Document And Entity Information	6 Months Ended
	Oct. 03, 2014	Oct. 24, 2014
Entity Information [Line Items]
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-Q
Document Period End Date	Oct. 03, 2014
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		140,490,619