Name:	csc_ExpirationOfGuaranteeInNextFiscalYear
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of financial guarantee outstanding as of the balance sheet date, that expires in the second fiscal year following current fiscal year end.

No definition available.

Name:	csc_ExpirationOfGuaranteeInSecondFiscalYear
Namespace Prefix:	csc_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of financial guarantee outstanding as of the balance sheet date, that expires in the third fiscal year and thereafter following current fiscal year end.

No definition available.

Name:	csc_ExpirationOfGuaranteeInThirdFiscalYearAndThereafter
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Line of credit, terms. Reviewed annually.

No definition available.

Name:	csc_LineOfCreditTerm
Namespace Prefix:	csc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Amount of total financial guarantees outstanding.

No definition available.

Name:	csc_TotalGuaranteesOutstanding
Namespace Prefix:	csc_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Name:	us-gaap_GuaranteeObligationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_GuaranteeObligationsByNatureAxis=csc_SuretyBondsPerformanceGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: