Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME	$ 119.6	$ 81.3
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization of fixed assets and intangible assets	78.2	80.7
Provision for uncollectible receivables	6.7	5.6
Amortization of restricted stock and other non-cash compensation	33.2	26.2
Net amortization of bond discounts and deferred financing costs	2.8	2.3
Deferred income tax provision	0.2	7.3
Other	11.8	14.9
Changes in assets and liabilities, net of acquisitions and dispositions, providing (using) cash:
Accounts receivable	284.1	327.6
Expenditures billable to clients	(53.2)	(239.4)
Other current assets	(17.7)	(76.7)
Accounts payable	(775.3)	(584.5)
Accrued liabilities	(198.3)	(173.5)
Other non-current assets and liabilities	(28.7)	(29.0)
Net cash used in operating activities	(536.6)	(557.2)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(49.8)	(58.7)
Proceeds from sales of businesses and investments, net of cash sold	(0.5)	10.5
Acquisitions, net of cash acquired	0.0	(50.8)
Other investing activities	0.4	(0.1)
Net cash used in investing activities	(49.9)	(99.1)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of common stock	(102.0)	(97.3)
Common stock dividends	(98.5)	(80.1)
Acquisition-related payments	(27.8)	(8.6)
Distributions to noncontrolling interests	(8.2)	(12.1)
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	4.3
Exercise of stock options	10.6	10.7
Net increase (decrease) in short term bank borrowings	54.9	(52.8)
Other financing activities	2.5	(2.4)
Net cash used in financing activities	(160.5)	(89.3)
Effect of foreign exchange rate changes on cash and cash equivalents	(64.7)	3.9
Net decrease in cash and cash equivalents	(811.7)	(741.7)
Cash and cash equivalents at beginning of period	1,660.6	1,636.8
Cash and cash equivalents at end of period	$ 848.9	$ 895.1