Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Oct. 31, 2017

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 six months ended October 31, 2017:

(Dollars in millions)	Goodwill		Other Intangible Assets
Balance at April 30, 2017	$	753	$	641
Foreign currency translation adjustment	3		18
Balance at October 31, 2017	$	756	$	659