XML 24 R43.htm IDEA: XBRL DOCUMENT v2.4.1.9

Acquisition - Additional Information (Detail) (Crescendo Biosciences, Inc., USD $)	0 Months Ended
	Feb. 28, 2014
Business Acquisition [Line Items]
Total consideration transferred	$ 258,950,000us-gaap_BusinessCombinationConsiderationTransferred1
Business acquisition, cash transferred	225,100,000us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Elimination of intercompany balances related to accrued interest and term loan	25,900,000mygn_BusinessCombinationConsiderationTransferredEliminationOfIntercompanyBalancesRelatedToAccruedInterestAndTermLoan
Fair value of purchase option granted	8,000,000mygn_BusinessCombinationConsiderationTransferredFairValuePurchaseOption
Business acquisition, amount deposited into escrow account	20,000,000mygn_BusinessAcquisitionConsiderationCashDepositedEscrowAccount
Share-based compensation to Crescendo employees	6,929,000mygn_BusinessCombinationConsiderationTransferredSharebasedCompensation
Control bonuses paid to Crescendo employees	$ 5,695,000mygn_BusinessCombinationConsiderationTransferredChangeOfControlPayments
Minimum
Business Acquisition [Line Items]
Period of audit completion	12 months
Maximum
Business Acquisition [Line Items]
Period of audit completion	15 months

X

- Definition

Business Acquisition Consideration Cash Deposited Escrow Account

+ References

No definition available.

+ Details

Name:	mygn_BusinessAcquisitionConsiderationCashDepositedEscrowAccount
Namespace Prefix:	mygn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Business Combination, Consideration Transferred, Change of Control Payments

+ References

No definition available.

+ Details

Name:	mygn_BusinessCombinationConsiderationTransferredChangeOfControlPayments
Namespace Prefix:	mygn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Business Combination, Consideration Transferred, Elimination of Intercompany Balances Related to Accrued Interest and Term Loan

+ References

No definition available.

+ Details

Name:	mygn_BusinessCombinationConsiderationTransferredEliminationOfIntercompanyBalancesRelatedToAccruedInterestAndTermLoan
Namespace Prefix:	mygn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Business Combination, Consideration Transferred, Fair Value Purchase Option

+ References

No definition available.

+ Details

Name:	mygn_BusinessCombinationConsiderationTransferredFairValuePurchaseOption
Namespace Prefix:	mygn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Business Combination, Consideration Transferred, Share-Based Compensation

+ References

No definition available.

+ Details

Name:	mygn_BusinessCombinationConsiderationTransferredSharebasedCompensation
Namespace Prefix:	mygn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Period For Annual Audited Financial Report

+ References

No definition available.

+ Details

Name:	mygn_PeriodForAnnualAuditedFinancialReport
Namespace Prefix:	mygn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

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

X

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration