Income Taxes (Narrative) (Details) - USD ($)	9 Months Ended	12 Months Ended
	Dec. 29, 2018	Mar. 30, 2019	Mar. 31, 2018	Mar. 25, 2017
Income Taxes [Line Items]
U.S. federal statutory rate		21.00%	31.60%	35.00%
Effective Income Tax Rate Reconciliation, Tax Cuts And Jobs Act, Percent		11.90%
Provision for one-time transition tax liability and remeasurement of deferred tax balances	$ (11,100,000)
Provision for one-time transition tax liability		$ 27,000,000	$ 53,900,000
Adjustment to provision for one-time transition tax liability		(11,000,000)
Provision for remeasurement of deferred tax balances		(100,000)	6,100,000
Increase (decrease) in valuation allowance		3,900,000
Decrease with no affect on tax expense		(200,000)
Net increase affecting tax expense		4,100,000
Gross unrecognized tax benefits		39,746,000	55,164,000	$ 30,858,000
Unrecognized tax benefits, gross increase		2,204,000	26,602,000
Gross decrease related to prior year unrecognized tax positions		(17,622,000)	(2,296,000)
Interest and penalties incurred during period		1,500,000	$ 800,000
Federal
Income Taxes [Line Items]
Net operating loss carryforwards		9,200,000
State
Income Taxes [Line Items]
Net operating loss carryforwards		22,200,000
Non-U.S.
Income Taxes [Line Items]
Accrued income taxes, foreign withholding		0
Research Tax Credit Carryforward | State
Income Taxes [Line Items]
Tax credit carryforward		$ 13,400,000