Document And Entity Information (USD $)	12 Months Ended
	Apr. 03, 2015	May 15, 2015	Oct. 03, 2014
Document Information [Abstract]
Entity Registrant Name	COMPUTER SCIENCES CORP
Entity Central Index Key	0000023082
Current Fiscal Year End Date	--04-03
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Apr. 03, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		137,679,779
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 8,261,393,187