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Summary of Significant Accounting Policies (Details 4) - USD ($) $ in Millions | 3 Months Ended
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Jun. 30, 2018 | Jul. 01, 2017
Sales Returns and Allowances [Member] |  |
Rollforward of activity in the Company's allowance for doubtful accounts and its aggregate reserves for returns, discounts, end-of-season markdowns and operational chargebacks |  |
Beginning reserve balance | $ 202.5 | $ 202.8
Amount charged against revenue to increase reserve | 99.7 | 117.7
Amount credited against customer accounts to decrease reserve | (130.1) | (126.0)
Foreign currency translation | (4.9) | 5.1
Ending reserve balance | 167.2 | 199.6
Allowance for Doubtful Accounts |  |
Rollforward of activity in the Company's allowance for doubtful accounts and its aggregate reserves for returns, discounts, end-of-season markdowns and operational chargebacks |  |
Beginning reserve balance | 19.7 | 11.6
Amount recorded to expense to increase reserve | 0.0 | 2.5
Amount credited against customer accounts to decrease reserve | (0.4) | (0.7)
Foreign currency translation | (0.6) | 0.5
Ending reserve balance | $ 18.7 | $ 13.9

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