Line Of Credit Facility Covenant Compliance [Line Items]

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: 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(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebtCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebtNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

Name:	us-gaap_DebtInstrumentAxis=br_TwoThousandFourteenSeniorNotesMember
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- Details

Name:	us-gaap_DebtInstrumentAxis=br_Fiscal2016SeniorNotesMember
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Balance Type:
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- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
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Balance Type:
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- Details

Name:	us-gaap_DebtInstrumentAxis=br_Fiscal2015RevolvingCreditFacilityMember
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- Details

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- Details

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Borrowings - Outstanding Borrowings (Detail) - USD ($)	Jun. 30, 2016	Jun. 30, 2015	Aug. 31, 2013
Line Of Credit Facility Covenant Compliance [Line Items]
Current portion of long-term debt	$ 124,900,000	$ 0
Par Value	1,025,000,000
Long-term debt, excluding current portion	897,600,000	689,400,000
Total debt	1,022,500,000	689,400,000
Unused Available Capacity	750,000,000
Fair Value at June 30, 2016	1,064,600,000
Senior Notes [Member] \| 2007 Senior Notes [Member]
Line Of Credit Facility Covenant Compliance [Line Items]
Current portion of long-term debt	124,900,000	0
Long-term debt, excluding current portion	0	124,800,000
Senior Notes [Member] \| 2014 Senior Notes [Member]
Line Of Credit Facility Covenant Compliance [Line Items]
Par Value			$ 400,000,000.0
Long-term debt, excluding current portion	399,700,000	399,600,000
Senior Notes [Member] \| 2016 Senior Notes [Member]
Line Of Credit Facility Covenant Compliance [Line Items]
Par Value	500,000,000
Long-term debt, excluding current portion	497,900,000	0
Revolving Credit Facility [Member] \| Fiscal 2015 Revolving Credit Facility [Member]
Line Of Credit Facility Covenant Compliance [Line Items]
Long-term debt, excluding current portion	0	$ 165,000,000
Unused Available Capacity	750,000,000
Current portion of long-term debt
Line Of Credit Facility Covenant Compliance [Line Items]
Par Value	125,000,000
Fair Value at June 30, 2016	129,100,000
Current portion of long-term debt \| Senior Notes [Member] \| 2007 Senior Notes [Member]
Line Of Credit Facility Covenant Compliance [Line Items]
Par Value	125,000,000.0
Fair Value at June 30, 2016	129,100,000
Long-term debt, excluding current portion
Line Of Credit Facility Covenant Compliance [Line Items]
Par Value	900,000,000
Fair Value at June 30, 2016	935,500,000
Long-term debt, excluding current portion \| Senior Notes [Member] \| 2007 Senior Notes [Member]
Line Of Credit Facility Covenant Compliance [Line Items]
Par Value	0
Fair Value at June 30, 2016	0
Long-term debt, excluding current portion \| Senior Notes [Member] \| 2014 Senior Notes [Member]
Line Of Credit Facility Covenant Compliance [Line Items]
Par Value	400,000,000.0
Fair Value at June 30, 2016	427,600,000
Long-term debt, excluding current portion \| Senior Notes [Member] \| 2016 Senior Notes [Member]
Line Of Credit Facility Covenant Compliance [Line Items]
Par Value	500,000,000.0
Fair Value at June 30, 2016	507,900,000
Long-term debt, excluding current portion \| Revolving Credit Facility [Member] \| Fiscal 2015 Revolving Credit Facility [Member]
Line Of Credit Facility Covenant Compliance [Line Items]
Par Value	0
Fair Value at June 30, 2016	$ 0