Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenue	$ 20,720	$ 19,820	$ 17,224
Expense:
Compensation and benefits	12,071	11,425	10,129
Other operating expenses	4,369	4,083	4,029
Operating expenses	16,440	15,508	14,158
Operating income	4,280	4,312	3,066
Other net benefits credits	235	277	257
Interest income	15	2	7
Interest expense	(469)	(444)	(515)
Investment income (loss)	21	61	(22)
Income before income taxes	4,082	4,208	2,793
Income tax expense	995	1,034	747
Net income before non-controlling interests	3,087	3,174	2,046
Less: Net income attributable to non-controlling interests	37	31	30
Net income attributable to the Company	$ 3,050	$ 3,143	$ 2,016
Net income per share attributable to the Company
Basic (in dollars per share)	$ 6.11	$ 6.20	$ 3.98
Diluted (in dollars per share)	$ 6.04	$ 6.13	$ 3.94
Average number of shares outstanding
Basic (in shares)	499	507	506
Diluted (in shares)	505	513	512
Shares outstanding (in shares)	495	504	508