Goodwill and Other Intangible Assets (Other Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Oct. 03, 2014	Sep. 27, 2013	Oct. 03, 2014	Sep. 27, 2013	Mar. 28, 2014
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Value	$ 4,475		$ 4,475		$ 4,383
Accumulated Amortization	3,154		3,154		3,033
Net Carrying Value	1,321		1,321		1,350
Amortization expense	107	94	222	192
Outsourcing Contract Costs Amortization Expense	8	8	17	17
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Remainder of 2014	198		198
2015	325		325
2016	249		249
2017	200		200
2018	179		179
Outsourcing contract costs
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Value	1,438		1,438		1,465
Accumulated Amortization	1,078		1,078		1,038
Net Carrying Value	360		360		427
Software
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Value	2,545		2,545		2,330
Accumulated Amortization	1,751		1,751		1,680
Net Carrying Value	794		794		650
Customer and other intangible assets
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Value	492		492		588
Accumulated Amortization	325		325		315
Net Carrying Value	167		167		273
Amortization expense	2	3	5	6
Internal-use software | Software
Finite-Lived Intangible Assets, Net [Abstract]
Amortization expense	56	45	110	89
GIS
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Gain (Loss) on Disposition of Intangible Assets	19		43
GIS | Network-related Intangible Assets
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Proceeds from sale of intangible assets	10		14
Receivable from sale of intangible assets	$ 29		$ 29