Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Investments
Fixed maturities, at fair value (amortized cost: 2017—$10,106; 2016—$9,799)	$ 10,502	$ 10,085
Equity securities, at fair value (cost: 2017—$3,218; 2016—$2,995)	5,799	5,334
Other invested assets	93	81
Total investments	16,394	15,500
Cash and cash equivalents	606	777
Investment income receivable	130	134
Finance receivable	54	51
Premiums receivable	1,651	1,533
Reinsurance recoverable	532	545
Prepaid reinsurance premiums	48	62
Deferred policy acquisition costs	678	637
Land, building and equipment, net, for company use (accumulated depreciation: 2017—$245; 2016—$237)	184	183
Other assets	171	198
Separate accounts	790	766
Total assets	21,238	20,386
Insurance reserves
Loss and loss expense reserves	5,281	5,085
Life policy and investment contract reserves	2,702	2,671
Unearned premiums	2,461	2,307
Other liabilities	767	786
Deferred income tax	1,021	865
Note payable	17	20
Long-term debt and capital lease obligations	826	826
Separate accounts	790	766
Total liabilities	13,865	13,326
Commitments and contingent liabilities (Note 12)
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	1,249	1,252
Retained earnings	5,174	5,037
Accumulated other comprehensive income	1,925	1,693
Treasury stock at cost (2017—34.4 million shares and 2016—33.9 million shares)	(1,372)	(1,319)
Total shareholders' equity	7,373	7,060
Total liabilities and shareholders' equity	$ 21,238	$ 20,386