Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME (LOSS)	$ (85.3)	$ 113.6
Adjustments to Reconcile Net Income to Cash Used in Operating Activities
Deferred income tax	(58.7)	6.0
Net amortization of bond discounts and deferred financing costs	0.1	0.3
Provision for uncollectible receivables	1.2	1.7
Amortization of restricted stock and other non-cash compensation	12.2	16.4
Net losses on sales of businesses	36.4	6.8
Depreciation and amortization	61.0	65.2
Non-cash restructuring charges	(109.2)	(0.6)
Other	2.9	8.3
Changes in assets and liabilities, net of acquisitions and divestitures, providing (using) cash:
Accounts receivable	1,073.8	1,369.4
Accounts receivable, billable to clients	45.6	(54.0)
Prepaid Expense	154.8	125.4
Other Current Assets	(4.4)	(38.7)
Accounts payable	(961.4)	(1,532.6)
Accrued liabilities	(84.3)	(174.4)
Contract liabilities	81.8	30.0
Other non-current assets and liabilities	(29.9)	(36.0)
Net cash used in operating activities	(37.0)	(157.4)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions, net of cash acquired	(48.4)	0.0
Capital expenditures	(21.5)	(35.1)
Net Proceeds from Divestiture of Businesses, Net of Cash Divested	(11.4)	16.4
Other investing activities	0.3	1.5
Net cash used in investing activities	(58.2)	(50.0)
CASH FLOWS FROM FINANCING ACTIVITIES:
Common stock dividends	(125.3)	(126.6)
Payments for Repurchase of Common Stock	(90.0)	(62.4)
Tax payments for employee shares withheld	(15.4)	(13.5)
Distributions to noncontrolling interests	(7.4)	(4.3)
Acquisition-related payments	(5.8)	0.0
Net decrease in short-term borrowings	(4.1)	(20.4)
Other financing activities	0.0	0.1
Net cash used in financing activities	(248.0)	(227.1)
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash	23.4	(20.0)
Net decrease in cash, cash equivalents and restricted cash	(319.8)	(454.5)
Cash, cash equivalents, and restricted cash at beginning of period	2,196.4	2,395.1
Cash, cash equivalents, and restricted cash at end of period	$ 1,876.6	$ 1,940.6