Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash Flows from Operating Activities:
Net income	$ 12.6	$ 0.4
Adjustments to reconcile net income to net cash provided by operating activities:
Asset impairment	10.7	0.0
Depreciation and amortization expense	28.2	23.8
Deferred income tax expense	3.2	3.1
Gain on curtailment and payments in excess of expense for postretirement plan benefits	(0.6)	(4.7)
Share-based compensation expense	1.7	1.5
Loss from equity method investment	0.0	0.7
(Gain) loss on extinguishment of debt	(20.4)	9.4
Changes in working capital pertaining to operating activities (net of changes in held for sale working capital):
Receivables	(7.0)	16.7
Inventories	14.2	11.5
Accounts payable	(5.8)	(13.5)
Accrued liabilities	9.4	(16.7)
Interest payable	(11.6)	(11.2)
Income taxes	(0.6)	(2.8)
Other	(4.6)	(7.1)
Net cash provided by operating activities	29.4	11.1
Cash Flows from Investing Activities:
Capital expenditures	(13.8)	(8.3)
Decrease in restricted cash	7.9	0.0
Other investing activities	0.6	0.0
Net cash used in investing activities	(5.3)	(8.3)
Cash Flows from Financing Activities:
Proceeds from issuance of long-term debt	0.0	210.8
Repayment of long-term debt	(32.9)	(149.5)
Debt issuance costs	0.0	(4.2)
Proceeds from revolving facility	20.0	0.0
Repayment of revolving facility	(20.0)	0.0
Cash distribution to noncontrolling interests	(12.3)	(9.1)
Shares repurchased	0.0	(20.0)
Proceeds from exercise of stock options, net of shares withheld for taxes	(0.5)	(0.5)
Dividends paid	0.0	(3.9)
Net cash (used in) provided by financing activities	(45.7)	23.6
Net (decrease) increase in cash and cash equivalents	(21.6)	26.4
Cash and cash equivalents at beginning of period	123.4	139.0
Cash and cash equivalents at end of period	101.8	165.4
Supplemental Disclosure of Cash Flow Information
Interest paid	$ 26.4	$ 25.0