Supplemental Condensed Consolidating Financial Information - Consolidating Statement of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows from Operating Activities:
Net (loss) income	$ (57.7)	$ 12.6
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Asset impairment	0.0	10.7
Depreciation and amortization expense	33.3	28.2
Deferred income tax (benefit) expense	65.8	3.2
Payments in excess of expense for postretirement plan benefits	(0.7)	(0.6)
Share-based compensation expense	1.6	1.7
Equity in (loss) earnings of subsidiaries	0.0	0.0
Loss (gain) on extinguishment of debt	0.1	(20.4)
Changes in working capital pertaining to operating activities (net of the effects of held for sale working capital):
Receivables	(1.5)	(7.0)
Inventories	(18.6)	14.2
Accounts payable	26.4	(5.8)
Accrued liabilities	(8.9)	0.2
Deferred revenue	3.1	9.2
Interest payable	(9.5)	(11.6)
Income taxes	(1.1)	(0.6)
Other	(2.8)	(4.6)
Net cash (used in) provided by operating activities	29.5	29.4
Cash Flows from Investing Activities:
Capital expenditures	(12.7)	(13.8)
Decrease in restricted cash	0.1	7.9
Return of Brazilian investment	20.5	0.0
Other investing activities	0.0	0.6
Net cash provided by (used in) investing activities	7.9	(5.3)
Cash Flows from Financing Activities:
Repayment of long-term debt	(0.3)	(32.9)
Repayment of financing obligation	(0.6)	0.0
Proceeds from revolving credit facility	10.0	20.0
Repayment of revolving credit facility	(10.0)	(20.0)
Debt issuance costs	(0.6)	0.0
Cash distribution to noncontrolling interests	(12.4)	(12.3)
Other financing activities	(0.3)	(0.5)
Net increase (decrease) in advances from affiliate	0.0	0.0
Net cash provided by (used in) financing activities	(14.2)	(45.7)
Net increase (decrease) in cash and cash equivalents	23.2	(21.6)
Cash and cash equivalents at beginning of period	134.0	123.4
Cash and cash equivalents at end of period	157.2	101.8
Reportable Legal Entities | Issuer
Cash Flows from Operating Activities:
Net (loss) income	1.0	(4.1)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Asset impairment		0.0
Depreciation and amortization expense	0.0	0.0
Deferred income tax (benefit) expense	0.0	0.3
Payments in excess of expense for postretirement plan benefits	0.0	0.0
Share-based compensation expense	1.5	1.7
Equity in (loss) earnings of subsidiaries	(4.3)	(0.7)
Loss (gain) on extinguishment of debt	0.1	0.0
Changes in working capital pertaining to operating activities (net of the effects of held for sale working capital):
Receivables	0.0	0.0
Inventories	0.0	0.0
Accounts payable	0.0	0.0
Accrued liabilities	(1.0)	0.1
Deferred revenue	0.0	0.0
Interest payable	(1.0)	(0.8)
Income taxes	22.2	0.0
Other	0.2	1.4
Net cash (used in) provided by operating activities	18.7	(2.1)
Cash Flows from Investing Activities:
Capital expenditures	0.0	0.0
Decrease in restricted cash	0.0	0.0
Return of Brazilian investment	0.0
Other investing activities		0.0
Net cash provided by (used in) investing activities	0.0	0.0
Cash Flows from Financing Activities:
Repayment of long-term debt	0.0	0.0
Repayment of financing obligation	0.0
Proceeds from revolving credit facility	0.0	0.0
Repayment of revolving credit facility	0.0	0.0
Debt issuance costs	(0.6)
Cash distribution to noncontrolling interests	0.0	0.0
Other financing activities	(0.3)	(0.5)
Net increase (decrease) in advances from affiliate	(17.8)	2.6
Net cash provided by (used in) financing activities	(18.7)	2.1
Net increase (decrease) in cash and cash equivalents	0.0	0.0
Cash and cash equivalents at beginning of period	0.0	0.0
Cash and cash equivalents at end of period	0.0	0.0
Reportable Legal Entities | Guarantor Subsidiaries
Cash Flows from Operating Activities:
Net (loss) income	7.6	4.9
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Asset impairment		0.0
Depreciation and amortization expense	2.0	2.2
Deferred income tax (benefit) expense	(84.4)	5.7
Payments in excess of expense for postretirement plan benefits	(0.2)	(0.3)
Share-based compensation expense	0.0	0.0
Equity in (loss) earnings of subsidiaries	82.5	(11.3)
Loss (gain) on extinguishment of debt	0.0	0.0
Changes in working capital pertaining to operating activities (net of the effects of held for sale working capital):
Receivables	(2.3)	(0.8)
Inventories	(1.8)	0.2
Accounts payable	3.7	(0.5)
Accrued liabilities	(7.5)	0.3
Deferred revenue	0.0	0.0
Interest payable	0.0	0.0
Income taxes	(21.3)	0.1
Other	(1.4)	2.6
