Fair Value Measurements - Schedule of Estimated Fair Values of the Other Financial Instruments (Details) - USD ($) $ in Millions	Jul. 31, 2026	Apr. 30, 2026
Carrying Amount \| Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration	$ 27	$ 27
Carrying Amount \| Senior Notes \| Level 2
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Senior notes	7,343	6,162
Fair Value \| Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration	27	27
Fair Value \| Senior Notes \| Level 2
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Senior notes	$ 7,280	$ 6,165

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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+ Details