Supplemental Financial Information (Schedule Of Accumulated Other Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Mar. 29, 2013	Mar. 30, 2012	Apr. 02, 2010
Supplemental Financial Information [Abstract]
Foreign currency translation adjustments, net of taxes	$ 181	$ 174
Unrealized gain on available-for-sale securities, net of taxes	16	1
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total	197	175
Less: Accumulated other comprehensive income attributable to noncontrolling interest		2
Accumulated other comprehensive income attributable to Symantec Corporation	197	173
Foreign currency translation adjustments, tax	(6)	16
Unrealized gain (loss) on available-for-sale securities, tax	$ 11	$ 0	$ 0

Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period.

+ References+ Details

Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

+ References

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-Name Statement of Financial Accounting Standard (FAS)

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+ Details

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References

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

-Publisher FASB

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-Paragraph 14, 17, 26

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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-Name Regulation S-X (SX)

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-Section 02

-Paragraph 31

-Article 5

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-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 10

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-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

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+ Details

- Definition

Tax effect, net of reclassification adjustments, of the change in the balance sheet adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency of the reporting entity. Also includes the following: gain (loss) on foreign currency forward exchange contracts; foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; and gain (loss) on a derivative instrument or nonderivative financial instrument that may give rise to a foreign currency transaction gain (loss) that has been designated and qualified as a hedging instrument for hedging of the foreign currency exposure of a net investment in a foreign operation.

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- Definition

Tax effect of unrealized holding gain (loss) before reclassification adjustments and transfers on available-for-sale securities.

+ References+ Details