Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 162.7	$ 94.5	$ 253.6	$ 149.5
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	30.1	29.6	61.1	60.2
Equity in (income) loss of unconsolidated affiliates, including dividends	(0.3)	(0.4)	(1.1)	(1.0)
Gain on sale or impairment of long lived assets, net	0.0	(3.1)	(0.6)	(2.5)
Other operating credits and charges, net	(0.3)	2.0	(0.7)	5.4
Stock-based compensation related to stock plans	2.6	1.9	4.8	6.0
Exchange loss on remeasurement	0.1	1.5	0.0	1.7
Cash settlements of warranties, net of accruals	(0.6)	(2.4)	(1.5)	(5.6)
Cash settlements of contingencies, net of accruals	(5.3)	(0.3)	(1.5)	(0.3)
Pension expense, net of contributions	(2.1)	(2.1)	(0.5)	(0.7)
Other adjustments, net	(1.2)	(0.2)	0.7	0.2
Increase in receivables	(16.2)	(5.1)	(45.4)	(44.8)
(Increase) decrease in inventories	40.6	37.8	(13.4)	13.0
Increase in prepaid expenses	(4.0)	(2.7)	(5.2)	(3.3)
Increase (decrease) in accounts payable and accrued liabilities	18.5	14.6	(19.5)	(5.3)
Increase (decrease) in income taxes	12.7	(24.8)	37.2	(10.9)
Net cash provided by operating activities	237.3	140.8	268.0	161.6
CASH FLOWS FROM INVESTING ACTIVITIES:
Property, plant, and equipment additions	(44.4)	(19.6)	(87.6)	(45.7)
Proceeds from sales of assets	0.1	3.2	0.9	3.2
Investments in unconsolidated affiliate	(45.0)	0.0	(45.0)	0.0
Payment of long-term deposit	0.0	(32.0)	0.0	(32.0)
Receipt of proceeds from notes receivable from asset sales	22.2	0.0	22.2	0.0
Other investing activities	(0.1)	0.0	(0.3)	0.2
Net cash used in investing activities	(67.2)	(48.4)	(109.8)	(74.3)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of long-term debt	(0.2)	(0.1)	(0.3)	(1.3)
Payment of cash dividend	(18.7)	0.0	(37.6)	0.0
Purchase of treasury stock	(38.9)	0.0	(38.9)	0.0
Sale of common stock, net of cash payments under equity plans	0.0	(0.8)	0.1	(0.4)
Taxes paid related to net share settlement of equity awards	2.1	0.1	7.8	4.8
Other financing activities	0.0	0.0	3.1	0.0
Net cash used in financing activities	(59.9)	(1.0)	(81.4)	(6.5)
EFFECT OF EXCHANGE RATE ON CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(5.1)	(0.8)	(3.9)	(0.1)
Net increase in cash, cash equivalents and restricted cash	105.1	90.6	72.9	80.7
Cash, cash equivalents and restricted cash at beginning of period	909.1	662.6	941.3	672.5
Cash, cash equivalents and restricted cash at end of period	$ 1,014.2	$ 753.2	$ 1,014.2	$ 753.2