Name:	us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_NotesReceivableNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Accounts receivable from variable interest entity.

No definition available.

Name:	var_AccountsReceivableFromVariableInterestEntity
Namespace Prefix:	var_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Financing Receivable, Accrued Interest

No definition available.

Name:	var_FinancingReceivableAccruedInterest
Namespace Prefix:	var_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Financing Receivable, Maximum Lending Commitment

No definition available.

Name:	var_FinancingReceivableMaximumLendingCommitment
Namespace Prefix:	var_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Financing Receivable, Number of Annual Payments

No definition available.

Name:	var_FinancingReceivableNumberofAnnualPayments
Namespace Prefix:	var_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Financing Receivable, Outstanding Commitment, Installment Payment, Amount

No definition available.

Name:	var_FinancingReceivableOutstandingCommitmentInstallmentPaymentAmount
Namespace Prefix:	var_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Financing Receivable, Outstanding Commitment, Number of Installment Payments

No definition available.

Name:	var_FinancingReceivableOutstandingCommitmentNumberofInstallmentPayments
Namespace Prefix:	var_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Financing Receivable, Stated Rate

No definition available.

Name:	var_FinancingReceivableStatedRate
Namespace Prefix:	var_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Name:	us-gaap_CounterpartyNameAxis=var_MarylandProtonTherapyCenterMPTCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_NotesReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_LoansReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: