Goodwill and Other Intangible Assets (Details) $ in Millions	9 Months Ended
	Jan. 31, 2024 USD ($)
Goodwill [Roll Forward]
Balance at April 30, 2023	$ 1,457
Purchase accounting adjustment (Note 14)	40
Sale of business (Note 15)	(10)
Reclassification to assets held for sale (Note 16)	(18)
Foreign currency translation adjustment	(5)
Balance at January 31, 2024	1,464
Indefinite-lived Intangible Assets [Roll Forward]
Balance at April 30, 2023	1,164
Purchase accounting adjustment (Note 14)	(53)
Sale of business (Note 15)	(89)
Reclassification to assets held for sale (Note 16)	0
Foreign currency translation adjustment	(18)
Balance at January 31, 2024	$ 1,004