Effective Income Tax Rate Reconciliation, Foreign Sourced Earnings, Provisional GILTI Tax, Percent

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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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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Estimated amount of loss resulting from an adverse tax position.

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The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations.

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Amount of loss contingency liability.

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Amount of cash outflow reducing loss contingency liability.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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Income Taxes (Narrative) (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended			12 Months Ended
Income Taxes (Narrative) (Detail) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 30, 2018	Mar. 31, 2017	Apr. 03, 2015	Dec. 29, 2017	Mar. 07, 2018	Jan. 31, 2018
Income Tax Contingency [Line Items]
Effective income tax rate		12.00%	22.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent		7.00%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent		5.00%
Effective Income Tax Rate Reconciliation, Foreign Sourced Earnings, Provisional GILTI Tax, Percent		3.00%
Statutory federal income tax rate		21.00%	35.00%		35.00%
Unrecognized tax benefits that would impact effective tax rate		$ 71.6			$ 68.5
Unrecognized tax benefit liabilities include interest and penalties		13.8			$ 12.7
Tax Year 2010 and 2011 [Member] \| Internal Revenue Service (IRS) [Member]
Income Tax Contingency [Line Items]
Proposed Adjustments on Income Tax Assessments				$ 67.0
Loss Contingency Accrual							$ 15.8
Loss Contingency Accrual, Payments	$ 5.0
Income Tax Examination, Penalties and Interest Accrued						$ 51.0
Decrease in Unrecognized Tax Benefits is Reasonably Possible		$ 3.2