Amount of the cumulative effect on retained earnings net of related income tax effect.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Summary Of Significant Accounting Policies (New Accounting Pronouncements) (Details) - USD ($) $ in Millions	May 01, 2018	Apr. 30, 2018
Retained Earnings Adjustments [Line Items]
Future minimum operating lease commitments		$ 820.9
ASU 2016-16
Retained Earnings Adjustments [Line Items]
Cumulative effect adjustment, increase in opening balance of retained earnings	$ 101.0