CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 99.7	$ 99.7
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	50.6	45.4
Amortization	1.3	1.4
Stock-based compensation	9.4	9.0
Non-cash restructuring charges	0.4	0.0
Venezuela deconsolidation	0.0	11.1
Contingent consideration payments in excess of acquisition-date liability	(0.5)	0.0
Other non-cash items, net	(3.4)	(3.6)
Changes in assets and liabilities	(30.5)	(57.0)
Net cash provided by operating activities	127.0	106.0
Cash flows from investing activities:
Capital expenditures	(48.2)	(67.0)
Cash related to deconsolidated Venezuela subsidiary	0.0	(6.0)
Other, net	2.5	2.8
Net cash used in investing activities	(45.7)	(70.2)
Cash flows from financing activities:
Repayments of long-term debt	0.0	(1.2)
Dividend payments	(20.7)	(19.1)
Contingent consideration payments up to amount of acquisition-date liability	0.0	(0.2)
Proceeds from exercise of stock options and stock appreciation rights	10.9	29.5
Employee stock purchase plan contributions	2.4	2.2
Shares purchased under share repurchase programs	(70.8)	(26.9)
Shares repurchased for employee tax withholdings	(4.4)	(3.8)
Net cash used in financing activities	(82.6)	(19.5)
Effect of exchange rates on cash	(9.1)	7.3
Net (decrease) increase in cash and cash equivalents	(10.4)	23.6
Cash and cash equivalents at beginning of period	235.9	203.0
Cash and cash equivalents at end of period	$ 225.5	$ 226.6