Document And Entity Information (USD $)	12 Months Ended
	Mar. 28, 2014	Apr. 25, 2014	Sep. 27, 2013
Document Information [Abstract]
Entity Registrant Name	COMPUTER SCIENCES CORP
Entity Central Index Key	0000023082
Current Fiscal Year End Date	--03-28
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Mar. 28, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Amendment Flag	true
Amendment Description	This Amendment No. 1 on Form 10-K/A (this Form 10-K/A) to the Annual Report on Form 10-K of Computer Sciences Corporation (the “Company” or “CSC”) for the fiscal year ended March 28, 2014 (the Original Filing) is being filed to reflect the restatement of the Company’s audited financial statements for fiscal year 2012 and summary financial results for fiscal year 2011 and fiscal year 2010 with respect to certain elements of the Company’s historical accounting for its contractual relationship with the U.K. National Health Service (the NHS) in connection with the settlement of a civil investigation by the Securities and Exchange Commission (the SEC), as described below. The restatement has no impact on the Company’s Consolidated Balance Sheets, Statements of Operations, of Comprehensive Income (Loss), of Cash Flows and of Changes in Equity for fiscal years 2013 or 2014 or on its financial statements for the first, second and third quarters of fiscal year 2015. This Form 10-K/A amends and restates Items 1, 3, 6, 7, 8, 9A and 15B of the Original Form 10-K to reflect the effects of the restatements. In addition, in accordance with applicable SEC rules, this 10-K/A also includes certifications from our Chief Executive Officer and Chief Financial Officer dated as of the date of this filing. The remaining Items contained within this Form 10-K/A consist of all other Items originally contained in the Original Filing and are included for the convenience of the reader. The sections of the Original Filing which were not amended are unchanged and continue in full force and effect as originally filed. This Form 10-K/A speaks as of the date of the Original Filing, and has not been updated to reflect events occurring subsequent to the Original Filing date other than those relating to the SEC investigation and the resulting restatement and the adjustments described above.
Entity Common Stock, Shares Outstanding		144,870,144
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 7,615,698,240