Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
Apr. 30, 2022	Apr. 30, 2021
Goodwill [Roll Forward]
Beginning balance	$ 779	$ 756
Sale of business (Note 12)		(4)
Acquisition of business (Note 12)		8
Foreign currency translation adjustment	(18)	19
Impairment	0
Ending balance	761	779
Indefinite-lived Intangible Assets [Roll Forward]
Beginning balance	676	635
Sale of business (Note 12)		(1)
Acquisition of business (Note 12)		8
Foreign currency translation adjustment	(38)	34
Impairment	(52)
Ending balance	$ 586	$ 676

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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