Taxes - Significant Components of Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Apr. 01, 2017
Deferred tax assets
Inventories	$ 3.8	$ 9.0
Payroll related accruals	1.6	2.2
Deferred rent	24.5	39.5
Net operating loss carryforwards	30.6	17.7
Stock compensation	16.8	26.2
Sales allowances	6.0	10.0
Other	27.0	14.7
Total deferred tax assets, gross	110.3	119.3
Valuation allowance	(13.8)	(7.2)
Total deferred tax assets	96.5	112.1
Deferred tax liabilities
Goodwill and intangibles	(240.6)	(112.3)
DTA - Depreciation	14.0
Depreciation		(2.7)
Other	0.0	(3.8)
Total deferred tax liabilities	(226.6)	(118.8)
Net deferred tax liabilities	$ (130.1)	$ (6.7)