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Other (Expense) Income, Net (Detail) (USD $) In Millions	3 Months Ended		6 Months Ended
Other (Expense) Income, Net (Detail) (USD $) In Millions	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Other income
Interest income	$ 0.1		$ 0.2
Unrealized loss on financial derivatives	(3.6)	0.9	(1.9)	0.9
All other, net	0.1	(0.2)
Other (expense) income, net	$ (3.4)	$ 0.7	$ (1.7)	$ 0.9

The aggregate amount of other income 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 recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) profits on securities (net of losses), and (d) miscellaneous other income items.

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