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Taxes On Earnings (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Apr. 28, 2012	Apr. 30, 2011
Taxes On Earnings [Abstract]
Reserves for unrecognized tax benefits	$ 53.0	$ 44.5
Interest related to the reserve for unrecognized tax benefits	10.8	12.5
Impact of recognizing taxes and interest related to unrecognized tax benefits	35.9
Unrecognized tax benefits reduction resulting from lapse of applicable statute of limitations	$ 1.1

This element represents the amount of interest expense accrued as of the date of the statement of financial position for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity.

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