Document And Entity Information - USD ($)	12 Months Ended
	Apr. 01, 2016	May 13, 2016	Oct. 02, 2015
Document Information [Abstract]
Entity Registrant Name	COMPUTER SCIENCES CORP
Entity Central Index Key	0000023082
Current Fiscal Year End Date	--04-01
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Apr. 01, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		138,523,516
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 8,609,679,934