Consolidated Statement of Earnings (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenues:
Property and casualty insurance net earned premiums	$ 2,055	$ 1,855	$ 5,186	$ 4,799
Net investment income	200	168	586	583
Securities	(2)	(19)	10	(67)
Subsidiary	0	(4)	0	(4)
Income of managed investment entities:
Investment income	99	105	296	321
Gain (loss) on change in fair value of assets/liabilities	(9)	16	5	12
Other income	26	43	92	100
Total revenues	2,369	2,164	6,175	5,744
Property and casualty insurance:
Commissions and other underwriting expenses	518	497	1,527	1,455
Interest charges on borrowed money	19	19	57	57
Expenses of managed investment entities	85	105	267	303
Other expenses	88	85	241	227
Total costs and expenses	2,140	1,945	5,371	5,006
Earnings before income taxes	229	219	804	738
Provision for income taxes	48	42	172	149
Net Earnings	$ 181	$ 177	$ 632	$ 589
Earnings per Common Share:
Total basic earnings (USD per share)	$ 2.16	$ 2.10	$ 7.54	$ 6.93
Total diluted earnings (USD per share)	$ 2.16	$ 2.09	$ 7.54	$ 6.93
Average number of Common Shares:
Basic (shares)	83.9	84.6	83.8	85.0
Diluted (shares)	83.9	84.7	83.9	85.1
Property and casualty insurance
Property and casualty insurance:
Losses and loss adjustment expenses	$ 1,430	$ 1,239	$ 3,279	$ 2,964