CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 618,400,000	$ 597,600,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Contingent consideration adjustment	2,100,000
Depreciation And Amortization Of Leased Assets	150,700,000	144,100,000
Depreciation and amortization	440,800,000	421,400,000
Stock compensation	84,900,000	83,500,000
Asset Impairment Charges	460,900,000	0
Deferred income taxes	(48,500,000)	23,300,000
Other Operating Activities, Cash Flow Statement	55,200,000	12,500,000
Change in assets and liabilities (net of effects of acquisitions):
Increase in accounts receivable (net)	(546,900,000)	(144,300,000)
Increase (Decrease) in Unbilled Contract Receivable	117,800,000	59,500,000
Increase in inventories	(147,500,000)	(14,500,000)
Decrease in prepaid expenses and other	26,100,000	5,800,000
Decrease in accounts payable	17,300,000	(28,200,000)
Increase (Decrease) in Deferred Revenue	44,100,000	(1,000,000.0)
Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities	323,000,000.0	(165,800,000)
Net cash provided by operating activities	1,360,700,000	874,900,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(282,300,000)	(272,000,000.0)
Proceeds from sale of assets	1,100,000	5,800,000
Proceeds from Sale of Equity Method Investments	1,000,000.0	9,400,000
Proceeds from Hedge, Investing Activities	3,100,000	0
Investments in equity affiliates	(29,300,000)	(21,300,000)
Acquisition of businesses, net of cash acquired	(208,800,000)	(852,900,000)
Net cash used for investing activities	(515,200,000)	(1,131,000,000.0)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from revolving credit facilities	151,700,000	473,000,000.0
Payment, Tax Withholding, Share-based Payment Arrangement	(32,000,000.0)	(40,400,000)
Net proceeds from issuance of stock to employees	50,600,000	59,000,000.0
Payments for Repurchase of Common Stock	(100,000,000.0)	(400,000,000.0)
Other Financing Cash Flows	(22,800,000)	(21,900,000)
Repayments of Lines of Credit	(151,700,000)	(473,000,000.0)
Repayments of Senior Debt	(412,200,000)	0
Net cash provided by (used for) financing activities	(516,400,000)	196,700,000
Effect of exchange rate changes on cash and cash equivalents	600,000	(6,300,000)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	329,700,000	(65,700,000)
Cash and cash equivalents at beginning of period	337,500,000	426,800,000
Cash and cash equivalents at end of period	667,200,000	361,100,000
Proceeds from Issuance of Other Long-term Debt	0	850,000,000.0
Repayments of Other Long-term Debt	$ 0	$ (250,000,000.0)