Other Current Assets (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Other Current Assets [Abstract]
Prepaid expenses	$ 30.2	$ 27.7
Assets held for sale	6.1	6.2
Fair value of derivative assets	3.2	2.4
Other	7.3	2.3
Total other current assets	$ 46.8	$ 38.6

Fair values as of the balance sheet date for all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments and which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements.

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+ Details

- Definition

Sum of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer.

+ References+ Details