Other Non-Current Assets - Schedule of Other Non-Current Assets (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Jun. 30, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred client conversion and start-up costs	$ 135.6us-gaap_DeferredSetUpCostsNoncurrent	$ 135.5us-gaap_DeferredSetUpCostsNoncurrent
Deferred data center costs	44.2br_DeferredDataCenterCosts	44.9br_DeferredDataCenterCosts
Long-term investments	29.8us-gaap_LongTermInvestments	25.3us-gaap_LongTermInvestments
Long-term broker fees	6.1us-gaap_MembershipsInExchangesOwned	8.7us-gaap_MembershipsInExchangesOwned
Other	26.0	22.7
Total	$ 241.7us-gaap_OtherAssetsNoncurrent	$ 237.1us-gaap_OtherAssetsNoncurrent

Deferred Data Center Costs

No definition available.

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- Details

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- Definition

Deferred incremental direct costs incurred typically at a contract's inception so that the company may be in a position to fulfill all contractual obligations of an arrangement. The costs are directly related to specified activities under the arrangement and are deferred in order to match revenue that will be recognized after one year from the balance sheet date (or one operating cycle if longer). Excludes start-up costs (such as one-time activities related to opening a new facility, introducing a new product or service, establishing business with a new class of customers, preopening costs, and organization costs), which are expensed as incurred.

+ 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 210.5-02.17)

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

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 13

-Section A

-Paragraph f

-Subparagraph Question 3, 4

-Subsection 3

+ Details

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- Definition

The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

+ References

+ Details

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- Definition

Carrying amount as of the balance sheet date of the capitalized costs of obtaining memberships that provide the entity, typically a broker-dealer, with the right to do business on trading exchanges (such as stock or commodity exchanges) in which the entity or its employees are members. Memberships are usually registered in the names of individuals who are affiliated with the broker-dealer. A membership held in the name of an individual is considered to be an asset of the broker-dealer if it is held by the broker-dealer under an agreement (such as an ABC agreement) that would require the member, upon leaving the broker-dealer, to do one of the following: a) Pay the member organization the amount necessary to purchase another membership (if the named individual wished to retain the membership); b) Sell the membership and pay the proceeds over to the member organization; or, c) Transfer the membership for a nominal consideration to a person designated by the member organization and satisfactory to the exchange.

+ References

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

-Publisher SEC

-Name Rule 15c3

-Number 240

-Section 3

-Subparagraph i

-Article 15c3

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- Definition

Amount of other miscellaneous assets expected to be realized or consumed after one year or normal operating cycle, if longer.

+ References

No definition available.

+ Details

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- Definition

Aggregate carrying amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer).

+ 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 210.5-02.17)

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 17

-Article 5

+ Details

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