Net cash (used in) provided by operating activities	(23.1)	3.1
Cash Flows from Investing Activities:
Capital expenditures	(0.8)	(1.9)
Decrease in restricted cash	0.0	0.0
Return of Brazilian investment	0.0
Other investing activities		0.0
Net cash provided by (used in) investing activities	(0.8)	(1.9)
Cash Flows from Financing Activities:
Repayment of long-term debt	0.0	0.0
Repayment of financing obligation	0.0
Proceeds from revolving credit facility	0.0	0.0
Repayment of revolving credit facility	0.0	0.0
Debt issuance costs	0.0
Cash distribution to noncontrolling interests	0.0	0.0
Other financing activities	0.0	0.0
Net increase (decrease) in advances from affiliate	51.3	(10.7)
Net cash provided by (used in) financing activities	51.3	(10.7)
Net increase (decrease) in cash and cash equivalents	27.4	(9.5)
Cash and cash equivalents at beginning of period	59.7	70.6
Cash and cash equivalents at end of period	87.1	61.1
Reportable Legal Entities | Non- Guarantor Subsidiaries
Cash Flows from Operating Activities:
Net (loss) income	(144.5)	23.8
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Asset impairment		10.7
Depreciation and amortization expense	31.3	26.0
Deferred income tax (benefit) expense	150.2	(2.8)
Payments in excess of expense for postretirement plan benefits	(0.5)	(0.3)
Share-based compensation expense	0.1	0.0
Equity in (loss) earnings of subsidiaries	0.0	0.0
Loss (gain) on extinguishment of debt	0.0	(20.4)
Changes in working capital pertaining to operating activities (net of the effects of held for sale working capital):
Receivables	0.8	(6.2)
Inventories	(16.8)	14.0
Accounts payable	22.7	(5.3)
Accrued liabilities	(0.4)	(0.2)
Deferred revenue	3.1	9.2
Interest payable	(8.5)	(10.8)
Income taxes	(2.0)	(0.7)
Other	(1.6)	(8.6)
Net cash (used in) provided by operating activities	33.9	28.4
Cash Flows from Investing Activities:
Capital expenditures	(11.9)	(11.9)
Decrease in restricted cash	0.1	7.9
Return of Brazilian investment	20.5
Other investing activities		0.6
Net cash provided by (used in) investing activities	8.7	(3.4)
Cash Flows from Financing Activities:
Repayment of long-term debt	(0.3)	(32.9)
Repayment of financing obligation	(0.6)
Proceeds from revolving credit facility	10.0	20.0
Repayment of revolving credit facility	(10.0)	(20.0)
Debt issuance costs	0.0
Cash distribution to noncontrolling interests	(12.4)	(12.3)
Other financing activities	0.0	0.0
Net increase (decrease) in advances from affiliate	(33.5)	8.1
Net cash provided by (used in) financing activities	(46.8)	(37.1)
Net increase (decrease) in cash and cash equivalents	(4.2)	(12.1)
Cash and cash equivalents at beginning of period	74.3	52.8
Cash and cash equivalents at end of period	70.1	40.7
Combining and Consolidating Adjustments
Cash Flows from Operating Activities:
Net (loss) income	78.2	(12.0)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Asset impairment		0.0
Depreciation and amortization expense	0.0	0.0
Deferred income tax (benefit) expense	0.0	0.0
Payments in excess of expense for postretirement plan benefits	0.0	0.0
Share-based compensation expense	0.0	0.0
Equity in (loss) earnings of subsidiaries	(78.2)	12.0
Loss (gain) on extinguishment of debt	0.0	0.0
Changes in working capital pertaining to operating activities (net of the effects of held for sale working capital):
Receivables	0.0	0.0
Inventories	0.0	0.0
Accounts payable	0.0	0.0
Accrued liabilities	0.0	0.0
Deferred revenue	0.0	0.0
Interest payable	0.0	0.0
Income taxes	0.0	0.0
Other	0.0	0.0
Net cash (used in) provided by operating activities	0.0	0.0
Cash Flows from Investing Activities:
Capital expenditures	0.0	0.0
Decrease in restricted cash	0.0	0.0
Return of Brazilian investment	0.0
Other investing activities		0.0
Net cash provided by (used in) investing activities	0.0	0.0
Cash Flows from Financing Activities:
Repayment of long-term debt	0.0	0.0
Repayment of financing obligation	0.0
Proceeds from revolving credit facility	0.0	0.0
Repayment of revolving credit facility	0.0	0.0
Debt issuance costs	0.0
Cash distribution to noncontrolling interests	0.0	0.0
Other financing activities	0.0	0.0
Net increase (decrease) in advances from affiliate	0.0	0.0
Net cash provided by (used in) financing activities	0.0	0.0
Net increase (decrease) in cash and cash equivalents	0.0	0.0
Cash and cash equivalents at beginning of period	0.0	0.0
Cash and cash equivalents at end of period	$ 0.0	$ 0.0