Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flow from operating activities:
Net income (loss)	$ 23.3	$ 64.9	$ 58.5
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation, depletion, and amortization	49.7	45.3	42.1
Impairment charge	59.8	0.9	0.1
(Gain) on sale of securities available for sale	(12.6)	0	0
Undistributed losses (earnings) from affiliates and joint ventures	(1.5)	(2.0)	(3.6)
Increase (decrease) in allowance for doubtful accounts	4.0	5.5	5.1
Decrease (increase) in deferred income taxes	(9.1)	(0.8)	6.8
Tax expense (benefit) from employee stock plans	(0.2)	(0.1)	0.6
(Gain) loss on sale of depreciable assets	0.2	(1.0)	(0.8)
Stock compensation expense	5.1	4.4	4.9
Excess tax benefits on stock option exercises	(0.2)	(0.4)	(0.7)
Other	(0.1)	2.3	0.5
(Increase) decrease in current assets, net of effects of acquisitions:
Accounts receivable	(19.2)	(0.3)	(37.2)
Income taxes receivable	(5.7)	1.2	0.3
Inventories	(4.8)	(7.6)	(46.1)
Prepaid expenses	1.4	(1.6)	(3.6)
Other assets	(0.5)	0	(0.1)
Increase (decrease) in current liabilities, net of effects of acquisitions:
Accounts payable	1.9	(6.7)	10.0
Accrued liabilities and income taxes	5.9	(1.1)	4.4
(Increase) decrease in other noncurrent assets	(3.2)	(0.4)	(0.6)
Increase (decrease) in other noncurrent liabilities	4.8	6.2	(1.3)
Net cash provided by operating activities	98.7	108.7	39.3
Cash flow from investing activities:
Proceeds from sale of land and depreciable assets	5.2	2.4	1.9
Capital expenditures	(87.7)	(74.5)	(61.0)
Proceeds from sale of available-for-sale securities	13.9	0	0
(Increase) decrease in investments and advances (to) from affiliates and joint ventures	(4.8)	0.2	(2.9)
Proceeds from sale of interests in affiliates and joint ventures	0	2.4	6.2
Other	0.9	1.4	1.6
Net cash used in investing activities	(72.5)	(68.1)	(54.2)
Cash flow from financing activities:
Proceeds from issuance of debt	1,706.2	1,575.8	1,345.0
Principal payments of debt	(1,706.0)	(1,588.1)	(1,319.7)
Proceeds from exercise of stock awards	7.0	9.7	8.1
Purchases of treasury stock	0	0	0
Excess tax benefits on stock option exercises	0.2	0.4	0.7
Contribution from noncontrolling partner	0.1	0.1	0
Dividends paid	(25.9)	(23.5)	(22.8)
Net cash provided by (used in) financing activities	(18.4)	(25.6)	11.3
Effect of foreign currency rate changes on cash	0	0.9	0.9
Net increase (decrease) in cash and cash equivalents	7.8	15.9	(2.7)
Cash and cash equivalents at the beginning of the year	40.0	24.1	26.8
Cash and cash equivalents at end of the year	47.8	40.0	24.1
Cash paid for:
Interest, net	10.2	10.6	10.7
Income taxes, net	$ 17.2	$ 18.3	$ 9.6