Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Investments
Fixed maturities, at fair value (amortized cost: 2024—$14,709; 2023—$14,361)	$ 14,084	$ 13,791
Equity securities, at fair value (cost: 2024—$4,313; 2023—$4,282)	11,557	10,989
Other invested assets	608	577
Total investments	26,249	25,357
Cash and cash equivalents	619	907
Investment income receivable	202	192
Finance receivable	106	108
Premiums receivable	2,805	2,592
Reinsurance recoverable	617	651
Prepaid reinsurance premiums	77	55
Deferred policy acquisition costs	1,143	1,093
Land, building and equipment, net, for company use (accumulated depreciation: 2024—$331; 2023—$337)	211	208
Other assets	771	681
Separate accounts	927	925
Total assets	33,727	32,769
Insurance reserves
Reserve for loss and loss expenses	9,246	9,050
Life policy and investment contract reserves	3,013	3,068
Unearned premiums	4,398	4,119
Other liabilities	1,156	1,311
Deferred income tax	1,460	1,324
Note payable	25	25
Long-term debt and lease obligations	848	849
Separate accounts	927	925
Total liabilities	21,073	20,671
Commitments and contingent liabilities (Note 12)
Shareholders' Equity
Common stock, par value—$2 per share; (authorized: 2024 and 2023—500 million shares; issued: 2024 and 2023—198.3 million shares)	397	397
Paid-in capital	1,446	1,437
Retained earnings	13,712	13,084
Accumulated other comprehensive loss	(442)	(435)
Treasury stock at cost (2024—41.8 million shares and 2023—41.3 million shares)	(2,459)	(2,385)
Total shareholders' equity	12,654	12,098
Total liabilities and shareholders' equity	$ 33,727	$ 32,769