Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Investments
Fixed maturities, at fair value (amortized cost: 2014—$8,871; 2013—$8,638)	$ 9,460	$ 9,121
Equity securities, at fair value (cost: 2014—$2,728; 2013—$2,523)	4,858	4,375
Other invested assets	68	68
Total investments	14,386	13,564
Cash and cash equivalents	591	433
Investment income receivable	123	121
Finance receivable	75	85
Premiums receivable	1,405	1,346
Reinsurance recoverable	545	547
Prepaid reinsurance premiums	29	26
Deferred policy acquisition costs	578	565
Land, building and equipment, net, for company use (accumulated depreciation: 2014—$446; 2013—$420)	194	210
Other assets	75	73
Separate accounts	752	692
Total assets	18,753	17,662
Insurance reserves
Loss and loss expense reserves	4,485	4,311
Life policy and investment contract reserves	2,497	2,390
Unearned premiums	2,082	1,976
Other liabilities	648	611
Deferred income tax	840	673
Note payable	49	104
Long-term debt and capital lease obligations	827	835
Separate accounts	752	692
Total liabilities	12,180	11,592
Commitments and contingent liabilities (Note 16)	0	0
Shareholders' Equity
Common stock, par value—$2 per share; (authorized: 2014 and 2013—500 million shares; issued: 2014 and 2013—198.3 million shares)	397	397
Paid-in capital	1,214	1,191
Retained earnings	4,505	4,268
Accumulated other comprehensive income	1,744	1,504
Treasury stock at cost (2014—34.6 million shares and 2013—35.2 million shares)	1,287	1,290
Total shareholders' equity	6,573	6,070
Total liabilities and shareholders' equity	$ 18,753	$ 17,662