v3.26.1
Net Sales (Details) - USD ($)
$ in Millions
 3 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2026
Disaggregation of Revenue [Line Items]      
Total net sales $ 1,484.7 $ 1,075.5  
Semiconductor products      
Disaggregation of Revenue [Line Items]      
Total net sales 1,442.1 1,042.5  
Deferred revenue 431.0   $ 461.2
Deferred revenue, to be recognized within next 12 months 174.2   179.2
Deferred revenue, non current 256.8   $ 282.0
Deferred revenue recognized 64.3 62.6  
Distributors      
Disaggregation of Revenue [Line Items]      
Total net sales 772.8 507.0  
Direct customers      
Disaggregation of Revenue [Line Items]      
Total net sales 669.3 535.5  
Licensees      
Disaggregation of Revenue [Line Items]      
Total net sales 42.6 33.0  
Mixed-signal Microcontrollers      
Disaggregation of Revenue [Line Items]      
Total net sales 739.1 532.6  
Analog      
Disaggregation of Revenue [Line Items]      
Total net sales 410.9 316.2  
Other      
Disaggregation of Revenue [Line Items]      
Total net sales 334.7 $ 226.7  
Long Term Supply Arrangement | Semiconductor products      
Disaggregation of Revenue [Line Items]      
Deferred revenue 333.9    
Deferred revenue, to be recognized within next 12 months 100.4    
Deferred revenue, non current $ 233.5    
Long Term Supply Arrangement | Semiconductor products | Minimum      
Disaggregation of Revenue [Line Items]      
Contract liability period 3 years    
Long Term Supply Arrangement | Semiconductor products | Maximum      
Disaggregation of Revenue [Line Items]      
Contract liability period 5 years    
Other Arrangement | Semiconductor products      
Disaggregation of Revenue [Line Items]      
Deferred revenue $ 97.1