CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating cash flows:
Net income before non-controlling interests	$ 4,117	$ 3,802	$ 3,087
Adjustments to reconcile net income provided by operations:
Depreciation and amortization of fixed assets and capitalized software	369	370	381
Amortization of intangible assets	377	343	338
Non-cash lease expense	280	288	404
Adjustments and payments related to contingent consideration assets and liabilities	(77)	(11)	11
Deconsolidation of Russian businesses	0	0	39
Gain on consolidation of entity	0	0	(2)
Net (gain) on investments	(9)	(5)	(21)
Net (gain) loss on disposition of assets	(48)	16	(127)
Share-based compensation expense	368	363	367
Changes in assets and liabilities:
Net receivables	(467)	(467)	(492)
Other assets	(217)	(154)	(122)
Accrued compensation and employee benefits	92	195	171
Provision for taxes, net of payments and refunds	123	105	(54)
Contributions to pension and other benefit plans in excess of current year credit	(352)	(335)	(385)
Other liabilities	55	64	193
Operating lease liabilities	(309)	(316)	(323)
Net cash provided by operations	4,302	4,258	3,465
Financing cash flows:
Purchase of treasury shares	(900)	(1,150)	(1,950)
Issuance of commercial paper with maturity greater than 90 days	0	146	0
Repayment of commercial paper with maturity greater than 90 days	0	(146)	0
Proceeds from issuance of debt	8,170	2,169	984
Repayments of debt	(1,617)	(266)	(365)
Payment of bridge loan commitment fees	(23)	0	0
Purchase of non-controlling interests	(7)	(139)	(7)
Shares withheld for taxes on vested units – treasury shares	(180)	(148)	(198)
Issuance of common stock from treasury shares	264	199	126
Payments of deferred and contingent consideration for acquisitions	(113)	(202)	(158)
Receipts of deferred and contingent consideration for dispositions	3	2	3
Distributions of non-controlling interests	(40)	(31)	(27)
Dividends paid	(1,513)	(1,298)	(1,138)
Change in fiduciary liabilities	411	(255)	1,684
Net cash provided by (used for) financing activities	4,455	(1,119)	(1,046)
Investing cash flows:
Capital expenditures	(316)	(416)	(470)
Purchases of long-term investments	(108)	(57)	(22)
Sales of long-term investments	55	38	86
Dispositions	89	(17)	119
Acquisitions, net of cash and cash held in a fiduciary capacity acquired	(8,542)	(976)	(572)
Other, net	1	11	9
Net cash used for investing activities	(8,821)	(1,417)	(850)
Effect of exchange rate changes on cash, cash equivalents, and cash and cash equivalents held in a fiduciary capacity	(414)	328	(841)
Decrease in cash, cash equivalents, and cash and cash equivalents held in a fiduciary capacity	(478)	2,050	728
Cash, cash equivalents, and cash and cash equivalents held in a fiduciary capacity at beginning of year	14,152	12,102	11,374
Cash, cash equivalents, and cash and cash equivalents held in a fiduciary capacity at end of year	13,674	14,152	12,102
Cash and cash equivalents	2,398	3,358	1,442
Cash and cash equivalents held in a fiduciary capacity	11,276	10,794	10,660
Total cash, cash equivalents, and cash and cash equivalents held in a fiduciary capacity	$ 13,674	$ 14,152	$ 12,102