Unrecognized cost of unvested share-based compensation awards.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

+ Details

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- Details

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- Definition

The Maximum payout for each performance unit that could be issued.

+ References

No definition available.

+ Details

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Namespace Prefix:	var_
Data Type:	xbrli:sharesItemType
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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Counted Against Available-For-Grant Limit for Every One Share Awarded

+ References

No definition available.

+ Details

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Data Type:	xbrli:sharesItemType
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Employee Stock Plans - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified			6 Months Ended
	Mar. 28, 2014	Feb. 29, 2012	Mar. 28, 2014 Stock options	Mar. 28, 2014 Restricted stocks, restricted stock units, deferred stock units and performance units	Mar. 28, 2014 Third Amended and Restated 2005 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares counted against the available for grant		2.5			2.6
Maximum payout of shares that could be issued for each performance unit granted	1.5
Unrecognized compensation expense related to outstanding stock awards			$ 16.7	$ 55.6
Weighted average period unrecognized compensation expense is expected to be recognized, years			1 year 10 months 24 days	2 years