Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Jul. 31, 2020

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 three months ended July 31, 2020:

(Dollars in millions)	Goodwill			Other Intangible Assets
Balance at April 30, 2020	$	756		$	635
Sale of business (Note 14)	(4		)	(1		)
Foreign currency translation adjustment	8			23
Balance at July 31, 2020	$	760		$	657