Schedule of Supplemental Cash Flow Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement Of Cash Flows
Receivables	$ (16.8)	$ (32.3)	$ (57.0)
Inventories	(14.9)us-gaap_IncreaseDecreaseInInventories	(28.5)us-gaap_IncreaseDecreaseInInventories	5.0us-gaap_IncreaseDecreaseInInventories
Other current assets	(7.7)	(7.5)	(0.8)
Trade payables	6.9	58.0	26.4
Accrued liabilities, including payroll and benefits	2.1	29.4	3.1
Income taxes payable	(7.7)	1.4	(13.3)
Increase (Decrease) in Other Current Assets and Liabilities, Net, Total	$ (38.1)	$ 20.5	$ (36.6)

The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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- Definition

The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.

+ References

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- Definition

The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction.

+ References

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- Definition

The increase (decrease) during the reporting period in the aggregate amount of accrued expenses and other operating obligations not separately disclosed in the statement of cash flows.

+ References

No definition available.

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- Definition

The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.

+ References

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- Definition

The increase (decrease) during the reporting period in other current operating assets not separately disclosed in the statement of cash flows.

+ References

No definition available.

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- Definition

The increase (decrease) during the reporting period in other current operating assets less other current operating liabilities not separately disclosed in the statement of cash flows.

+ References

No definition available.

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