CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Cash Flows [Abstract]
Other Financing Cash Flows	$ (25.3)	$ (16.0)	$ (36.5)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	824.9	883.9	1,232.9
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	577.2	552.1	533.2
Stock compensation	107.0	91.6	109.7
Gain (Loss) on Disposition of Business	13.2	(184.9)	0.0
Depreciation And Amortization Of Leased Assets	194.1	0.0	0.0
Increase (Decrease) in Deferred Liabilities	29.2	22.2	(525.8)
Other Operating Activities, Cash Flow Statement	(6.5)	10.8	25.8
Change in assets and liabilities (net of effects of acquisitions and divestitures):
(Increase) decrease in accounts receivable	(64.1)	50.2	(13.2)
Increase (Decrease) in Unbilled Receivables	(59.0)	(81.0)	4.0
Increase in inventory	(21.9)	(18.9)	(16.4)
(Increase) decrease in prepaid expenses and other	(42.6)	(57.9)	19.8
Increase (decrease) in accounts payable	(12.8)	43.3	172.3
Increase (Decrease) in Deferred Revenue	38.1	(33.8)	58.6
Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities	(132.1)	27.8	(102.8)
Net cash provided by operating activities	1,444.7	1,305.4	1,498.1
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(400.2)	(379.8)	(312.9)
Proceeds from sale of assets	7.7	50.1	5.5
Proceeds from Sale of Other Investments	11.2	0.0	0.0
Proceeds from Divestiture of Businesses	0.0	658.2	0.0
Proceeds from Derivative Instrument, Investing Activities	1.7	18.3	0.0
Acquisition of licensing technology	0.0	0.0	2.5
Payments to Acquire Equity Method Investments	27.5	22.3	36.2
Acquisition of businesses, net of cash acquired	(876.0)	(117.8)	(1,882.6)
Net cash (used for) provided by investing activities	(1,283.1)	206.7	(2,228.7)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from Senior Notes offerings	1,050.0	0.0	1,200.0
Repayments of Senior Debt	(687.9)	(400.0)	(500.1)
Proceeds from Issuance of Other Long-term Debt	850.0	0.0	750.0
Repayments of Other Long-term Debt	(1,002.0)	(295.0)	(493.0)
Proceeds from revolving credit facilities	495.0	467.2	1,392.2
Payments on revolving credit facilities	(495.0)	(467.2)	(1,392.2)
Payment of debt issuance costs	(11.6)	0.0	(15.3)
Net share settlement tax payments from issuance of stock to employees	(40.6)	(48.0)	(47.4)
Net proceeds from issuance of stock to employees	64.7	69.1	73.6
Purchase of common stock	(450.0)	(700.0)	(338.1)
Net cash (used for) provided by financing activities	(252.7)	(1,389.9)	593.2
Effect of exchange rate changes on cash and cash equivalents	1.8	(12.0)	20.5
Net increase (decrease) in cash and cash equivalents	(89.3)	110.2	(116.9)
Cash and cash equivalents at beginning of period	(426.8)	(316.6)	(433.6)
Cash included in assets held for sale	0.0	0.0	(0.1)
Cash and cash equivalents at end of period	$ (337.5)	$ (426.8)	$ (316.6)