Stock Repurchases (Schedule Of Stock Repurchases) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Sep. 28, 2012	Sep. 28, 2012
Stock Repurchases [Abstract]
Total number of shares repurchased attributable to Symantec Corporation	12	31
Dollar amount of shares repurchased attributable to Symantec Corporation	$ 200	$ 501
Average price paid per share	$ 16.48	$ 15.93
Range of price paid per share, minimum	$ 13.09	$ 13.09
Range of price paid per share, maximum	$ 19.56	$ 19.56

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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

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