Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
NET INCOME		$ 206	$ 125
Adjustments to reconcile net income to total net cash from operating activities:
Depreciation		60	66
Amortization		71	85
Impairment		0	81
Non-cash restructuring charges		2	0
Non-cash lease expense		27	33
Net periodic benefit of defined benefit pension plans		(8)	(40)
Provision for doubtful receivables from clients		7	5
Benefit from deferred income taxes		(15)	(17)
Share-based compensation		26	22
Net loss on disposal of operations		0	56
Non-cash foreign exchange loss/(gain)		11	(5)
Other, net		10	(5)
Changes in operating assets and liabilities, net of effects from purchase of subsidiaries:
Accounts receivable		129	82
Other assets		11	(22)
Other liabilities		(411)	(458)
Provisions		8	13
Net cash from operating activities		134	21
CASH FLOWS (USED IN)/FROM INVESTING ACTIVITIES
Additions to fixed assets and software for internal use		(42)	(31)
Capitalized software costs		(19)	(15)
Acquisitions of operations, net of cash acquired		(4)	(68)
Cash and fiduciary funds transferred in sale of operations		0	(12)
Sale of investments		4	200
Net cash (used in)/from investing activities		(61)	74
CASH FLOWS USED IN FINANCING ACTIVITIES
Repayments of debt		(1)	(1)
Repurchase of shares		(104)	(2,250)
Proceeds from issuance of shares		0	1
Net payments from fiduciary funds held for clients		(250)	(211)
Payments of deferred and contingent consideration related to acquisitions		(6)	(20)
Cash paid for employee taxes on withholding shares		(5)	(1)
Dividends paid		(87)	(98)
Net cash used in financing activities		(453)	(2,580)
DECREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	[1]	(380)	(2,485)
Effect of exchange rate changes on cash, cash equivalents and restricted cash		21	(34)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD	[1]	4,721	7,691
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	[1]	$ 4,362	$ 5,172

[1] The amounts of cash, cash equivalents and restricted cash, their respective classification on the condensed consolidated balance sheets as well as their respective portions of the increase or decrease in cash, cash equivalents and restricted cash for each of the periods presented have been included in Note 19 — Supplemental Disclosures of Cash Flow Information.