Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 1,024	$ 783	$ 838
Other comprehensive income (loss), net of tax:
Currency translation adjustments	(7)	135	(60)
Cash flow hedge adjustments	0	(27)	53
Postretirement benefits adjustments	21	9	77
Net other comprehensive income (loss)	14	117	70
Comprehensive income	$ 1,038	$ 900	$ 908