Condensed Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Operating Activities
Net income (loss)	$ 60.2	$ (21.4)
Adjustments to reconcile net income (loss) to net cash and cash equivalents provided by (used for) operating activities:
Earnings of non-consolidated affiliates	(1.5)	(1.1)
Losses on disposition of property, plant and equipment	0.4	0.6
Stock-based compensation	6.4	6.1
Depreciation and amortization	411.4	397.4
Deferred income taxes	(17.5)	(34.8)
Write-off of equipment and facility included in restructuring charges	0.0	76.6
Qualified pension plan contributions	(1.2)	(7.1)
Qualified pension plan income	(20.3)	(27.8)
Change in:
Receivables	(48.5)	18.2
Income taxes receivable/payable	10.6	(7.8)
Inventories	(46.7)	46.1
Other current assets	3.1	22.7
Accounts payable and accrued liabilities	92.9	(54.1)
Other assets	7.7	0.5
Other noncurrent liabilities	(13.6)	(7.5)
Other operating activities	11.7	0.5
Net operating activities	455.1	407.1
Investing Activities
Capital expenditures	(210.0)	(199.4)
Business acquired in purchase transaction, net of cash acquired	0.0	(69.5)
Payments under long-term supply contracts	(209.4)	(175.7)
Proceeds from sale/leaseback of equipment	0.0	40.4
Proceeds from disposition of property, plant and equipment	0.1	0.4
Proceeds from disposition of affiliated companies	0.0	6.6
Net investing activities	(419.3)	(397.2)
Financing Activities
Proceeds from Issuance of Long-term Debt	2,035.0	0.0
Long-term debt repayments	(1,907.4)	(176.1)
Stock options exercised	18.5	0.4
Dividends paid	(99.6)	(99.1)
Debt issuance costs	(11.2)	(0.8)
Net financing activities	35.3	(275.6)
Effect of exchange rate changes on cash and cash equivalents	0.3	0.7
Net increase (decrease) in cash and cash equivalents	71.4	(265.0)
Cash and cash equivalents, beginning of period	184.5	392.0
Cash and cash equivalents, end of period	255.9	127.0
Cash paid for interest and income taxes:
Interest, net	138.7	126.9
Income taxes, net of refunds	11.2	16.3
Non-cash investing activities:
Capital expenditures included in accounts payable and accrued liabilities	$ 25.0	$ (3.2)