Supplementary Information (Property and Equipment) (Details) - USD ($) $ in Millions	Sep. 28, 2018	Mar. 30, 2018
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 2,018	$ 1,990
Accumulated depreciation and amortization	(1,240)	(1,212)
Total property and equipment, net	778	778	[1]
Land
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	65	66
Computer hardware and software
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	1,095	1,081
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	108	110
Buildings
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	365	365
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	331	339
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 54	$ 29

[1] Derived from audited financial statements.