Other Non-Operating Interest (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Component of Other Expense Income Nonoperating [Line Items]
FX gain/(loss)	$ 3.8	$ 0.8	$ (5.8)	$ 4.8
Joint venture income	4.0	3.0	5.0	4.9
Other	0.5	(0.8)	(0.3)	(1.1)
Total	$ 8.3	$ 3.0	$ (1.1)	$ 8.6

No definition available.

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- Definition

Other non operating income (expense) not be classified as any of the following: fx gain (loss), legacy tax or joint venture income.

+ References

No definition available.

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- Definition

Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
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- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

+ References

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

Amount of income (expense) related to nonoperating activities, classified as other.

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