Goodwill and Other Intangible Assets (Goodwill) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 28, 2013
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill Gross	$ 4,261	[1]
Accumulated impairment losses	(2,745)	[1]
Balance as of March 29, 2013, net	1,516
Deductions	(55)
Foreign currency translation	(17)
Goodwill Gross	4,189
Accumulated impairment losses	(2,745)
Balance as of June 28, 2013, net	1,444
Goodwill, Other Changes	19
GBS [Member]
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill Gross	1,319	[1]
Accumulated impairment losses	(671)	[1]
Balance as of March 29, 2013, net	648
Deductions	(12)
Foreign currency translation	(17)
Goodwill Gross	1,290
Accumulated impairment losses	(671)
Balance as of June 28, 2013, net	619
Goodwill, Transfers	50
GIS [Member]
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill Gross	2,149	[1]
Accumulated impairment losses	(2,074)	[1]
Balance as of March 29, 2013, net	75
Deductions	0
Foreign currency translation	0
Goodwill Gross	2,149
Accumulated impairment losses	(2,074)
Balance as of June 28, 2013, net	75
NPS [Member]
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill Gross	793	[1]
Accumulated impairment losses	0	[1]
Balance as of March 29, 2013, net	793
Deductions	(43)
Foreign currency translation	0
Goodwill Gross	750
Accumulated impairment losses	0
Balance as of June 28, 2013, net	$ 750

[1] Both the gross goodwill and accumulated impairment losses amounts have been adjusted by $19 million, to reflect the fully impaired goodwill associated with the fiscal 2013 divested enterprise systems integration business.