Adjustment to Amount of Goodwill Impairment Charge

No definition available.

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Namespace Prefix:	csc_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Goodwill Impairment Loss for Annual and Second Quarter Test

+ References

No definition available.

+ Details

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Namespace Prefix:	csc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Other increases or decreases during the reporting period in the carrying value of goodwill that are not separately disclosed.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Total of write-off of the carrying amount of goodwill associated with all or a portion of a reporting unit that is sold in the period and other increases or decreases during the reporting period in the carrying value of goodwill that are not separately disclosed.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a,h)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

Name:	us-gaap_GoodwillGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a,h)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

Name:	us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: 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=31042434&loc=d3e3602-108585

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_GoodwillRollForward
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- Definition

Amount of transfers of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized among segments.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

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Period Type:	duration

- Details

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Goodwill (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended
	Sep. 30, 2011	Mar. 28, 2014	Mar. 29, 2013	Mar. 30, 2012	Dec. 30, 2011	Apr. 01, 2011
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill Gross		$ 4,278us-gaap_GoodwillGross	$ 4,514us-gaap_GoodwillGross
Goodwill Accumulated impairment loss		(2,762)	(2,762)
Goodwill Acquired during period and contingent consideration paid		211us-gaap_GoodwillAcquiredDuringPeriod	25us-gaap_GoodwillAcquiredDuringPeriod
Deductions		(53)csc_GoodwillTotalDeductions	(241)csc_GoodwillTotalDeductions
Foreign Currency Translation		(7)	(20)
Goodwill, Other reclassifications		0csc_GoodwillOtherReclassifications
Goodwill impairment		0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss	(232)us-gaap_GoodwillImpairmentLoss
Goodwill Gross		4,429us-gaap_GoodwillGross	4,278us-gaap_GoodwillGross	4,514us-gaap_GoodwillGross
Goodwill Impaired Accumulated Impairment loss		(2,762)	(2,762)	(2,762)
Goodwill		1,667us-gaap_Goodwill	1,516us-gaap_Goodwill	1,752us-gaap_Goodwill
Goodwill Impairment Loss for Annual and Second Quarter Test	155
NPS [Member]
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill Gross		793	768
Goodwill Accumulated impairment loss		0	0
Goodwill Acquired during period and contingent consideration paid		36	25
Deductions		(41)	0
Foreign Currency Translation		0	0
Goodwill, Other reclassifications		0
Goodwill Gross		788	793
Goodwill Impaired Accumulated Impairment loss		0	0
Goodwill		788	793	768
GIS Segment [Member]
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill Gross		2,139	2,139
Goodwill Accumulated impairment loss		(2,061)	(2,061)
Goodwill Acquired during period and contingent consideration paid		120	0
Deductions		0	0
Foreign Currency Translation		1	0
Goodwill, Other reclassifications		0
Goodwill Gross		2,260	2,139
Goodwill Impaired Accumulated Impairment loss		(2,061)	(2,061)
Goodwill		199	78	78
GBS Segment [Member]
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill Gross		1,346	1,607
Goodwill Accumulated impairment loss		(701)	(701)
Goodwill Acquired during period and contingent consideration paid		55	0
Deductions		(12)	(241)
Foreign Currency Translation		(8)	(20)
Goodwill, Other reclassifications		0
Goodwill Gross		1,381	1,346
Goodwill Impaired Accumulated Impairment loss		(701)	(701)
Goodwill		680	645	906
Goodwill, Transfers			47
GBS - IS&S [Member] \| GBS Segment [Member]
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill impairment	(158)					(77)
Adjustment to Amount of Goodwill Impairment Charge					$ 3