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Debt - Narrative (Details)
9 Months Ended
Jun. 29, 2022
USD ($)
Mar. 31, 2023
USD ($)
Jun. 30, 2022
USD ($)
Jul. 10, 2019
USD ($)
Debt Instrument [Line Items]        
Debt to consolidated EBITDA ratio   3.50    
Line of credit facility collateral, maximum percentage of ownership interests held in subsidiary   10.00%    
Senior notes, carrying amount   $ 500,000,000 $ 500,000,000  
Outstanding debt   1,585,864,000 775,241,000  
3.24% Senior Notes Due July 10, 2026        
Debt Instrument [Line Items]        
Principal amount       $ 250,000,000
Interest rate       3.24%
3.45% Senior Notes Due July 10, 2029        
Debt Instrument [Line Items]        
Principal amount       $ 250,000,000
Interest rate       3.45%
Senior Notes        
Debt Instrument [Line Items]        
Long-term debt, fair value   471,500,000 477,700,000  
Revolving Credit Agreement, Term Credit Agreement, and Senior Notes        
Debt Instrument [Line Items]        
Outstanding debt   1,590,000,000    
Revolving Credit Facility and Term Credit Agreement        
Debt Instrument [Line Items]        
Long-term debt, fair value   $ 1,090,000,000 $ 280,000,000  
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   5.80%    
Revolving Credit Facility        
Debt Instrument [Line Items]        
Available for draw   $ 605,000,000    
Revolving Credit Facility | Mufg Union Bank Na and Westpac Banking Corporation        
Debt Instrument [Line Items]        
Maximum borrowing capacity $ 1,500,000,000      
Uncommitted option to increase credit facility $ 1,000,000,000      
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 $ 200,000,000      
Term Loan Credit Agreement        
Debt Instrument [Line Items]        
Principal payment $ 5,000,000      
Term Loan Credit Agreement | Minimum | Secured Overnight Financing Rate        
Debt Instrument [Line Items]        
Credit facility interest rate equal to reference rate plus 0.75%      
Term Loan Credit Agreement | Minimum | Base Rate        
Debt Instrument [Line Items]        
Credit facility interest rate equal to reference rate plus 0.00%      
Term Loan Credit Agreement | Maximum | Secured Overnight Financing Rate        
Debt Instrument [Line Items]        
Credit facility interest rate equal to reference rate plus 1.50%      
Term Loan Credit Agreement | Maximum | Base Rate        
Debt Instrument [Line Items]        
Credit facility interest rate equal to reference rate plus 0.50%