Uncommitted option to increase credit facility

No definition available.

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Namespace Prefix:	rmd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870

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

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	na
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

Name:	us-gaap_DebtInstrumentLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

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

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

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

- Definition

Amount of the required periodic payment applied to principal.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16(a))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-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

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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Data Type:	na
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- Details

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- Details

Name:	us-gaap_CreditFacilityAxis=rmd_TermLoanCreditAgreementMember
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- Details

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- Details

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Debt (Narrative) (Details) - USD ($) $ in Thousands			12 Months Ended
Debt (Narrative) (Details) - USD ($) $ in Thousands	Nov. 05, 2018	Apr. 17, 2018	Jun. 30, 2019	Jul. 10, 2019	Jun. 30, 2018
Debt Instrument [Line Items]
Outstanding under the revolving credit facility and term credit facility			$ 1,270,853		$ 281,454
MUFG Union Bank [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,600,000	$ 800,000
Uncommitted option to increase credit facility	$ 300,000	300,000
MUFG Union Bank [Member] \| ResMed Limited [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 200,000
MUFG Union Bank, N.A. and Westpac Banking Corporation [Member] \| Revolving Credit Facility And Term Credit Agreement [Member]
Debt Instrument [Line Items]
Interest rate on outstanding principal amount			3.40%
Outstanding under the revolving credit facility and term credit facility			$ 1,274,000
MUFG Union Bank, N.A. and Westpac Banking Corporation [Member] \| ResMed Limited [Member] \| Term Credit Agreement [Member]
Debt Instrument [Line Items]
Principal payment			$ 6,000
Minimum [Member] \| MUFG Union Bank, N.A. and Westpac Banking Corporation [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Commitment fees percentage rate on unused portion of credit facility			0.10%
Minimum [Member] \| MUFG Union Bank, N.A. and Westpac Banking Corporation [Member] \| ResMed Limited [Member] \| Term Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Credit facility interest rate equal to reference rate plus			0.75%
Minimum [Member] \| MUFG Union Bank, N.A. and Westpac Banking Corporation [Member] \| ResMed Limited [Member] \| Term Credit Agreement [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Credit facility interest rate equal to reference rate plus			0.00%
Maximum [Member] \| MUFG Union Bank, N.A. and Westpac Banking Corporation [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Commitment fees percentage rate on unused portion of credit facility			0.175%
Maximum [Member] \| MUFG Union Bank, N.A. and Westpac Banking Corporation [Member] \| ResMed Limited [Member] \| Term Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Credit facility interest rate equal to reference rate plus			1.50%
Maximum [Member] \| MUFG Union Bank, N.A. and Westpac Banking Corporation [Member] \| ResMed Limited [Member] \| Term Credit Agreement [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Credit facility interest rate equal to reference rate plus			0.50%
Subsequent Event [Member]
Debt Instrument [Line Items]
Senior Notes				$ 500,000