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Leases Future Operating Lease Payments (Details) - USD ($)
$ in Millions
Apr. 30, 2023
Apr. 30, 2022
Leases [Abstract]    
2024 $ 24  
2025 19  
2026 15  
2027 13  
2028 9  
Thereafter 12  
Total lease payments 92  
Less: Present value discount (7)  
Lease liabilities $ 85 $ 75