Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 392.7	$ 360.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	134.9	139.3
Amortization of restricted stock and other non-cash compensation	25.3	42.2
Net losses on sales of businesses	7.1	14.2
Net amortization of bond discounts and deferred financing costs	1.4	3.8
Loss on Extinguishment of Debt	0.0	74.0
Deferred income tax	(0.1)	46.6
Provision for uncollectible receivables	(6.0)	(3.2)
Other	19.3	5.9
Changes in assets and liabilities, net of acquisitions and divestitures, providing (using) cash:
Accounts receivable	970.4	714.9
Accounts receivable, billable to clients	(35.4)	235.2
Other current assets	(112.9)	(97.1)
Accounts payable	(1,838.2)	(615.4)
Accrued liabilities	(302.3)	(184.5)
Contract liabilities	0.1	22.0
Other non-current assets and liabilities	(51.5)	(69.3)
Net cash (used in) provided by operating activities	(724.4)	218.4
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(72.3)	(62.1)
Deconsolidation of a subsidiary	20.4	0.0
Net proceeds from investments	(2.6)	(28.8)
Other investing activities	0.3	(9.8)
Net cash used in investing activities	(89.8)	(43.1)
CASH FLOWS FROM FINANCING ACTIVITIES:
Common stock dividends	(232.1)	(215.2)
Repurchases of Common Stock	(147.9)	0.0
Tax payments for employee shares withheld	(39.6)	(24.0)
Net (decrease) increase in short-term borrowings	(12.1)	15.8
Acquisition-related payments	(6.0)	(12.3)
Distributions to noncontrolling interests	(5.2)	(6.9)
Proceeds from Issuance of Long-term Debt	0.0	998.1
Exercise of stock options	0.0	8.0
Early Extinguishment of long-term debt	0.0	1,066.8
Other financing activities	(0.2)	(11.2)
Net cash used in financing activities	(443.1)	(314.5)
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash	(28.8)	(27.9)
Net decrease in cash, cash equivalents and restricted cash	(1,286.1)	(167.1)
Cash, cash equivalents, and restricted cash at beginning of period	3,272.2	2,511.5
Cash, cash equivalents, and restricted cash at end of period	$ 1,986.1	$ 2,344.4