Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 237.2	$ 331.7
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	216.9	213.1
Non-cash restructuring charges	95.7	11.7
Amortization of restricted stock and other non-cash compensation	56.4	58.3
Net losses on sales of businesses	51.8	19.5
Provision for uncollectible receivables	49.8	7.7
Net amortization of bond discounts and deferred financing costs	8.6	7.0
Deferred income tax	(9.4)	(1.5)
Other	20.7	(1.6)
Changes in assets and liabilities, net of acquisitions and divestitures, providing (using) cash:
Accounts receivable	1,759.9	1,010.2
Accounts receivable, billable to clients	(83.0)	152.0
Other current assets	(60.7)	(29.5)
Accounts payable	(2,014.7)	(952.7)
Accrued liabilities	(61.3)	(73.5)
Contract liabilities	34.1	37.2
Other non-current assets and liabilities	(142.9)	(62.0)
Net cash provided by operating activities	325.1	423.6
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(112.0)	(133.8)
Acquisitions, net of cash acquired	(2.5)	(0.6)
Other investing activities	(18.0)	13.7
Net cash used in investing activities	(132.5)	(120.7)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from Issuance of Long-term Debt	646.2	0.0
Net increase in short-term borrowings	1.9	173.1
Exercise of stock options	0.0	4.2
Common stock dividends	(298.6)	(272.2)
Acquisition-related payments	(40.6)	(15.3)
Tax payments for employee shares withheld	(22.2)	(22.3)
Distributions to noncontrolling interests	(13.7)	(12.4)
Repayments of Long-term Debt	(0.5)	(300.2)
Other financing activities	(10.2)	0.1
Net cash provided by (used in) financing activities	262.3	(445.0)
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash	(20.3)	(11.1)
Net increase (decrease) in cash, cash equivalents and restricted cash	434.6	(153.2)
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	$ 1,630.3	$ 524.0