Debt Instrument, Aggregate Borrowings Availability

No definition available.

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Period Type:	instant

- Definition

Debt instrument, aggregate increase amount, maximum secured leverage ratio.

+ References

No definition available.

+ Details

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- Definition

Debt instrument, amount issued at discount, discount percentage.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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Period Type:	instant

- Definition

Debt instrument, amount issued at discount, percent of par.

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Face Amount, Discounted from Par

+ References

No definition available.

+ Details

Name:	brks_DebtInstrumentFaceAmountDiscountedFromPar
Namespace Prefix:	brks_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscount
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12355-112629

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-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

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- Details

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- Details

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- Details

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Debt - General Information (Details) - USD ($) $ in Thousands		9 Months Ended
	Feb. 15, 2019	Jun. 30, 2019	Nov. 15, 2018	Oct. 04, 2017
Debt Instrument [Line Items]
Loss on extinguishment of debt		$ 9,051
Issue amount	$ 345,200
Senior Secured Term Loan Facility \| Secured Debt
Debt Instrument [Line Items]
Face amount				$ 200,000
Issue amount				$ 197,600
Percentage of par (as a percent)				98.80%
Discount				$ 2,400
Discount percentage (as a percent)				1.20%
Aggregate increase amount				$ 75,000
Maximum secured leverage ratio				3.00
Senior Secured Incremental Term Loan Facility \| Secured Debt
Debt Instrument [Line Items]
Debt extinguished	340,100
Loss on extinguishment of debt	9,100
Face amount	$ 349,100		$ 350,000
Issue amount			$ 340,500
Percentage of par (as a percent)	98.90%		97.30%
Discount	$ 4,000		$ 9,500
Discount percentage (as a percent)			2.70%