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Lease Commitments - Summary of Aggregate Minimum Rental Commitments under all Non-cancelable Operating Leases (Details)
$ in Millions
May. 02, 2015
USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]  
2016 $ 5.4
2017 4.1
2018 2.0
2019 1.4
2020 $ 1.0