Fair Value Measurements (Reconciliation For Fair Value Measurements Using Significant Unobservable Inputs) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jun. 30, 2013
Fair Value Measurements [Abstract]
Balance at the beginning of the period	$ (5,024)
Acquisition date fair value of contingent consideration	(12,150)
Changes in fair value included in operating income	1,827
Payments	7,790
Foreign currency translation adjustments	(222)
Balance at the end of the period	$ (7,779)

Contingent Consideration, Fair Value at Acquisition

No definition available.

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- Definition

Contingent Consideration, Foreign Currency Translation Adjustments

+ References

No definition available.

+ Details

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- Definition

Business Acquisition, Contingent Consideration, at Fair Value, Paid During The Period

+ References

No definition available.

+ Details

Name:	rmd_ContingentConsiderationPayments
Namespace Prefix:	rmd_
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- Details

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- Definition

Amount of gain (loss) recognized in earnings, arising from liabilities measured at fair value on a recurring basis using unobservable inputs (level 3).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-Subparagraph c(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

This element represents a liability measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

+ References

+ Details

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