Debt - Narrative (Details) $ in Thousands		9 Months Ended
	Jun. 29, 2022 USD ($)	Mar. 31, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jul. 10, 2019 USD ($)
Debt Instrument [Line Items]
Debt to consolidated EBITDA ratio		3.50
Line of credit facility, collateral, percentage of the company		10.00%
Outstanding debt		$ 673,032	$ 707,213
3.24% Senior Notes Due July 10, 2026
Debt Instrument [Line Items]
Principal amount				$ 250,000
Interest rate				3.24%
3.45% Senior Notes Due July 10, 2029
Debt Instrument [Line Items]
Principal amount				$ 250,000
Interest rate				3.45%
Senior Notes
Debt Instrument [Line Items]
Long-term debt, fair value		481,500	463,000
Senior notes, carrying amount		500,000	500,000
Revolving Credit Agreement, Term Credit Agreement, and Senior Notes
Debt Instrument [Line Items]
Outstanding debt		$ 675,000
Revolving Credit Facility | Mufg Union Bank Na and Westpac Banking Corporation
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,500,000
Uncommitted option to increase credit facility	$ 1,000,000
EBITDA multiple of trailing twelve-month measurement period	1.0
Revolving Credit Facility | Mufg Union Bank Na and Westpac Banking Corporation | Minimum
Debt Instrument [Line Items]
Commitment fees percentage rate on unused portion of credit facility		0.075%
Revolving Credit Facility | Mufg Union Bank Na and Westpac Banking Corporation | Maximum
Debt Instrument [Line Items]
Commitment fees percentage rate on unused portion of credit facility		0.15%
Revolving Credit Facility | Mufg Union Bank | ResMed Limited
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 200,000
Term Loan Credit Agreement
Debt Instrument [Line Items]
Principal payment	$ 5,000
Term Loan Credit Agreement | Minimum | Secured Overnight Financing Rate
Debt Instrument [Line Items]
Credit facility interest rate, basis spread on reference rate	0.75%
Term Loan Credit Agreement | Minimum | Base Rate
Debt Instrument [Line Items]
Credit facility interest rate, basis spread on reference rate	0.00%
Term Loan Credit Agreement | Maximum | Secured Overnight Financing Rate
Debt Instrument [Line Items]
Credit facility interest rate, basis spread on reference rate	1.50%
Term Loan Credit Agreement | Maximum | Base Rate
Debt Instrument [Line Items]
Credit facility interest rate, basis spread on reference rate	0.50%
Revolving Credit Facility and Term Credit Agreement
Debt Instrument [Line Items]
Available for draw		$ 1,500,000
Long-term debt, fair value		$ 175,000	$ 210,000
Revolving Credit Facility and Term Credit Agreement | Mufg Union Bank Na and Westpac Banking Corporation
Debt Instrument [Line Items]
Interest rate on outstanding principal amount		5.10%