Segment Information (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Oct. 02, 2015	Oct. 03, 2014	Oct. 02, 2015	Oct. 03, 2014
Segment Reporting Information [Line Items]
Revenues	$ 2,712	$ 3,080	$ 5,473	$ 6,317
Operating income	308	349	606	653
Depreciation and amortization	203	252	410	524
GBS
Segment Reporting Information [Line Items]
Revenues	891	1,003	1,810	2,091
Operating income	101	130	198	238
Depreciation and amortization	30	40	60	79
GIS
Segment Reporting Information [Line Items]
Revenues	854	1,036	1,739	2,167
Operating income	64	68	117	139
Depreciation and amortization	128	172	263	366
NPS
Segment Reporting Information [Line Items]
Revenues	967	1,041	1,924	2,059
Operating income	160	160	296	311
Depreciation and amortization	35	36	68	71
Corporate & Eliminations
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Operating income	(17)	(9)	(5)	(35)
Depreciation and amortization	$ 10	$ 4	$ 19	$ 8

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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