Other invested assets	103	81
Total investments	17,051	15,500
Cash and cash equivalents	657	777
Investment income receivable	134	134
Finance receivable	61	51
Premiums receivable	1,589	1,533
Reinsurance recoverable	432	545
Prepaid reinsurance premiums	42	62
Deferred policy acquisition costs	670	637
Land, building and equipment, net, for company use (accumulated depreciation: 2017—$253; 2016—$237)	185	183
Other assets	216	198
Separate accounts	806	766
Total assets	21,843	20,386
Insurance reserves
Loss and loss expense reserves	5,273	5,085
Life policy and investment contract reserves	2,729	2,671
Unearned premiums	2,404	2,307
Other liabilities	792	786
Deferred income tax	745	865
Note payable	24	20
Long-term debt and capital lease obligations	827	826
Separate accounts	806	766
Total liabilities	13,600	13,326
Commitments and contingent liabilities (Note 16)	0	0
Shareholders' Equity
Common stock, par value—$2 per share; (authorized: 2017 and 2016—500 million shares; issued: 2017 and 2016—198.3 million shares)	397	397
Paid-in capital	1,265	1,252
Retained earnings	5,180	5,037
Accumulated other comprehensive income	2,788	1,693
Treasury stock at cost (2017—34.4 million shares and 2016—33.9 million shares)	(1,387)	(1,319)
Total shareholders' equity	8,243	7,060
Total liabilities and shareholders' equity	$ 21,843	$ 20,386