Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Jul. 31, 2023	Jul. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 231	$ 249
Other comprehensive income (loss), net of tax:
Currency translation adjustments	39	(5)
Cash flow hedge adjustments	(5)	4
Postretirement benefits adjustments	2	2
Net other comprehensive income (loss)	36	1
Comprehensive income	$ 267	$ 250