CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOW - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash from operating activities:
Net income	$ 268.3	$ 227.3
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	60.5	54.1
Stock-based compensation expense	12.7	12.1
Deferred income tax (benefit) provision	(0.2)	4.5
Net change in components of working capital	(133.3)	(66.8)
Net change in other long-term assets and liabilities	(77.8)	6.6
Net cash provided by operating activities	130.2	237.8
Cash from investing activities:
Capital expenditures	(54.9)	(48.7)
Proceeds from disposals of property, plant and equipment	0.8	0.3
Purchases of short-term investments	(6.8)	(18.2)
Sales and maturities of short-term investments	18.1	122.1
Acquisitions, net of cash acquired	(99.5)	(46.6)
Net cash (used in) provided by investing activities	(142.3)	8.9
Cash from financing activities:
(Repayments) borrowings under commercial paper program, net	(304.8)	225.3
Proceeds from exercise of stock options	20.6	23.7
Distributions to shareholders of noncontrolling interests	(3.9)	(4.2)
Purchase and retirement of treasury stock	(382.0)	(249.2)
Dividend payments	(58.1)	(49.3)
Net cash used in financing activities	(728.2)	(53.7)
Effect of exchange rate changes on cash and cash equivalents	21.4	15.3
Net change in cash and cash equivalents	(718.9)	208.3
Cash and cash equivalents balance, beginning of period	1,719.1	1,034.6
Cash and cash equivalents balance, end of period	1,000.2	1,242.9
Cash paid for:
Interest	41.0	32.4
Income taxes	$ 75.9	$ 77.4