CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Revenue	$ 6,473	$ 5,924
Expense:
Compensation and benefits	3,470	3,207
Other operating expenses	1,078	991
Operating expenses	4,548	4,198
Operating income	1,925	1,726
Other net benefit credits	67	58
Interest income	37	14
Interest expense	(159)	(136)
Investment income	1	2
Income before income taxes	1,871	1,664
Income tax expense	447	412
Net income before non-controlling interests	1,424	1,252
Less: Net income attributable to non-controlling interests	24	17
Net income attributable to the Company	$ 1,400	$ 1,235
Net income per share attributable to the Company:
Basic (in dollars per share)	$ 2.84	$ 2.50
Diluted (in dollars per share)	$ 2.82	$ 2.47
Average number of shares outstanding:
Basic (in shares)	492	495
Diluted (in shares)	497	500
Shares outstanding (in shares)	493	495