Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities
Net income	$ 2,018	$ 1,573	$ 1,174
Less: Income from discontinued operations, net of income taxes	1	(1)	74
Adjustments to reconcile net income to cash provided by operating activities:
Loss (gain) from sales of businesses and investments, net	(25)	(13)	6
Depreciation of fixed assets	167	172	176
Amortization and impairment of intangible assets	246	392	593
Share-based compensation expense	312	317	338
Deferred income taxes	9	(36)	(225)
Change in assets and liabilities:
Fiduciary receivables	(1,140)	(409)	(679)
Short-term investments — funds held on behalf of clients	(316)	(1,246)	(320)
Fiduciary liabilities	1,456	1,655	999
Receivables, net	108	(371)	(127)
Accounts payable and accrued liabilities	186	(28)	25
Restructuring reserves	(127)	3	23
Current income taxes	(17)	(20)	34
Pension, other postretirement and postemployment liabilities	(141)	(156)	(259)
Other assets and liabilities	48	1	2
Cash provided by operating activities	2,783	1,835	1,686
Cash flows from investing activities
Proceeds from investments	64	61	71
Payments for investments	(97)	(113)	(80)
Net sales (purchases) of short-term investments — non-fiduciary	(167)	35	348
Acquisition of businesses, net of cash acquired	(368)	(39)	(58)
Sale of businesses, net of cash sold	30	52	(10)
Capital expenditures	(141)	(225)	(240)
Cash provided by (used for) investing activities	(679)	(229)	31
Cash flows from financing activities
Share repurchase	(1,763)	(1,960)	(1,470)
Issuance of shares for employee benefit plans	(149)	(131)	(149)
Issuance of debt	4,153	6,052	5,754
Repayment of debt	(3,882)	(4,941)	(5,417)
Cash dividends to shareholders	(412)	(410)	(382)
Noncontrolling interests and other financing activities	(35)	(103)	(35)
Cash used for financing activities	(2,088)	(1,493)	(1,699)
Effect of exchange rates on cash and cash equivalents	78	21	(118)
Net increase (decrease) in cash and cash equivalents	94	134	(100)
Cash and cash equivalents at beginning of year	790	656	756
Cash and cash equivalents at end of year	884	790	656
Supplemental disclosures:
Interest paid	326	289	266
Income taxes paid, net of refunds	$ 455	$ 353	$ 337