v3.26.1
Financing (2025 Debt Issuances) (Details) - Senior notes
€ in Millions, SFr in Millions
Jun. 03, 2026
CHF (SFr)
Apr. 23, 2026
EUR (€)
Jun. 26, 2026
EUR (€)
Jun. 26, 2026
CHF (SFr)
Dec. 31, 2025
EUR (€)
Dec. 31, 2025
CHF (SFr)
2028 Floating Rate Notes            
Debt Instrument [Line Items]            
Aggregate principal amount | €   € 500 € 500   € 500  
Issue Price (as % of Principal Amount)   100.00%        
2030 Euronotes II            
Debt Instrument [Line Items]            
Aggregate principal amount | €   € 750 € 750   € 750  
Stated Annual Interest Rate   3.25% 3.25% 3.25% 3.25% 3.25%
Issue Price (as % of Principal Amount)   99.934%        
2034 Euronotes            
Debt Instrument [Line Items]            
Aggregate principal amount | €   € 750 € 750   € 750  
Stated Annual Interest Rate   3.625% 3.625% 3.625% 3.625% 3.625%
Issue Price (as % of Principal Amount)   99.918%        
2038 Euronotes            
Debt Instrument [Line Items]            
Aggregate principal amount | €   € 1,000 € 1,000   € 1,000  
Stated Annual Interest Rate   4.00% 4.00% 4.00% 4.00% 4.00%
Issue Price (as % of Principal Amount)   99.953%        
Total Masimo Financing Euronotes            
Debt Instrument [Line Items]            
Aggregate principal amount | €   € 3,000        
2031 CHF Notes            
Debt Instrument [Line Items]            
Aggregate principal amount SFr 120     SFr 120   SFr 120
Stated Annual Interest Rate 1.65%   1.65% 1.65% 1.65% 1.65%
Issue Price (as % of Principal Amount) 100.00%          
2033 CHF Notes II            
Debt Instrument [Line Items]            
Aggregate principal amount SFr 137     SFr 137   SFr 137
Stated Annual Interest Rate 1.88%   1.88% 1.88% 1.88% 1.88%
Issue Price (as % of Principal Amount) 100.00%          
2036 CHF Notes            
Debt Instrument [Line Items]            
Aggregate principal amount SFr 221     SFr 221   SFr 221
Stated Annual Interest Rate 2.10%   2.10% 2.10% 2.10% 2.10%
Issue Price (as % of Principal Amount) 100.00%          
2038 CHF Notes            
Debt Instrument [Line Items]            
Aggregate principal amount SFr 373     SFr 373   SFr 373
Stated Annual Interest Rate 2.25%   2.25% 2.25% 2.25% 2.25%
Issue Price (as % of Principal Amount) 100.00%          
2041 CHF Notes            
Debt Instrument [Line Items]            
Aggregate principal amount SFr 648     SFr 648   SFr 648
Stated Annual Interest Rate 2.38%   2.38% 2.38% 2.38% 2.38%
Issue Price (as % of Principal Amount) 100.00%          
2046 CHF Notes            
Debt Instrument [Line Items]            
Aggregate principal amount SFr 502     SFr 502   SFr 502
Stated Annual Interest Rate 2.51%   2.51% 2.51% 2.51% 2.51%
Issue Price (as % of Principal Amount) 100.00%          
2056 CHF Notes            
Debt Instrument [Line Items]            
Aggregate principal amount SFr 382     SFr 382   SFr 382
Stated Annual Interest Rate 2.50%   2.50% 2.50% 2.50% 2.50%
Issue Price (as % of Principal Amount) 100.00%          
Total Masimo Financing CHF Notes            
Debt Instrument [Line Items]            
Aggregate principal amount SFr 2,383