v3.26.1
The Company and a Summary of Its Significant Accounting Policies - Additional Information (Detail 7) - USD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Company And Summary Of Significant Accounting Policies [Line Items]      
Capitalized contract cost amortization and reduction of carrying value associated with contract termination $ 23.7 $ 33.1 $ 40.4
Advertising costs 20.7 19.2 $ 26.4
Prepaid Expenses and Other Current Assets [Member]      
Company And Summary Of Significant Accounting Policies [Line Items]      
Deferred customer contract costs 25.0 15.2  
Other Noncurrent Assets [Member]      
Company And Summary Of Significant Accounting Policies [Line Items]      
Deferred customer contract costs 56.1 54.2  
Deferred Customer Contract Acquisition Cost [Member]      
Company And Summary Of Significant Accounting Policies [Line Items]      
Deferred customer contract costs 8.2 13.0  
Deferred Customer Contract Fulfillment Cost [Member]      
Company And Summary Of Significant Accounting Policies [Line Items]      
Deferred customer contract costs $ 72.9 $ 56.4