Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net earnings	$ 944.4	$ 971.8	$ 658.6
Adjustments to reconcile net earnings to cash flows from operating activities:
Depreciation and amortization of property, plant and equipment	49.5	49.5	37.3
Amortization of intangible assets	317.5	295.5	203.2
Amortization of deferred financing costs	6.3	7.2	5.6
Non-cash stock compensation	133.8	83.1	78.8
Loss on debt extinguishment	15.9	0.0	0.9
Gain on sale of assets	0.0	(9.4)	0.0
Changes in operating assets and liabilities, net of acquired businesses:
Accounts receivable	(83.5)	(6.7)	(20.7)
Unbilled receivables	(14.0)	(13.5)	(1.2)
Inventories	(21.8)	(15.3)	6.3
Accounts payable and accrued liabilities	68.8	73.3	20.2
Deferred revenue	86.6	74.9	25.2
Income taxes	(67.6)	(257.0)	(47.6)
Other, net	(5.8)	(18.9)	(2.8)
Cash provided by operating activities	1,430.1	1,234.5	963.8
Cash flows from investing activities:
Acquisitions of businesses, net of cash acquired	(1,275.8)	(153.7)	(3,721.8)
Capital expenditures	(49.1)	(48.8)	(37.3)
Capitalized software expenditures	(9.5)	(10.8)	(2.8)
Proceeds from sale of assets	0.0	10.6	0.9
Other, net	(0.7)	(6.9)	8.1
Cash used in investing activities	(1,335.1)	(209.6)	(3,752.9)
Cash flows from financing activities:
Proceeds from senior notes	1,500.0	0.0	1,200.0
Payment of senior notes	(1,300.0)	(400.0)	0.0
Borrowings/(payments) under revolving line of credit, net	(405.0)	(660.0)	1,750.0
Principal payments on convertible notes	0.0	0.0	(4.3)
Debt issuance costs	(13.9)	0.0	(17.3)
Redemption premium for debt extinguishment	(15.5)	0.0	0.0
Cash dividends to stockholders	(170.1)	(142.8)	(121.1)
Treasury stock sales	5.4	4.2	3.3
Proceeds from stock based compensation, net	10.6	28.5	10.0
Redemption premium on convertible debt	0.0	0.0	(14.2)
Other	0.4	0.1	(1.1)
Cash provided by/(used in) financing activities	(388.1)	(1,170.0)	2,805.3
Effect of exchange rate changes on cash	(13.8)	59.2	(37.5)
Net decrease in cash and cash equivalents	(306.9)	(85.9)	(21.3)
Cash and cash equivalents, beginning of year	671.3	757.2	778.5
Cash and cash equivalents, end of year	364.4	671.3	757.2
Cash paid for:
Interest	169.0	175.0	104.9
Income taxes, net of refunds received	321.6	320.2	329.6
Noncash investing activities:
Fair value of assets, including goodwill	1,505.1	177.3	4,433.1
Liabilities assumed	(229.3)	(23.6)	(711.3)
Cash paid, net of cash acquired	$ 1,275.8	$ 153.7	$ 3,721.8