Consolidated Statement of Earnings - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Property and casualty insurance net earned premiums	$ 5,099	$ 5,185	$ 4,865
Net investment income	2,132	2,303	2,094
Realized gains (losses) on:
Securities	289	287	(266)
Subsidiaries	23	0	0
Income of managed investment entities:
Investment income	201	269	255
Gain (loss) on change in fair value of assets/liabilities	(39)	(30)	(21)
Other income	204	223	223
Total revenues	7,909	8,237	7,150
Costs and Expenses:
Property and casualty insurance: Losses and loss adjustment expenses	3,271	3,271	3,003
Property and casualty insurance: Commissions and other underwriting expenses	1,625	1,725	1,583
Annuity benefits	1,192	1,151	998
Annuity and supplemental insurance acquisition expenses	306	253	261
Interest charges on borrowed money	88	68	62
Expenses of managed investment entities	149	220	211
Other expenses	430	441	393
Total costs and expenses	7,061	7,129	6,511
Earnings before income taxes	848	1,108	639
Provision for income taxes	127	239	122
Net earnings, including noncontrolling interests	721	869	517
Less: Net earnings (loss) attributable to noncontrolling interests	(11)	(28)	(13)
Net Earnings Attributable to Shareholders	$ 732	$ 897	$ 530
Earnings Attributable to Shareholders per Common Share:
Basic (USD per share)	$ 8.25	$ 9.98	$ 5.95
Diluted (USD per share)	$ 8.20	$ 9.85	$ 5.85
Average number of Common Shares:
Basic (shares)	88.7	89.9	89.0
Diluted (shares)	89.2	91.0	90.6