Other Non-Operating Interest (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Component of Other Expense Income Nonoperating [Line Items]
FX gain/(loss)	$ 4.3	$ 9.7	$ 9.1	$ (2.5)
Legacy Tax benefit	1.6	6.4	1.6	6.4
Joint venture income	2.3	3.5	7.2	8.8
Other	(1.3)	0.1	(2.4)	1.3
Total	$ 6.9	$ 19.7	$ 15.5	$ 14.0

No definition available.

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- Definition

Exposure to certain potential tax liabilities assumed in connection with the 2000 Distribution Agreement with Old D&B, as further discussed in the footnotes to the financial statements.

+ References

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
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-SubTopic 20
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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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The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items.

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