Acquisitions (Schedule Of Purchase Price Allocation) (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 25, 2021	Mar. 27, 2021
Purchase price of acquisitions allocation
Goodwill	$ 757,846	$ 689,524
Fiscal 2022 Acquisitions [Member]
Purchase price of acquisitions allocation
Inventory	946
Other current assets	217
Property and equipment	960
Finance lease and financing obligation assets	12,099
Operating lease assets	22,900
Intangible assets	2,211
Other non-current assets	63
Long-term deferred income tax assets	3,507
Total assets acquired	42,903
Current portion of finance leases and financing obligations	1,184
Current portion of operating lease liabilities	1,964
Deferred revenue	955
Other current liabilities	209
Long-term finance leases and financing obligations	17,480
Long-term operating lease liabilities	26,546
Other long-term liabilities	747
Total liabilities assumed	49,085
Total net identifiable liabilities assumed	(6,182)
Total consideration transferred	62,127
Less: total net identifiable liabilities assumed	(6,182)
Goodwill	$ 68,309