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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Mar. 31, 2018
Operating Loss Carryforwards [Line Items]
Effective tax rate	9.40%	16.40%
Unrecognized tax benefits	$ 123.2		$ 107.4
Decrease in unrecognized tax benefits is possible in the next twelve months	$ 34.4
United Kingdom | Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Provision for incomes taxes at the U.K. statutory tax rate	19.00%

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Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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