Condensed Consolidated Statements of Cash Flows (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 522	$ 344
Adjustments to reconcile net income to cash provided by operating activities:
(Gain) loss from sales of businesses, net	(4)	33
Depreciation of fixed assets	111	62
Amortization of intangible assets	182	56
Stock compensation expense	121	123
Deferred income taxes	17	(16)
Change in assets and liabilities:
Change in funds held on behalf of clients	742	633
Receivables, net	(18)	2
Accounts payable and accrued liabilities	(303)	(343)
Restructuring reserves	(54)	(18)
Current income taxes	122	46
Pension and other post employment liabilities	(146)	(41)
Other assets and liabilities	(131)	2
CASH PROVIDED BY OPERATING ACTIVITIES	1,161	883
CASH FLOWS FROM INVESTING ACTIVITIES
Sales of long-term investments	96	77
Purchases of long-term investments	(20)	(15)
Net sales (purchases) of short-term investments - non-fiduciary	290	(79)
Net purchases of short-term investments - funds held on behalf of clients	(742)	(633)
Acquisition of businesses, net of cash acquired	(87)	(55)
Capital expenditures	(99)	(71)
CASH USED FOR INVESTING ACTIVITIES	(562)	(776)
CASH FLOWS FROM FINANCING ACTIVITIES
Purchase of treasury stock	(653)	(100)
Issuance of stock for employee benefit plans	162	81
Issuance of debt	1,469	75
Repayment of debt	(1,504)	(77)
Cash dividends to stockholders	(100)	(82)
Dividends paid to noncontrolling interests	(6)	(11)
CASH USED FOR FINANCING ACTIVITIES	(632)	(114)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	(13)	50
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(46)	43
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	346	217
CASH AND CASH EQUIVALENTS AT END OF PERIOD	300	260
Supplemental disclosures:
Interest paid	150	50
Income taxes paid, net of refunds	$ 14	$ 63