Income Taxes (Narrative) (Details) - USD ($) $ in Thousands			3 Months Ended	12 Months Ended
	Mar. 28, 2024	Dec. 29, 2023	Mar. 31, 2024	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Net operating loss and tax credit carryforwards
Benefit related to reversal of uncertain tax positions			$ 25,100
Benefit due to remeasurement of deferred tax assets	$ 50,100			$ 5,100
Recognition of excess tax benefits				18,700
Valuation allowance			35,536	35,536	$ 30,766
Cumulative amount of unremitted earnings of non-Swiss subsidiaries			426,200	426,200
Deferred income tax liability			16,000	16,000
Unrecognized tax benefits that would impact effective tax rate			192,700	192,700	186,800
Unrecognized tax benefits, uncertain tax positions			210,215	210,215	191,000	$ 179,372	$ 163,253
Interest and penalties in income tax expense				1,700	2,700
Accrued interest and penalties related to uncertain tax positions			7,800	7,800	6,100
Minimum
Net operating loss and tax credit carryforwards
Effective income tax rates (as a percent)		13.61%
Maximum
Net operating loss and tax credit carryforwards
Effective income tax rates (as a percent)		14.28%
Non-current income tax payable
Net operating loss and tax credit carryforwards
Unrecognized tax benefits, uncertain tax positions			112,600	112,600	$ 106,400
Swiss Federal Tax Administration (FTA)
Net operating loss and tax credit carryforwards
Foreign net operating loss carryforwards			15,000	$ 15,000
Swiss
Net operating loss and tax credit carryforwards
Statutory income tax rate (as a percent)				8.50%	8.50%	8.50%
State and Local Jurisdiction | California Franchise Tax Board
Net operating loss and tax credit carryforwards
Valuation allowance			35,300	$ 35,300	$ 30,800
Foreign
Net operating loss and tax credit carryforwards
Foreign net operating loss carryforwards			55,000	55,000
Foreign tax credit carryforwards			$ 79,700	$ 79,700