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Derivative Instruments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Derivative Instrument Detail [Abstract]
Percentage of company sales denominated in U.S. dollars (in hundredths)	99.00%
Foreign Currency Transaction Gain (Loss), Realized	$ (1.0)	$ 0.7

- Definition

The net realized foreign currency transaction gain (loss) (pretax) included in determining net income from transactions that were settled as of the balance sheet date.

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