Derivative Financial Instruments and Hedging Activities (Gain (Loss) on Derivatives Recognized in Consolidated Statement of Operations) (Details) - USD ($) $ in Millions	12 Months Ended
Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2024
Total amounts presented in the accompanying condensed consolidated statements of operations for line items affected by the net gains (losses) shown above: [Abstract]
Sales	$ 5,082	$ 5,056	$ 5,328
Gain on business divestitures	0	0	267
Other income (expense), net	43	99	(17)
Foreign Currency Denominated Debt [Member]
Foreign currency-denominated debt designated as net investment hedge: [Abstract]
Net gain (loss) recognized in AOCI	(4)	(32)	3
Foreign Currency Denominated Debt [Member] \| Gain on business divestitures
Foreign currency-denominated debt designated as net investment hedge: [Abstract]
Net gain (loss) reclassified from AOCI to earnings	0	0	26
Currency derivatives [Member]
Currency derivatives designated as cash flow hedges: [Abstract]
Net gain (loss) recognized in AOCI	(13)	(9)	11
Currency derivatives [Member] \| Sales [Member]
Currency derivatives designated as cash flow hedges: [Abstract]
Net gain (loss) reclassified from AOCI into earnings	(13)	10	12
Currency derivatives not designated as hedging instruments: [Abstract]
Net gain (loss) recognized in earnings	(5)	2	0
Currency derivatives [Member] \| Other Income (Expense), Net [Member]
Currency derivatives not designated as hedging instruments: [Abstract]
Net gain (loss) recognized in earnings	$ 6	$ (4)	$ 8

Currency derivatives not designated as hedging instruments: [Abstract]

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Total amounts presented in the accompanying condensed consolidated statements of operations for line items affected by the net gains (losses) shown above: [Abstract]

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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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