Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
NET LOSS	$ (22.4)	$ (58.5)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization of fixed assets and intangible assets	40.5	38.2
Provision for uncollectible receivables	3.8	3.8
Amortization of restricted stock and other non-cash compensation	15.1	15.5
Net amortization of bond discounts and deferred financing costs	1.0	1.4
Deferred income tax benefit	(22.9)	(49.5)
Other	4.0	(0.4)
Changes in assets and liabilities, net of acquisitions and dispositions, providing (using) cash:
Accounts receivable	557.6	567.4
Expenditures billable to clients	(154.0)	(206.2)
Other current assets	(47.7)	(53.2)
Accounts payable	(905.6)	(898.2)
Accrued liabilities	(173.3)	(131.8)
Other non-current assets and liabilities	(21.8)	(3.6)
Net cash used in operating activities	(725.7)	(775.1)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(26.6)	(17.8)
Acquisitions, including deferred payments, net of cash acquired	(22.1)	(34.9)
Net sales and maturities of short-term marketable securities	0	11.1
Other investing activities	1.6	1.8
Net cash used in investing activities	(47.1)	(39.8)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of common stock	(44.9)	(75.8)
Common stock dividends	(40.2)	(31.0)
Net decrease in short term bank borrowings	(6.7)	(11.4)
Distributions to noncontrolling interests	(5.7)	(1.2)
Acquisition-related payments	(3.3)	(0.7)
Preferred stock dividends	0	(2.9)
Excess tax benefit on share-based compensation	3.3	0
Exercise of stock options	6.2	18.1
Other financing activities	0.6	0.8
Net cash used in financing activities	(90.7)	(104.1)
Effect of foreign exchange rate changes on cash and cash equivalents	(2.3)	(10.1)
Net decrease in cash and cash equivalents	(865.8)	(929.1)
Cash and cash equivalents at beginning of period	1,636.8	2,574.8
Cash and cash equivalents at end of period	$ 771.0	$ 1,645.7