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Revenue - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Disaggregation of Revenue [Line Items]      
Increase in contract with customer, asset $ 1,436.2 $ 1,121.7  
Contract assets, transfer to accounts receivable 1,127.3 709.8  
Performance obligation satisfied in previous period $ 2,616.9 $ 2,179.4 $ 1,866.6
Four Customers | Revenue from Contract with Customer Benchmark | Customer Concentration Risk      
Disaggregation of Revenue [Line Items]      
Concentration risk   49.00%  
Largest Customer | Revenue from Contract with Customer Benchmark | Customer Concentration Risk      
Disaggregation of Revenue [Line Items]      
Concentration risk 16.00% 17.00% 21.00%
Largest Customer | Accounts Receivable | Customer Concentration Risk      
Disaggregation of Revenue [Line Items]      
Concentration risk 22.00% 26.00%  
Second Largest Customer | Revenue from Contract with Customer Benchmark | Customer Concentration Risk      
Disaggregation of Revenue [Line Items]      
Concentration risk 14.00% 11.00% 11.00%
Second Largest Customer | Accounts Receivable | Customer Concentration Risk      
Disaggregation of Revenue [Line Items]      
Concentration risk 12.00% 19.00%  
Third Largest Customer | Revenue from Contract with Customer Benchmark | Customer Concentration Risk      
Disaggregation of Revenue [Line Items]      
Concentration risk 12.00% 11.00% 10.00%
Third Largest Customer | Accounts Receivable | Customer Concentration Risk      
Disaggregation of Revenue [Line Items]      
Concentration risk 11.00% 12.00%  
Fourth Largest Customer | Revenue from Contract with Customer Benchmark | Customer Concentration Risk      
Disaggregation of Revenue [Line Items]      
Concentration risk   10.00%  
Fourth Largest Customer | Accounts Receivable | Customer Concentration Risk      
Disaggregation of Revenue [Line Items]      
Concentration risk 10.00%    
Three Largest Customers | Revenue from Contract with Customer Benchmark | Customer Concentration Risk      
Disaggregation of Revenue [Line Items]      
Concentration risk 42.00%   42.00%