CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income	$ 150.7	$ 143.6	$ 95.6
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	94.3	88.1	86.1
Amortization	2.4	2.6	3.8
Stock-based compensation	16.1	19.5	29.6
Non-cash restructuring charges	0.7	17.5	0.0
Pension curtailment gain	0.0	(2.1)	0.0
Pension settlement charge	0.0	0.0	50.4
Venezuela deconsolidation	11.1	0.0	0.0
Loss on sales of equipment	1.6	0.7	0.4
Deferred income taxes	41.7	21.5	(8.9)
Pension and other retirement plans, net	(6.9)	(6.5)	(28.8)
Equity in undistributed earnings of affiliates, net of dividends	(7.0)	(6.8)	(5.0)
Changes in assets/liabilities, net of acquisitions:
Increase in accounts receivable	(39.7)	(23.3)	(14.1)
Increase in inventories	(3.6)	(21.2)	(11.4)
Decrease (increase) in other current assets	0.3	(2.4)	(2.6)
Increase in accounts payable	12.6	6.1	17.2
Changes in other assets and liabilities	(11.0)	(17.9)	0.1
Net cash provided by operating activities	263.3	219.4	212.4
Cash flows from investing activities:
Capital expenditures	(130.8)	(170.2)	(131.6)
Purchase of cost-method investments	0.0	(8.4)	(1.5)
Cash related to deconsolidated Venezuelan subsidiary	(6.0)	0.0	0.0
Other, net	3.2	2.8	3.6
Net cash used in investing activities	(133.6)	(175.8)	(129.5)
Cash flows from financing activities:
Borrowings under revolving credit agreements	0.0	0.0	71.4
Repayments under revolving credit agreements	0.0	0.0	(71.4)
Debt issuance costs	0.0	0.0	(1.0)
Repayments of long-term debt	(34.9)	(69.8)	(27.4)
Dividend payments	(39.1)	(35.8)	(32.4)
Contingent consideration payments	(0.7)	(0.3)	(0.1)
Proceeds from exercise of stock options and stock appreciation rights	39.5	25.9	12.7
Employee stock purchase plan contributions	4.4	3.8	3.2
Excess tax benefit from employee stock plans	0.0	18.2	9.1
Shares repurchased under share repurchase program	(74.4)	(52.2)	0.0
Shares repurchased for employee tax withholdings	(3.8)	(3.7)	(5.6)
Net cash used in financing activities	(109.0)	(113.9)	(41.5)
Effect of exchange rates on cash	12.2	(1.3)	(22.1)
Net increase in cash and cash equivalents	32.9	(71.6)	19.3
Cash, including cash equivalents at beginning of period	203.0	274.6	255.3
Cash, including cash equivalents at end of period	235.9	203.0	274.6
Supplemental cash flow information:
Interest paid, net of amounts capitalized	8.0	8.6	14.7
Income taxes paid, net	31.0	48.1	33.1
Accrued capital expenditures	20.1	22.7	25.0
Dividends declared, not paid	$ 10.4	$ 9.5	$ 8.6