Financial Information for Subsidiary and Guarantor Parent (Cash Flow) (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016
Statement of Cash Flows
Cash flows provided by (used in) operating activities	$ (85.5)	$ (33.6)
Investing Activities:
Purchases of property, plant and equipment	(55.3)	(145.3)
Net receipts/(payments) on intercompany activity	0.0	0.0
Asset disposals and other	3.3	1.8
Cash used in investing activities	(52.0)	(143.5)
Financing Activities:
Borrowings on long-term debt	7.3	387.5
Payments on long-term debt and capital leases	(0.8)	(0.6)
Net borrowings under credit facilities	59.4	2.5
Debt issuance costs	(0.8)	(10.4)
Net receipts/(payments) on intercompany activity	0.0	0.0
Sale to noncontrolling Interests	2.2	0.0
Dividends paid to stockholders	0.0	(17.2)
Acquisition of noncontrolling interests	0.0	(12.2)
Shares repurchased for income tax withholding on share-based compensation	(4.8)	0.0
Cash provided by financing activities	62.5	349.6
Increase (decrease) in cash and cash equivalents	(75.0)	172.5
Reportable Legal Entities \| Parent Company
Statement of Cash Flows
Cash flows provided by (used in) operating activities	(54.6)	(50.5)
Investing Activities:
Purchases of property, plant and equipment	0.0	(0.3)
Net receipts/(payments) on intercompany activity	0.0	0.0
Asset disposals and other	0.0	0.0
Cash used in investing activities	0.0	(0.3)
Financing Activities:
Borrowings on long-term debt	0.0	287.5
Payments on long-term debt and capital leases	(0.2)	(0.3)
Net borrowings under credit facilities	0.0	0.0
Debt issuance costs	0.0	(9.4)
Net receipts/(payments) on intercompany activity	59.8	(209.8)
Sale to noncontrolling Interests	0.0
Dividends paid to stockholders		(17.2)
Acquisition of noncontrolling interests		0.0
Shares repurchased for income tax withholding on share-based compensation	(4.8)
Cash provided by financing activities	54.8	50.8
Increase (decrease) in cash and cash equivalents	0.2	0.0
Reportable Legal Entities \| Subsidiary
Statement of Cash Flows
Cash flows provided by (used in) operating activities	(55.4)	(166.8)
Investing Activities:
Purchases of property, plant and equipment	(19.9)	(85.3)
Net receipts/(payments) on intercompany activity	0.0	0.0
Asset disposals and other	0.1	0.0
Cash used in investing activities	(19.8)	(85.3)
Financing Activities:
Borrowings on long-term debt	0.0	0.0
Payments on long-term debt and capital leases	(0.2)	(0.1)
Net borrowings under credit facilities	0.0	0.0
Debt issuance costs	0.0	0.0
Net receipts/(payments) on intercompany activity	75.5	253.3
Sale to noncontrolling Interests	0.0
Dividends paid to stockholders		0.0
Acquisition of noncontrolling interests		0.0
Shares repurchased for income tax withholding on share-based compensation	0.0
Cash provided by financing activities	75.3	253.2
Increase (decrease) in cash and cash equivalents	0.1	1.1
Reportable Legal Entities \| NonGuarantor Subsidiaries
Statement of Cash Flows
Cash flows provided by (used in) operating activities	24.5	183.7
Investing Activities:
Purchases of property, plant and equipment	(35.4)	(59.7)
Net receipts/(payments) on intercompany activity	(135.3)	(43.5)
Asset disposals and other	3.2	1.8
Cash used in investing activities	(167.5)	(101.4)
Financing Activities:
Borrowings on long-term debt	7.3	100.0
Payments on long-term debt and capital leases	(0.4)	(0.2)
Net borrowings under credit facilities	59.4	2.5
Debt issuance costs	(0.8)	(1.0)
Net receipts/(payments) on intercompany activity	0.0	0.0
Sale to noncontrolling Interests	2.2
Dividends paid to stockholders		0.0
Acquisition of noncontrolling interests		(12.2)
Shares repurchased for income tax withholding on share-based compensation	0.0
Cash provided by financing activities	67.7	89.1
Increase (decrease) in cash and cash equivalents	(75.3)	171.4
Eliminations
Statement of Cash Flows
Cash flows provided by (used in) operating activities	0.0	0.0
Investing Activities:
Purchases of property, plant and equipment	0.0	0.0
Net receipts/(payments) on intercompany activity	135.3	43.5
Asset disposals and other	0.0	0.0
Cash used in investing activities	135.3	43.5
Financing Activities:
Borrowings on long-term debt	0.0	0.0
Payments on long-term debt and capital leases	0.0	0.0
Net borrowings under credit facilities	0.0	0.0
Debt issuance costs	0.0	0.0
Net receipts/(payments) on intercompany activity	(135.3)	(43.5)
Sale to noncontrolling Interests	0.0
Dividends paid to stockholders		0.0
Acquisition of noncontrolling interests		0.0
Shares repurchased for income tax withholding on share-based compensation	0.0
Cash provided by financing activities	(135.3)	(43.5)
Increase (decrease) in cash and cash equivalents	$ 0.0	$ 0.0

Net Receipts Payments on Intercompany Activity

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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