Goodwill (Details) (USD $)	3 Months Ended	12 Months Ended						3 Months Ended	12 Months Ended			12 Months Ended				3 Months Ended		12 Months Ended		3 Months Ended
	Sep. 30, 2011	Mar. 29, 2013	Mar. 30, 2012 Businesses reporting_unit	Apr. 01, 2011	Mar. 29, 2013 NPS [Member]	Mar. 30, 2012 NPS [Member] Businesses	Apr. 01, 2011 NPS [Member]	Sep. 30, 2011 MSS [Member]	Mar. 29, 2013 MSS [Member]	Mar. 30, 2012 MSS [Member] Businesses	Apr. 01, 2011 MSS [Member]	Mar. 29, 2013 BSS [Member] reporting_unit	Mar. 30, 2012 BSS [Member] Businesses	Apr. 01, 2011 BSS [Member]	Sep. 30, 2011 Health [Member]	Sep. 30, 2011 Health [Member] MSS [Member]	Dec. 30, 2011 Health [Member] BSS [Member]	Apr. 01, 2011 Health [Member] BSS [Member]	Sep. 30, 2011 Health [Member] BSS [Member]	Sep. 30, 2011 GBS [Member]	Sep. 30, 2011 GBS [Member] BSS [Member]	Mar. 30, 2012 GBS [Member] BSS [Member]
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill Gross		$ 4,516,000,000	$ 4,057,000,000		$ 768,000,000	$ 753,000,000			$ 2,221,000,000	$ 1,965,000,000		$ 1,527,000,000	$ 1,339,000,000
Goodwill Accumulated impairment loss		(2,764,000,000)	(19,000,000)		0	0			(2,074,000,000)	0		(690,000,000)	(19,000,000)
Goodwill Acquired during period and contingent consideration paid		25,000,000	476,000,000		25,000,000	15,000,000			0	157,000,000		0	304,000,000
Deductions		(241,000,000)			0				0			(241,000,000)
Foreign Currency Translation		(20,000,000)	(17,000,000)		0	0			(11,000,000)	3,000,000		(9,000,000)	(20,000,000)
Goodwill, Other reclassifications		0	0		0	0			(11,000,000)	96,000,000		11,000,000	(96,000,000)
Goodwill impairment		0	(2,745,000,000)	0		0		(2,074,000,000)		(2,074,000,000)			(671,000,000)			(158,000,000)		(63,000,000)		(2,685,000,000)	(453,000,000)
Goodwill Gross		4,280,000,000	4,516,000,000	4,057,000,000	793,000,000	768,000,000			2,199,000,000	2,221,000,000		1,288,000,000	1,527,000,000
Goodwill Impaired Accumulated Impairment loss		(2,764,000,000)	(2,764,000,000)	(19,000,000)	0	0			(2,074,000,000)	(2,074,000,000)		(690,000,000)	(690,000,000)
Goodwill		1,516,000,000	1,752,000,000	4,038,000,000	793,000,000	768,000,000	753,000,000	143,000,000	125,000,000	147,000,000	1,965,000,000	598,000,000	837,000,000	1,320,000,000			0		60,000,000			0
Business Acquisition, Purchase Price Allocation, Goodwill Amount																			18,000,000
Adjustment to Amount of Goodwill Impairment Charge																	3,000,000
Goodwill Impairment Loss for Annual and Second Quarter Test	2,682,000,000
Excess of Estimate, Fair Value of Reporting Unit Over Carrying Value, Percent															6.00%
Goodwill, Other Changes												(11,000,000)
Additions to goodwill related to acquisitions of new businesses			475,000,000
Number of entities acquired			4			1				1			2
Contingent consideration paid						1,000,000
Number Of Reporting Units With Goodwill Impairment			3									2
Number Of Reporting Units To Which Goodwill Has Been Assigned For Impairment Testing			8
Unrecognized Intangible Assets										$ 1,300,000,000