Investment in Affiliated Company (Details) (Luxcel) In Millions, unless otherwise specified	Jan. 31, 2010 USD ($)	Jan. 31, 2010 EUR (€)
Investment in Affiliated Company
Cost method investment	$ 3.6	€ 2.5
Cost ownership interest (as a percent)	16.90%	16.90%

This element represents the aggregate carrying amount of all cost-method investments held by the Company. Generally, such investments do not have readily determinable fair values and are not required to be accounted for by the equity method. The carrying amount of such securities equates to cost, adjusted for other-than-temporary impairment. The cost method and lower-of-cost or market, an adaptation of the cost method, is generally followed for most investments in noncontrolled corporations, in some corporate joint ventures, and to a lesser extent in unconsolidated subsidiaries, particularly foreign.

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