Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ (41.3)	$ 163.3
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	145.9	144.1
Provision for uncollectible receivables	39.4	6.7
Amortization of restricted stock and other non-cash compensation	35.8	44.1
Net amortization of bond discounts and deferred financing costs	5.3	4.6
Deferred income tax provision	(21.1)	(3.0)
Net losses on sales of businesses	43.2	11.8
Non-cash restructuring charges	67.6	11.7
Other	11.6	(1.0)
Changes in assets and liabilities, net of acquisitions and divestitures, providing (using) cash:
Accounts receivable	1,871.2	743.3
Accounts receivable, billable to clients	(418.9)	75.4
Other current assets	(75.0)	(62.1)
Accounts payable	(2,731.4)	(676.9)
Accrued liabilities	(109.4)	(92.2)
Contract liabilities	(10.8)	50.2
Other non-current assets and liabilities	(14.1)	(70.2)
Net cash (used in) provided by operating activities	(364.2)	199.0
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(71.9)	(80.1)
Acquisitions, net of cash acquired	(2.5)	(0.6)
Other investing activities	(18.9)	2.8
Net cash used in investing activities	(93.3)	(77.9)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from Issuance of Long-term Debt	646.2	0.0
Net increase in short-term borrowings	2.5	132.3
Exercise of stock options	0.0	0.6
Common stock dividends	(199.2)	(181.4)
Acquisition-related payments	(32.3)	(13.0)
Tax payments for employee shares withheld	(21.8)	(22.0)
Distributions to noncontrolling interests	(9.4)	(8.1)
Repayments of Long-term Debt	(0.1)	(100.1)
Other financing activities	(8.2)	0.0
Net cash provided by (used in) financing activities	377.7	(191.7)
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash	(28.9)	10.3
Net decrease in cash, cash equivalents and restricted cash	(108.7)	(60.3)
Cash, cash equivalents, and restricted cash at beginning of period	1,195.7	677.2
Cash, cash equivalents, and restricted cash at end of period	$ 1,087.0	$ 616.9