Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME	$ 197.6	$ 174.1
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization of fixed assets and intangible assets	116.3	121.7
Provision for uncollectible receivables	12.2	9.0
Amortization of restricted stock and other non-cash compensation	49.7	37.9
Net amortization of bond discounts and deferred financing costs	4.2	3.7
Deferred income tax (benefit) provision	(33.7)	49.1
Losses (gains) on sales of businesses	38.1	(0.5)
Other	13.0	17.1
Changes in assets and liabilities, net of acquisitions and dispositions, providing (using) cash:
Accounts receivable	308.0	623.0
Expenditures billable to clients	(235.1)	(193.2)
Other current assets	(12.1)	(65.0)
Accounts payable	(556.1)	(1,015.7)
Accrued liabilities	(110.3)	(107.2)
Other non-current assets and liabilities	(47.5)	(35.0)
Net cash used in operating activities	(255.7)	(381.0)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(80.7)	(94.4)
Acquisitions, net of cash acquired	(5.9)	(62.9)
Proceeds from sales of businesses, investments and fixed assets, net of cash sold	(3.8)	15.9
Net purchases and maturities of short-term marketable securities	(0.1)	(0.5)
Net cash used in investing activities	(90.5)	(141.9)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of common stock	(172.3)	(148.1)
Common stock dividends	(147.2)	(119.9)
Acquisition-related payments	(31.8)	(12.7)
Distributions to noncontrolling interests	(13.1)	(13.9)
Repayments of long-term debt	(1.0)	(350.1)
Proceeds from issuance of long-term debt	0.0	499.1
Excess tax benefit on share-based compensation	9.0	4.9
Exercise of stock options	11.8	11.9
Net increase (decrease) in short term bank borrowings	29.4	(44.4)
Other financing activities	3.6	(1.6)
Net cash used in financing activities	(311.6)	(174.8)
Effect of foreign exchange rate changes on cash and cash equivalents	(128.5)	(43.1)
Net decrease in cash and cash equivalents	(786.3)	(740.8)
Cash and cash equivalents at beginning of period	1,660.6	1,636.8
Cash and cash equivalents at end of period	$ 874.3	$ 896.0