Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 109.8	$ 65.6	$ 259.2	$ 107.6
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	31.1	29.6	91.3	86.0
Equity in income of unconsolidated affiliates, including dividends	(0.2)	0.0	(1.2)	0.3
(Gain) loss on sale or impairment of long-lived assets, net	0.7	0.3	(1.8)	1.0
Loss on early debt extinguishment	0.0	13.2	0.0	13.2
Other operating credits and charges, net	(0.9)	0.0	4.5	11.4
Stock-based compensation related to stock plans	2.0	3.2	8.0	9.4
Exchange (gain) loss on remeasurement	(0.1)	(0.2)	1.6	(0.9)
Cash settlements of warranties, net of accruals	0.1	(4.6)	(5.5)	(11.4)
Pension expense, net of contributions	(3.2)	0.0	(3.9)	1.4
Non-cash interest expense, net	0.1	1.4	0.3	1.6
Other adjustments, net	(0.2)	(0.6)	(0.4)	(1.3)
(Increase) decrease in receivables	(17.1)	14.1	(61.9)	(37.0)
(Increase) decrease in inventories	(8.5)	4.8	4.5	(3.2)
(Increase) decrease in prepaid expenses	0.6	0.7	(2.7)	(1.9)
Increase in accounts payable and accrued liabilities	18.1	17.8	12.8	59.5
Increase (decrease) in income taxes	11.1	(9.2)	0.2	4.6
Net cash provided by operating activities	143.4	136.1	305.0	240.3
CASH FLOWS FROM INVESTING ACTIVITIES:
Property, plant, and equipment additions	(35.0)	(27.6)	(80.7)	(78.7)
Proceeds from sales of assets	0.1	0.0	3.3	0.0
(Increase) decrease in restricted cash under letters of credit/credit facility	0.0	0.2	0.0	(0.1)
Increase in restricted cash for redemption of long-term debt	0.0	93.4	0.0	93.4
Payment of long-term deposit	0.0	0.0	(32.0)	0.0
Other investing activities	0.1	(0.1)	0.1	(0.2)
Net cash used in investing activities	(34.8)	(120.9)	(109.3)	(172.4)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings of long-term debt	0.0	350.0	0.0	350.0
Repayment of long-term debt	(1.2)	(274.8)	(2.5)	(282.7)
Payment of debt issuance fees		(5.0)	0.0	(5.0)
Sale of common stock, net of cash payments under equity plans	0.0	0.0	(0.4)	(0.1)
Taxes paid related to net share settlement of equity awards	(0.5)	(0.8)	(5.3)	(8.9)
Net cash provided by (used in) financing activities	(1.7)	69.4	(8.2)	53.3
EFFECT OF EXCHANGE RATE ON CASH AND CASH EQUIVALENTS	1.8	0.3	1.9	3.8
Net increase in cash and cash equivalents	108.7	84.9	189.4	125.0
Cash and cash equivalents at beginning of period	740.0	474.8	659.3	434.7
Cash and cash equivalents at end of period	$ 848.7	$ 559.7	$ 848.7	$ 559.7