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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Oct. 31, 2022
Oct. 31, 2021
Oct. 31, 2022
Oct. 31, 2021
Effective Income Tax Rate Reconciliation, Percent [Abstract]        
Effective tax rate reconciliation (as a percent) 21.00% 20.70% 18.40% 39.10%
Her Majesty's Revenue and Customs (HMRC)        
Effective Income Tax Rate Reconciliation, Percent [Abstract]        
Non-cash deferred tax expense from re-measurement of net deferred tax liabilities       $ 20.7
Minimum | Her Majesty's Revenue and Customs (HMRC)        
Effective Income Tax Rate Reconciliation, Percent [Abstract]        
Foreign statutory tax rate       19.00%
Maximum | Her Majesty's Revenue and Customs (HMRC)        
Effective Income Tax Rate Reconciliation, Percent [Abstract]        
Foreign statutory tax rate       25.00%