v3.25.1
Schedule II - Valuation and Qualifying Accounts (Details) - USD ($)
$ in Millions
 12 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Apr. 30, 2023
SEC Schedule, 12-09, Allowance, Credit Loss [Member]      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period $ 8 $ 7 $ 13
Additions Charged to Costs and Expenses 2 1 0
Additions Charged to Other Accounts 0 0 0
Deductions 3 [1] 0 6 [1]
Balance at End of Period 7 8 7
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 16 14 27
Additions Charged to Costs and Expenses 7 2 4
Additions Charged to Other Accounts 14 2 0
Deductions 2 2 17
Balance at End of Period $ 35 $ 16 $ 14
[1] Doubtful accounts written off, net of recoveries.