Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Jan. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill [Table Text Block]

The following table shows the changes in goodwill (which includes no accumulated impairment losses) and other intangible assets during the nine months ended January 31, 2021:

(Dollars in millions)	Goodwill		Other Intangible Assets
Balance at April 30, 2020	$	756	$	635
Sale of business (Note 14)	(4)		(1)
Acquisition (Note 14)	6		8
Foreign currency translation adjustment	16		34
Balance at January 31, 2021	$	774	$	676