v3.26.1
Schedule II - Valuation and Qualifying Accounts (Details) - USD ($)
$ in Millions
 12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2024
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 $ 7 $ 8 $ 7
Additions Charged to Costs and Expenses 1 2 1
Additions Charged to Other Accounts 0 0 0
Deductions 2 [1] 3 0 [1]
Balance at End of Period 6 7 8
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 35 16 14
Additions Charged to Costs and Expenses 5 7 2
Additions Charged to Other Accounts 9 14 2
Deductions 11 2 2
Balance at End of Period $ 38 $ 35 $ 16
[1] Doubtful accounts written off, net of recoveries.