CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from revolving credit facilities	$ 133.2	$ 229.7
Noncontrolling interest distributions	(0.2)	(5.6)
Repayments of Long-term Capital Lease Obligations	(3.0)	(2.8)
Payments Related to Tax Withholding for Share-based Compensation	(19.4)	(25.0)
Net proceeds from issuance of stock to employees	24.7	28.4
Payments for Repurchase of Common Stock	(100.1)	(75.0)
Payments On Zero Coupon Subordinated Notes	(5.2)	0.0
Repayments of Lines of Credit	(133.2)	(214.7)
Net cash provided by (used for) financing activities	(103.2)	(65.0)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Disposal Group, Including Discontinued Operations		361.8
Net earnings	185.9	172.5
Earnings before income taxes	254.7	241.5
Depreciation And Amortization Of Leased Assets	61.2	0.0
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	137.3	142.8
Stock compensation	25.5	25.8
Loss on sale of assets	6.0	1.7
Cumulative earnings in excess of distributions from equity method investments	(0.8)	(0.5)
Asset Impairment Charges	0.0	2.3
Deferred income taxes	17.1	36.0
Change in assets and liabilities (net of effects of acquisitions):
Increase in accounts receivable (net)	(90.8)	(53.6)
Increase (Decrease) in Unbilled Receivables	(26.4)	(22.8)
Increase in inventories	3.4	1.4
Decrease in prepaid expenses and other	7.2	(33.8)
Decrease in accounts payable	(28.8)	(59.8)
Increase (Decrease) in Deferred Revenue	5.6	26.2
Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities	(136.6)	(58.5)
Net cash provided by operating activities	165.8	179.7
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(94.2)	(72.5)
Proceeds from sale of assets	3.9	0.1
Proceeds from Sale of Equity Method Investments	0.4	0.0
Investments in equity affiliates	(3.3)	(1.9)
Acquisition of businesses, net of cash acquired	(47.3)	0.0
Net cash used for investing activities	(140.5)	(74.3)
Effect of exchange rate changes on cash and cash equivalents	(0.1)	4.7
Net increase (decrease) in cash and cash equivalents	(78.0)	$ 45.1
Cash and cash equivalents at beginning of period	426.8
Cash and cash equivalents at end of period	$ 348.8