Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating cash flows:
Net income before non-controlling interests	$ 3,087	$ 3,174	$ 2,046
Adjustments to reconcile net income to cash provided by operations:
Depreciation and amortization of fixed assets and capitalized software	381	382	390
Amortization of intangible assets	338	365	351
Non-cash lease expense	404	327	355
Adjustments and payments related to contingent consideration assets and liabilities	11	27	(22)
Deconsolidation of Russian businesses	39	0	0
Gain on consolidation of entity	(2)	(267)	0
Net (gain) loss on investments	(21)	(61)	22
Net (gain) loss on disposition of assets	(127)	(33)	24
Share-based compensation expense	367	348	290
Changes in assets and liabilities:
Net receivables	(492)	(570)	412
Other assets	(122)	(354)	255
Accrued compensation and employee benefits	171	574	171
Provision for taxes, net of payments and refunds	(54)	(33)	63
Contributions to pension and other benefit plans in excess of current year credit	(385)	(372)	(356)
Other liabilities	193	358	(268)
Operating lease liabilities	(323)	(349)	(351)
Net cash provided by operations	3,465	3,516	3,382
Financing cash flows:
Purchase of treasury shares	(1,950)	(1,159)	0
Borrowings from term-loan and credit facilities	0	0	1,000
Proceeds from issuance of debt	984	743	737
Repayments of debt	(365)	(1,016)	(2,515)
Net purchase of non-controlling interests	(7)	0	(3)
Shares withheld for taxes on vested units – treasury shares	(198)	(101)	(132)
Issuance of common stock from treasury shares	126	161	132
Payments of deferred and contingent consideration for acquisitions	(158)	(117)	(122)
Receipts of contingent consideration for dispositions	3	71	0
Distributions of non-controlling interests	(27)	(36)	(34)
Dividends paid	(1,138)	(1,026)	(943)
Change in fiduciary liabilities	1,684	1,183	955
Net cash used for financing activities	(1,046)	(1,297)	(925)
Investing cash flows:
Capital expenditures	(470)	(406)	(348)
Purchases of long term investments	(22)	(28)	(23)
Sales of long term investments	86	41	130
Dispositions	119	84	98
Acquisitions, net of cash and cash held in a fiduciary capacity acquired	(572)	(859)	(647)
Other, net	9	4	(3)
Net cash used for investing activities	(850)	(1,164)	(793)
Effect of exchange rate changes on cash, cash equivalents, and cash and cash equivalents held in a fiduciary capacity	(841)	(355)	511
Increase in cash, cash equivalents, and cash and cash equivalents held in a fiduciary capacity	728	700	2,175
Cash, cash equivalents, and cash and cash equivalents held in a fiduciary capacity at beginning of year	11,374	10,674	8,499
Cash, cash equivalents, and cash and cash equivalents held in a fiduciary capacity at end of year	12,102	11,374	10,674
Cash and cash equivalents	1,442	1,752	2,089
Cash and cash equivalents held in a fiduciary capacity	10,660	9,622	8,585
Total cash, cash equivalents, and cash and cash equivalents held in a fiduciary capacity	$ 12,102	$ 11,374	$ 10,674