Common Stock, Conversion Features, Percent Of Outstanding Common Stock

No definition available.

Name:	csc_CommonStockConversionFeaturesPercentOfOutstandingCommonStock
Namespace Prefix:	csc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Common Stock, Conversion Features, Right To Receive Cash And Common Stock

+ References

No definition available.

+ Details

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

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=csc_ComputerSciencesCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=csc_CSRAIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended		6 Months Ended
	Nov. 30, 2015	Nov. 04, 2015	Oct. 02, 2015	Oct. 03, 2014	Oct. 02, 2015	Oct. 03, 2014
Subsequent Event [Line Items]
Cash dividend per common share (in dollars per share)			$ 0.23	$ 0.23	$ 0.46	$ 0.46
Subsequent Event
Subsequent Event [Line Items]
Cash dividend per common share (in dollars per share)		$ 10.50
Subsequent Event \| Scenario, Forecast
Subsequent Event [Line Items]
Common stock conversion to right to receive cash and CSRA common stock	$ 390
Percent of CSRA's outstanding common stock	15.32%
Subsequent Event \| CSC
Subsequent Event [Line Items]
Cash dividend per common share (in dollars per share)		2.25
Subsequent Event \| CSRA Inc
Subsequent Event [Line Items]
Cash dividend per common share (in dollars per share)		$ 8.25