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Financial Instruments - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Mar. 31, 2024
Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]        
Impaired loan receivable $ 19.0   $ 19.0  
Level 3        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Convertible loans receivable 33.0   32.0  
Convertible loans receivable | Level 3        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Fair value losses recognized in the Condensed Consolidated Income Statements 1.0 $ 0.0    
Loans receivable        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Loans and other receivables carried at amortized cost 26.0   26.0  
Arduino        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Impaired loan receivable $ 16.3   $ 16.2  
Cerfe Labs, Inc. | Loans receivable        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Loan term 4 years   4 years  
Loans and other receivables carried at amortized cost $ 3.2   $ 3.1  
Allia Limited | Loans receivable        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Loan term 5 years   5 years  
Loans and other receivables carried at amortized cost $ 7.0   $ 6.9  
Ampere        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Convertible loans receivable       $ 29.0
Ampere | Convertible loans receivable | Level 3        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Fair value losses recognized in the Condensed Consolidated Income Statements $ 1.0 $ 0.4