Consolidated Statements of Cash Flows (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 273.2	$ 58.4
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization of fixed assets and intangible assets	109.5	111.5
Provision for uncollectible receivables	7.7	8.6
Amortization of restricted stock and other non-cash compensation	42.1	38.5
Net amortization of bond premiums and deferred financing costs	(6.3)	(3.0)
Deferred income tax provision (benefit)	24.7	(7.5)
Gain on sale of an investment	(132.2)	0
Other	15.9	26.1
Changes in assets and liabilities, net of acquisitions and dispositions, providing (using) cash:
Accounts receivable	565.8	(82.7)
Expenditures billable to clients	(315.2)	(225.8)
Other current assets	(36.9)	(14.9)
Accounts payable	(817.4)	51.2
Accrued liabilities	(99.2)	(104.1)
Other non-current assets and liabilities	(75.6)	(18.1)
Net cash used in operating activities	(443.9)	(161.8)
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of an investment	133.5	0
Acquisitions, including deferred payments, net of cash acquired	(50.3)	(63.0)
Capital expenditures	(83.3)	(49.7)
Other investing activities	9.2	29.1
Net cash provided by (used in) investing activities	9.1	(83.6)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of common stock	(269.0)	0
Common stock dividends	(84.4)	0
Exercise of stock options	11.9	1.0
Repurchase of preferred stock	0	(265.9)
Purchase of long-term debt	(38.3)	(24.2)
Issuance costs and fees	0	(9.8)
Net increase in short term bank borrowings	48.0	25.9
Acquisition-related payments	(70.4)	(25.8)
Distributions to noncontrolling interests	(17.4)	(18.2)
Preferred stock dividends	(8.7)	(16.7)
Other financing activities	5.6	6.0
Net cash used in financing activities	(422.7)	(327.7)
Effect of foreign exchange rate changes on cash and cash equivalents	(33.2)	5.6
Net decrease in cash and cash equivalents	(890.7)	(567.5)
Cash and cash equivalents at beginning of period	2,675.7	2,495.2
Cash and cash equivalents at end of period	$ 1,785.0	$ 1,927.7