Leases (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Sep. 28, 2018	Sep. 28, 2018	Oct. 04, 2019
Property, Plant and Equipment [Line Items]
Rent expense	$ 18	$ 37
Minimum | Facilities
Property, Plant and Equipment [Line Items]
Operating lease, term of contract			1 year
Minimum | Equipment
Property, Plant and Equipment [Line Items]
Operating lease, term of contract			1 year
Minimum | Data Center Co-locations
Property, Plant and Equipment [Line Items]
Operating lease, term of contract			1 year
Maximum | Facilities
Property, Plant and Equipment [Line Items]
Operating lease, term of contract			17 years
Maximum | Equipment
Property, Plant and Equipment [Line Items]
Operating lease, term of contract			6 years
Maximum | Data Center Co-locations
Property, Plant and Equipment [Line Items]
Operating lease, term of contract			6 years