Income Taxes - Schedule of Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Apr. 29, 2017	Apr. 30, 2016	May 02, 2015
Current
Federal	$ 9.2	$ 2.8	$ 5.4
Foreign	17.0	14.7	13.8
State	0.7	0.6	0.9
Subtotal	26.9	18.1	20.1
Deferred
Federal and state	(1.2)	5.5	6.0
Foreign	(2.7)	2.7	(6.3)
Subtotal	(3.9)	8.2	(0.3)
Total income tax expense	$ 23.0	$ 26.3	$ 19.8

Deferred Federal and State Income Tax Expense (Benefit)

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Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

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