Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Jan. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill [Table Text Block]

The following table summarizes the changes in goodwill and other intangible assets during the nine months ended January 31, 2018:

(Dollars in millions)	Goodwill		Other Intangible Assets
Balance at April 30, 2017	$	753	$	641
Foreign currency translation adjustment	15		39
Balance at January 31, 2018	$	768	$	680