v3.22.4
Net Sales (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Mar. 31, 2022
Disaggregation of Revenue [Line Items]          
Total net sales $ 2,169.2 $ 1,757.5 $ 6,206.0 $ 4,976.7  
Semiconductor products          
Disaggregation of Revenue [Line Items]          
Total net sales 2,124.8 1,725.5 6,078.7 4,884.5  
Deferred revenue 673.3   673.3   $ 117.6
Deferred revenue, to be recognized within next 12 months $ 87.6   $ 87.6    
Semiconductor products | Contract with customer, initial duration, long term          
Disaggregation of Revenue [Line Items]          
Revenue, remaining performance obligation, percentage of net sales 80.00%   80.00%    
Semiconductor products | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Contract with customer, initial duration, long term          
Disaggregation of Revenue [Line Items]          
Revenue, remaining performance obligation, percentage 80.00%   80.00%    
Revenue, remaining performance obligation, expected timing of satisfaction, period 12 months   12 months    
Semiconductor products | Accrued liabilities          
Disaggregation of Revenue [Line Items]          
Deferred revenue $ 111.2   $ 111.2   $ 73.2
Distributors          
Disaggregation of Revenue [Line Items]          
Total net sales 1,032.3 787.1 2,903.7 2,387.2  
Direct customers          
Disaggregation of Revenue [Line Items]          
Total net sales 1,092.5 938.4 3,175.0 2,497.3  
Licensees          
Disaggregation of Revenue [Line Items]          
Total net sales 44.4 32.0 127.3 92.2  
Microcontrollers          
Disaggregation of Revenue [Line Items]          
Total net sales 1,221.3 972.2 3,463.8 2,768.7  
Analog          
Disaggregation of Revenue [Line Items]          
Total net sales 606.5 500.5 1,759.0 1,423.5  
Other          
Disaggregation of Revenue [Line Items]          
Total net sales 341.4 $ 284.8 983.2 $ 784.5  
Long Term Supply Arrangement | Semiconductor products          
Disaggregation of Revenue [Line Items]          
Deferred revenue 585.7   585.7    
Remaining performance obligation $ 4,000.0   $ 4,000.0    
Long Term Supply Arrangement | Semiconductor products | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01          
Disaggregation of Revenue [Line Items]          
Revenue, remaining performance obligation, percentage 10.00%   10.00%    
Revenue, remaining performance obligation, expected timing of satisfaction, period 12 months   12 months    
Long Term Supply Arrangement | Semiconductor products | Accrued liabilities          
Disaggregation of Revenue [Line Items]          
Deferred revenue $ 27.7   $ 27.7    
Long Term Supply Arrangement | Semiconductor products | Other noncurrent liabilities          
Disaggregation of Revenue [Line Items]          
Deferred revenue 558.0   558.0    
Other Arrangement | Semiconductor products          
Disaggregation of Revenue [Line Items]          
Deferred revenue $ 87.6   $ 87.6